feat: 重建 Bell 规则与预警链路 (#132)

Implements #131; merge into dev for user acceptance.

Bell/scripts/test-event-synthetic.ps1

@@ -0,0 +1,190 @@
+[CmdletBinding()]
+param(
+    [string]$PostgresBin = 'D:\pgsql17\bin'
+)
+
+Set-StrictMode -Version 3.0
+$ErrorActionPreference = 'Stop'
+$server = $null
+$pgStarted = $false
+$testRoot = Join-Path ([IO.Path]::GetTempPath()) ('yovision-bell-131-' + [guid]::NewGuid().ToString('N'))
+$pgData = Join-Path $testRoot 'postgres'
+$pgLog = Join-Path $testRoot 'postgres.log'
+$pgCtlOut = Join-Path $testRoot 'pg-ctl.out.log'
+$pgCtlErr = Join-Path $testRoot 'pg-ctl.err.log'
+$serverOut = Join-Path $testRoot 'bell.out.log'
+$serverErr = Join-Path $testRoot 'bell.err.log'
+$serverExe = Join-Path $testRoot 'bell-server.exe'
+$serverRoot = (Resolve-Path (Join-Path $PSScriptRoot '..\server')).Path
+
+function Get-FreeTcpPort {
+    $listener = [Net.Sockets.TcpListener]::new([Net.IPAddress]::Loopback, 0)
+    try {
+        $listener.Start()
+        return ([Net.IPEndPoint]$listener.LocalEndpoint).Port
+    } finally {
+        $listener.Stop()
+    }
+}
+
+function Wait-Tcp([int]$Port, [bool]$Open, [int]$Attempts = 120) {
+    for ($attempt = 0; $attempt -lt $Attempts; $attempt++) {
+        $client = [Net.Sockets.TcpClient]::new()
+        try {
+            $connected = $client.ConnectAsync('127.0.0.1', $Port).Wait(250) -and $client.Connected
+        } catch {
+            $connected = $false
+        } finally {
+            $client.Dispose()
+        }
+        if ($connected -eq $Open) { return }
+        Start-Sleep -Milliseconds 250
+    }
+    throw "TCP port $Port did not reach open=$Open"
+}
+
+function Wait-Health([string]$BaseUrl) {
+    for ($attempt = 0; $attempt -lt 100; $attempt++) {
+        try {
+            $health = Invoke-RestMethod -Uri "$BaseUrl/healthz" -TimeoutSec 2 -NoProxy
+            if ($health.status -eq 'ok' -and $health.service -eq 'bell') { return }
+        } catch {}
+        Start-Sleep -Milliseconds 300
+    }
+    throw 'Bell health endpoint did not become ready'
+}
+
+function Start-Bell([string]$BaseUrl, [string]$Config = 'config/settings.demo.yml') {
+    $script:server = Start-Process -FilePath $serverExe -ArgumentList @('server', '-c', $Config) -WorkingDirectory $serverRoot -RedirectStandardOutput $serverOut -RedirectStandardError $serverErr -WindowStyle Hidden -PassThru
+    Wait-Health $BaseUrl
+}
+
+function Stop-Bell {
+    if ($null -ne $script:server -and -not $script:server.HasExited) {
+        Stop-Process -Id $script:server.Id -Force
+        $script:server.WaitForExit(5000) | Out-Null
+    }
+    $script:server = $null
+}
+
+New-Item -ItemType Directory -Path $testRoot | Out-Null
+$pgPort = Get-FreeTcpPort
+$bellPort = Get-FreeTcpPort
+$baseUrl = "http://127.0.0.1:$bellPort"
+$database = 'bell_131'
+$adminPassword = [guid]::NewGuid().ToString('N')
+
+try {
+    foreach ($required in @('initdb.exe', 'pg_ctl.exe', 'createdb.exe', 'psql.exe')) {
+        $path = Join-Path $PostgresBin $required
+        if (-not (Test-Path -LiteralPath $path -PathType Leaf)) { throw "Missing PostgreSQL tool: $path" }
+    }
+
+    & (Join-Path $PostgresBin 'initdb.exe') -D $pgData -U postgres -A trust --encoding=UTF8 --no-locale | Out-Null
+    if ($LASTEXITCODE -ne 0) { throw 'isolated PostgreSQL initdb failed' }
+    $pgArguments = "-D `"$pgData`" -l `"$pgLog`" -o `"-p $pgPort -h 127.0.0.1`" start"
+    Start-Process -FilePath (Join-Path $PostgresBin 'pg_ctl.exe') -ArgumentList $pgArguments -RedirectStandardOutput $pgCtlOut -RedirectStandardError $pgCtlErr -WindowStyle Hidden | Out-Null
+    Wait-Tcp -Port $pgPort -Open $true
+    $pgStarted = $true
+    & (Join-Path $PostgresBin 'createdb.exe') -h 127.0.0.1 -p $pgPort -U postgres $database
+    if ($LASTEXITCODE -ne 0) { throw 'isolated Bell database creation failed' }
+
+    $env:GOTOOLCHAIN = 'go1.26.5'
+    $env:BELL_DATABASE_URL = "host=127.0.0.1 port=$pgPort user=postgres dbname=$database sslmode=disable"
+    $env:BELL_JWT_SECRET = [guid]::NewGuid().ToString('N') + [guid]::NewGuid().ToString('N')
+    $env:BELL_BOOTSTRAP_USERNAME = 'bell_131_admin'
+    $env:BELL_BOOTSTRAP_PASSWORD = $adminPassword
+    $env:BELL_HOST = '127.0.0.1'
+    $env:BELL_PORT = $bellPort.ToString()
+    $env:BELL_SYNTHETIC_EVENTS_ENABLED = 'true'
+
+    Push-Location $serverRoot
+    try {
+        go run . migrate -c config/settings.demo.yml *> (Join-Path $testRoot 'migrate.log')
+        if ($LASTEXITCODE -ne 0) { throw 'Bell migration failed' }
+        go build -o $serverExe .
+        if ($LASTEXITCODE -ne 0) { throw 'Bell build failed' }
+    } finally {
+        Pop-Location
+    }
+
+    Start-Bell $baseUrl
+    $unauthorized = Invoke-RestMethod -Method Post -Uri "$baseUrl/api/v1/bell/synthetic-events" -ContentType 'application/json' -Body '{}' -TimeoutSec 5 -NoProxy
+    if ([int]$unauthorized.code -ne 401) { throw "unauthenticated request returned code $($unauthorized.code)" }
+
+    $loginBody = @{ username = 'bell_131_admin'; password = $adminPassword; code = '0'; uuid = '0' } | ConvertTo-Json -Compress
+    $login = Invoke-RestMethod -Method Post -Uri "$baseUrl/api/v1/login" -ContentType 'application/json' -Body $loginBody -TimeoutSec 5 -NoProxy
+    if ([int]$login.code -ne 200 -or [string]::IsNullOrWhiteSpace($login.token)) { throw 'Bell login failed' }
+    $headers = @{ Authorization = "Bearer $($login.token)" }
+
+    $occurredAt = '2026-08-29T00:00:00Z'
+    $eventBody = @{
+        sourceEventId = 'acceptance-001'; eventType = 'danger_area_entered'; occurredAt = $occurredAt
+        location = '东门'; severity = 'high'; evidenceRef = 'evidence/acceptance-001'
+        attributes = @{ rule = 'area-01'; target = 'anonymous' }
+    } | ConvertTo-Json -Depth 6 -Compress
+    $created = Invoke-RestMethod -Method Post -Uri "$baseUrl/api/v1/bell/synthetic-events" -Headers $headers -ContentType 'application/json; charset=utf-8' -Body $eventBody -TimeoutSec 10 -NoProxy
+    if ([int]$created.code -ne 200 -or $created.data.duplicate -ne $false) { throw 'first synthetic event was not accepted as new' }
+    $eventId = [string]$created.data.event.id
+    $receiptId = [string]$created.data.receipt.id
+    if ([string]::IsNullOrWhiteSpace($eventId) -or [string]::IsNullOrWhiteSpace($receiptId)) { throw 'event or receipt id missing' }
+
+    $replay = Invoke-RestMethod -Method Post -Uri "$baseUrl/api/v1/bell/synthetic-events" -Headers $headers -ContentType 'application/json; charset=utf-8' -Body $eventBody -TimeoutSec 10 -NoProxy
+    if ([int]$replay.code -ne 200 -or $replay.data.duplicate -ne $true -or $replay.data.event.id -ne $eventId) { throw 'idempotent replay failed' }
+
+    $concurrentBody = @{
+        sourceEventId = 'acceptance-concurrent'; eventType = 'danger_area_entered'; occurredAt = $occurredAt
+        location = '西门'; severity = 'medium'; evidenceRef = 'evidence/acceptance-concurrent'
+        attributes = @{ rule = 'area-02'; target = 'anonymous' }
+    } | ConvertTo-Json -Depth 6 -Compress
+    $authHeader = [string]$headers.Authorization
+    $concurrent = 1..12 | ForEach-Object -Parallel {
+        $requestHeaders = @{ Authorization = $using:authHeader }
+        Invoke-RestMethod -Method Post -Uri "$using:baseUrl/api/v1/bell/synthetic-events" -Headers $requestHeaders -ContentType 'application/json; charset=utf-8' -Body $using:concurrentBody -TimeoutSec 20 -NoProxy
+    } -ThrottleLimit 12
+    $concurrentIds = @($concurrent | ForEach-Object { [string]$_.data.event.id } | Sort-Object -Unique)
+    $newCount = @($concurrent | Where-Object { $_.data.duplicate -eq $false }).Count
+    if ($concurrent.Count -ne 12 -or $concurrentIds.Count -ne 1 -or $newCount -ne 1) { throw 'concurrent idempotency did not converge to one Event' }
+
+    $conflictObject = $eventBody | ConvertFrom-Json
+    $conflictObject.severity = 'critical'
+    $conflict = Invoke-RestMethod -Method Post -Uri "$baseUrl/api/v1/bell/synthetic-events" -Headers $headers -ContentType 'application/json; charset=utf-8' -Body ($conflictObject | ConvertTo-Json -Depth 6 -Compress) -TimeoutSec 10 -NoProxy
+    if ([int]$conflict.code -ne 409) { throw "idempotency conflict returned code $($conflict.code)" }
+
+    $malformed = Invoke-RestMethod -Method Post -Uri "$baseUrl/api/v1/bell/synthetic-events" -Headers $headers -ContentType 'application/json' -Body '{' -TimeoutSec 10 -NoProxy
+    if ([int]$malformed.code -ne 400) { throw "malformed request returned code $($malformed.code)" }
+    $oversized = @{ sourceEventId='too-large'; eventType='test'; occurredAt=$occurredAt; location='lab'; severity='low'; attributes=@{ blob=('x' * 70000) } } | ConvertTo-Json -Depth 5 -Compress
+    $tooLarge = Invoke-RestMethod -Method Post -Uri "$baseUrl/api/v1/bell/synthetic-events" -Headers $headers -ContentType 'application/json' -Body $oversized -TimeoutSec 10 -NoProxy
+    if ([int]$tooLarge.code -ne 400) { throw "oversized request returned code $($tooLarge.code)" }
+
+    $psql = Join-Path $PostgresBin 'psql.exe'
+    $counts = & $psql -h 127.0.0.1 -p $pgPort -U postgres -d $database -Atc "select count(*) from bell_events; select count(*) from bell_event_receipts; select count(*) from bell_event_ingest_audits where outcome='accepted'; select count(*) from bell_event_ingest_audits where outcome='replay'; select count(*) from bell_event_ingest_audits where outcome='conflict';"
+    if (($counts -join ',') -ne '2,2,2,12,1') { throw "unexpected Bell fact counts: $($counts -join ',')" }
+    $payloadAuditCount = & $psql -h 127.0.0.1 -p $pgPort -U postgres -d $database -Atc "select count(*) from sys_opera_log where oper_url='/api/v1/bell/synthetic-events' and (oper_param like '%sourceEventId%' or json_result like '%acceptance-001%');"
+    if ([int]$payloadAuditCount -ne 0) { throw 'generic GoAdmin audit retained synthetic event payload' }
+    & $psql -h 127.0.0.1 -p $pgPort -U postgres -d $database -v ON_ERROR_STOP=1 -c "update bell_events set severity='low' where id='$eventId'" 2>$null | Out-Null
+    if ($LASTEXITCODE -eq 0) { throw 'immutable Event update unexpectedly succeeded' }
+    & $psql -h 127.0.0.1 -p $pgPort -U postgres -d $database -v ON_ERROR_STOP=1 -c "delete from bell_event_receipts where id='$receiptId'" 2>$null | Out-Null
+    if ($LASTEXITCODE -eq 0) { throw 'immutable Receipt delete unexpectedly succeeded' }
+
+    Stop-Bell
+    Start-Bell $baseUrl
+    $afterRestart = Invoke-RestMethod -Uri "$baseUrl/api/v1/bell/events/$eventId" -Headers $headers -TimeoutSec 10 -NoProxy
+    if ([int]$afterRestart.code -ne 200 -or $afterRestart.data.id -ne $eventId) { throw 'Event was not readable after Bell restart' }
+
+    Stop-Bell
+    Start-Bell $baseUrl 'config/settings.yml'
+    $productionSynthetic = Invoke-WebRequest -Method Post -Uri "$baseUrl/api/v1/bell/synthetic-events" -ContentType 'application/json' -Body '{}' -TimeoutSec 10 -NoProxy -SkipHttpErrorCheck
+    if ([int]$productionSynthetic.StatusCode -ne 404) { throw "production synthetic route returned HTTP $($productionSynthetic.StatusCode)" }
+
+    Write-Output "BELL_131_SMOKE events=2 receipts=2 concurrent=12 audit=redacted immutable=true restart=true production_synthetic=404"
+} finally {
+    Stop-Bell
+    if ($pgStarted) {
+        & (Join-Path $PostgresBin 'pg_ctl.exe') -D $pgData -m fast stop *> (Join-Path $testRoot 'pg-stop.log')
+    }
+    foreach ($name in @('BELL_DATABASE_URL','BELL_JWT_SECRET','BELL_BOOTSTRAP_USERNAME','BELL_BOOTSTRAP_PASSWORD','BELL_HOST','BELL_PORT','BELL_SYNTHETIC_EVENTS_ENABLED')) {
+        Remove-Item "Env:$name" -ErrorAction SilentlyContinue
+    }
+    Write-Verbose "Bell #131 temporary artifacts: $testRoot"
+}

Bell/server/app/bell/alert/handler.go

@@ -0,0 +1,86 @@
+package alert
+
+import (
+	"errors"
+	"net/http"
+
+	"github.com/gin-gonic/gin"
+	"github.com/gin-gonic/gin/binding"
+	"github.com/go-admin-team/go-admin-core/sdk/api"
+
+	"go-admin/app/bell/evaluation"
+)
+
+type Handler struct{ api.Api }
+
+func (h Handler) List(c *gin.Context) {
+	var query PageQuery
+	h.MakeContext(c).MakeOrm().Bind(&query, binding.Form)
+	if h.Errors != nil {
+		h.Error(http.StatusBadRequest, errors.New("查询条件不正确"), "查询条件不正确")
+		return
+	}
+	items, count, err := NewService(h.Orm).List(c.Request.Context(), query)
+	if err != nil {
+		h.Logger.Errorf("list Bell alerts failed: %v", err)
+		h.Error(http.StatusInternalServerError, errors.New("读取预警失败"), "读取预警失败")
+		return
+	}
+	page, size := pageValues(query.PageIndex, query.PageSize)
+	h.PageOK(items, int(count), page, size, "查询成功")
+}
+
+func (h Handler) Get(c *gin.Context) {
+	h.MakeContext(c).MakeOrm()
+	if h.Errors != nil {
+		h.Error(http.StatusInternalServerError, errors.New("数据库连接获取失败"), "数据库连接获取失败")
+		return
+	}
+	detail, err := NewService(h.Orm).Get(c.Request.Context(), c.Param("id"))
+	if err != nil {
+		if errors.Is(err, ErrNotFound) {
+			h.Error(http.StatusNotFound, ErrNotFound, ErrNotFound.Error())
+			return
+		}
+		h.Logger.Errorf("get Bell alert failed: %v", err)
+		h.Error(http.StatusInternalServerError, errors.New("读取预警失败"), "读取预警失败")
+		return
+	}
+	h.OK(detail, "查询成功")
+}
+
+func (h Handler) ListEvents(c *gin.Context) {
+	var query EventPageQuery
+	h.MakeContext(c).MakeOrm().Bind(&query, binding.Form)
+	if h.Errors != nil {
+		h.Error(http.StatusBadRequest, errors.New("查询条件不正确"), "查询条件不正确")
+		return
+	}
+	items, count, err := NewService(h.Orm).ListEvents(c.Request.Context(), query)
+	if err != nil {
+		h.Logger.Errorf("list Bell events failed: %v", err)
+		h.Error(http.StatusInternalServerError, errors.New("读取事件失败"), "读取事件失败")
+		return
+	}
+	page, size := pageValues(query.PageIndex, query.PageSize)
+	h.PageOK(items, int(count), page, size, "查询成功")
+}
+
+func (h Handler) EventResults(c *gin.Context) {
+	h.MakeContext(c).MakeOrm()
+	if h.Errors != nil {
+		h.Error(http.StatusInternalServerError, errors.New("数据库连接获取失败"), "数据库连接获取失败")
+		return
+	}
+	result, err := evaluation.NewService(h.Orm).ForEvent(c.Request.Context(), c.Param("id"))
+	if err != nil {
+		if errors.Is(err, evaluation.ErrEventNotFound) {
+			h.Error(http.StatusNotFound, evaluation.ErrEventNotFound, evaluation.ErrEventNotFound.Error())
+			return
+		}
+		h.Logger.Errorf("get Bell event rule results failed: %v", err)
+		h.Error(http.StatusInternalServerError, errors.New("读取规则评估失败"), "读取规则评估失败")
+		return
+	}
+	h.OK(result, "查询成功")
+}

Bell/server/app/bell/alert/model.go

@@ -0,0 +1,40 @@
+package alert
+
+import (
+	"encoding/json"
+	"time"
+)
+
+type Alert struct {
+	ID             string    `json:"id" gorm:"type:uuid;primaryKey"`
+	PrimaryRuleID  string    `json:"primaryRuleId" gorm:"type:uuid;not null;index"`
+	CorrelationKey string    `json:"-" gorm:"size:384;not null"`
+	Status         string    `json:"status" gorm:"size:24;not null;default:open;index"`
+	Severity       string    `json:"severity" gorm:"size:16;not null;index"`
+	Summary        string    `json:"summary" gorm:"size:256;not null"`
+	Location       string    `json:"location" gorm:"size:256;not null;index"`
+	CreatedAt      time.Time `json:"createdAt" gorm:"type:timestamptz;not null;index"`
+	UpdatedAt      time.Time `json:"updatedAt" gorm:"type:timestamptz;not null"`
+}
+
+func (Alert) TableName() string { return "bell_alerts" }
+
+type AlertEvent struct {
+	AlertID  string    `json:"alertId" gorm:"type:uuid;primaryKey"`
+	EventID  string    `json:"eventId" gorm:"type:uuid;primaryKey"`
+	LinkedAt time.Time `json:"linkedAt" gorm:"type:timestamptz;not null"`
+}
+
+func (AlertEvent) TableName() string { return "bell_alert_events" }
+
+type RuleMatch struct {
+	EventID      string          `json:"eventId" gorm:"type:uuid;primaryKey"`
+	RuleID       string          `json:"ruleId" gorm:"type:uuid;primaryKey"`
+	AlertID      string          `json:"alertId" gorm:"type:uuid;not null;index"`
+	RuleVersion  int             `json:"ruleVersion" gorm:"not null"`
+	RuleSnapshot json.RawMessage `json:"ruleSnapshot" gorm:"type:jsonb;not null"`
+	Explanation  string          `json:"explanation" gorm:"size:512;not null"`
+	MatchedAt    time.Time       `json:"matchedAt" gorm:"type:timestamptz;not null"`
+}
+
+func (RuleMatch) TableName() string { return "bell_rule_matches" }

Bell/server/app/bell/alert/service.go

@@ -0,0 +1,136 @@
+package alert
+
+import (
+	"context"
+	"errors"
+	"strings"
+	"time"
+
+	"github.com/google/uuid"
+	"gorm.io/gorm"
+
+	"go-admin/app/bell/event"
+)
+
+var ErrNotFound = errors.New("预警不存在")
+
+type PageQuery struct {
+	PageIndex int    `form:"pageIndex"`
+	PageSize  int    `form:"pageSize"`
+	Status    string `form:"status"`
+	Severity  string `form:"severity"`
+	Location  string `form:"location"`
+}
+
+type Summary struct {
+	Alert
+	RuleName   string `json:"ruleName"`
+	EventCount int64  `json:"eventCount"`
+}
+
+type LinkedEvent struct {
+	event.Event
+	LinkedAt time.Time `json:"linkedAt"`
+}
+
+type Detail struct {
+	Alert   Summary       `json:"alert"`
+	Events  []LinkedEvent `json:"events"`
+	Matches []RuleMatch   `json:"matches"`
+}
+
+type Service struct{ DB *gorm.DB }
+
+func NewService(db *gorm.DB) Service { return Service{DB: db} }
+
+func (s Service) List(ctx context.Context, query PageQuery) ([]Summary, int64, error) {
+	page, size := pageValues(query.PageIndex, query.PageSize)
+	base := s.DB.WithContext(ctx).Table("bell_alerts a")
+	if query.Status = strings.TrimSpace(query.Status); query.Status != "" {
+		base = base.Where("a.status = ?", query.Status)
+	}
+	if query.Severity = strings.TrimSpace(query.Severity); query.Severity != "" {
+		base = base.Where("a.severity = ?", query.Severity)
+	}
+	if query.Location = strings.TrimSpace(query.Location); query.Location != "" {
+		base = base.Where("a.location ILIKE ?", "%"+query.Location+"%")
+	}
+	var count int64
+	if err := base.Count(&count).Error; err != nil {
+		return nil, 0, err
+	}
+	items := make([]Summary, 0)
+	err := base.Select("a.*, r.name AS rule_name, (SELECT count(*) FROM bell_alert_events ae WHERE ae.alert_id = a.id) AS event_count").
+		Joins("JOIN bell_rules r ON r.id = a.primary_rule_id").
+		Order("a.created_at DESC, a.id DESC").Offset((page - 1) * size).Limit(size).Scan(&items).Error
+	return items, count, err
+}
+
+func (s Service) Get(ctx context.Context, id string) (Detail, error) {
+	if _, err := uuid.Parse(id); err != nil {
+		return Detail{}, ErrNotFound
+	}
+	detail := Detail{Events: make([]LinkedEvent, 0), Matches: make([]RuleMatch, 0)}
+	db := s.DB.WithContext(ctx)
+	err := db.Table("bell_alerts a").
+		Select("a.*, r.name AS rule_name, (SELECT count(*) FROM bell_alert_events ae WHERE ae.alert_id = a.id) AS event_count").
+		Joins("JOIN bell_rules r ON r.id = a.primary_rule_id").Where("a.id = ?", id).Take(&detail.Alert).Error
+	if errors.Is(err, gorm.ErrRecordNotFound) {
+		return Detail{}, ErrNotFound
+	}
+	if err != nil {
+		return Detail{}, err
+	}
+	if err = db.Table("bell_events e").Select("e.*, ae.linked_at").
+		Joins("JOIN bell_alert_events ae ON ae.event_id = e.id").
+		Where("ae.alert_id = ?", id).Order("e.occurred_at, e.id").Scan(&detail.Events).Error; err != nil {
+		return Detail{}, err
+	}
+	err = db.Where("alert_id = ?", id).Order("matched_at, event_id, rule_id").Find(&detail.Matches).Error
+	return detail, err
+}
+
+type EventPageQuery struct {
+	PageIndex int    `form:"pageIndex"`
+	PageSize  int    `form:"pageSize"`
+	EventType string `form:"eventType"`
+	Severity  string `form:"severity"`
+	Location  string `form:"location"`
+}
+
+type EventSummary struct {
+	event.Event
+	AlertCount int64 `json:"alertCount"`
+}
+
+func (s Service) ListEvents(ctx context.Context, query EventPageQuery) ([]EventSummary, int64, error) {
+	page, size := pageValues(query.PageIndex, query.PageSize)
+	db := s.DB.WithContext(ctx).Model(&event.Event{})
+	if value := strings.TrimSpace(query.EventType); value != "" {
+		db = db.Where("event_type ILIKE ?", "%"+value+"%")
+	}
+	if value := strings.TrimSpace(query.Severity); value != "" {
+		db = db.Where("severity = ?", value)
+	}
+	if value := strings.TrimSpace(query.Location); value != "" {
+		db = db.Where("location ILIKE ?", "%"+value+"%")
+	}
+	var count int64
+	if err := db.Count(&count).Error; err != nil {
+		return nil, 0, err
+	}
+	items := make([]EventSummary, 0)
+	err := db.Select("bell_events.*, (SELECT count(*) FROM bell_alert_events ae WHERE ae.event_id = bell_events.id) AS alert_count").
+		Order("occurred_at DESC, id DESC").Offset((page - 1) * size).Limit(size).Scan(&items).Error
+	return items, count, err
+}
+
+func pageValues(page, size int) (int, int) {
+	if page < 1 {
+		page = 1
+	}
+	if size < 1 || size > 100 {
+		size = 20
+	}
+	return page, size
+}

Bell/server/app/bell/evaluation/model.go

@@ -0,0 +1,20 @@
+package evaluation
+
+import (
+	"encoding/json"
+	"time"
+)
+
+// Evaluation is an immutable explanation of one rule version evaluated
+// against one Event.
+type Evaluation struct {
+	EventID      string          `json:"eventId" gorm:"type:uuid;primaryKey"`
+	RuleID       string          `json:"ruleId" gorm:"type:uuid;primaryKey"`
+	RuleVersion  int             `json:"ruleVersion" gorm:"not null"`
+	RuleSnapshot json.RawMessage `json:"ruleSnapshot" gorm:"type:jsonb;not null"`
+	Matched      bool            `json:"matched" gorm:"not null"`
+	Explanation  string          `json:"explanation" gorm:"size:512;not null"`
+	EvaluatedAt  time.Time       `json:"evaluatedAt" gorm:"type:timestamptz;not null"`
+}
+
+func (Evaluation) TableName() string { return "bell_rule_evaluations" }

Bell/server/app/bell/evaluation/service.go

@@ -0,0 +1,50 @@
+package evaluation
+
+import (
+	"context"
+	"errors"
+
+	"github.com/google/uuid"
+	"gorm.io/gorm"
+)
+
+var ErrEventNotFound = errors.New("事件不存在")
+
+type EventResults struct {
+	Evaluations []Evaluation `json:"evaluations"`
+	Alerts      []AlertLink  `json:"alerts"`
+}
+
+type AlertLink struct {
+	ID       string `json:"id"`
+	Summary  string `json:"summary"`
+	Status   string `json:"status"`
+	Severity string `json:"severity"`
+	Location string `json:"location"`
+}
+
+type Service struct{ DB *gorm.DB }
+
+func NewService(db *gorm.DB) Service { return Service{DB: db} }
+
+func (s Service) ForEvent(ctx context.Context, eventID string) (EventResults, error) {
+	if _, err := uuid.Parse(eventID); err != nil {
+		return EventResults{}, ErrEventNotFound
+	}
+	var count int64
+	if err := s.DB.WithContext(ctx).Table("bell_events").Where("id = ?", eventID).Count(&count).Error; err != nil {
+		return EventResults{}, err
+	}
+	if count == 0 {
+		return EventResults{}, ErrEventNotFound
+	}
+	result := EventResults{Evaluations: make([]Evaluation, 0), Alerts: make([]AlertLink, 0)}
+	if err := s.DB.WithContext(ctx).Where("event_id = ?", eventID).Order("evaluated_at, rule_id").Find(&result.Evaluations).Error; err != nil {
+		return EventResults{}, err
+	}
+	err := s.DB.WithContext(ctx).Table("bell_alerts a").
+		Select("a.id, a.summary, a.status, a.severity, a.location").
+		Joins("JOIN bell_alert_events ae ON ae.alert_id = a.id").
+		Where("ae.event_id = ?", eventID).Order("a.created_at, a.id").Scan(&result.Alerts).Error
+	return result, err
+}

Bell/server/app/bell/event/errors.go

@@ -0,0 +1,9 @@
+package event
+
+import "errors"
+
+var (
+	ErrInvalid  = errors.New("事件字段无效")
+	ErrConflict = errors.New("幂等键已用于不同事件载荷")
+	ErrNotFound = errors.New("事件不存在")
+)

Bell/server/app/bell/event/model.go

@@ -0,0 +1,24 @@
+package event
+
+import (
+	"encoding/json"
+	"time"
+)
+
+// Event is an immutable Bell business fact. It intentionally does not embed
+// GoAdmin's mutable/soft-delete model fields.
+type Event struct {
+	ID                string          `json:"id" gorm:"type:uuid;primaryKey"`
+	ProducerID        string          `json:"producerId" gorm:"size:128;not null;uniqueIndex:bell_event_key"`
+	SourceEventID     string          `json:"sourceEventId" gorm:"size:256;not null;uniqueIndex:bell_event_key"`
+	EventType         string          `json:"eventType" gorm:"size:128;not null;index"`
+	OccurredAt        time.Time       `json:"occurredAt" gorm:"type:timestamptz;not null;index"`
+	Location          string          `json:"location" gorm:"size:256;not null;index"`
+	Severity          string          `json:"severity" gorm:"size:16;not null;index"`
+	EvidenceRef       *string         `json:"evidenceRef,omitempty" gorm:"size:512"`
+	NormalizedPayload json.RawMessage `json:"normalizedPayload" gorm:"type:jsonb;not null"`
+	PayloadSHA256     string          `json:"-" gorm:"type:char(64);not null"`
+	ReceivedAt        time.Time       `json:"receivedAt" gorm:"type:timestamptz;not null;index"`
+}
+
+func (Event) TableName() string { return "bell_events" }

Bell/server/app/bell/event/normalize.go

@@ -0,0 +1,105 @@
+package event
+
+import (
+	"bytes"
+	"crypto/sha256"
+	"encoding/hex"
+	"encoding/json"
+	"fmt"
+	"strings"
+	"time"
+	"unicode/utf8"
+)
+
+const (
+	maxProducerID    = 128
+	maxSourceEventID = 256
+	maxEventType     = 128
+	maxLocation      = 256
+	maxEvidenceRef   = 512
+	maxAttributes    = 48 * 1024
+)
+
+type Command struct {
+	ProducerID    string         `json:"producerId"`
+	SourceEventID string         `json:"sourceEventId"`
+	EventType     string         `json:"eventType"`
+	OccurredAt    time.Time      `json:"occurredAt"`
+	Location      string         `json:"location"`
+	Severity      string         `json:"severity"`
+	EvidenceRef   *string        `json:"evidenceRef,omitempty"`
+	Attributes    map[string]any `json:"attributes"`
+}
+
+type Normalized struct {
+	Command Command
+	Payload []byte
+	Digest  string
+}
+
+func Normalize(command Command) (Normalized, error) {
+	command.ProducerID = strings.TrimSpace(command.ProducerID)
+	command.SourceEventID = strings.TrimSpace(command.SourceEventID)
+	command.EventType = strings.TrimSpace(command.EventType)
+	command.Location = strings.TrimSpace(command.Location)
+	command.Severity = strings.ToLower(strings.TrimSpace(command.Severity))
+	command.OccurredAt = command.OccurredAt.UTC()
+
+	if !validText(command.ProducerID, maxProducerID) ||
+		!validText(command.SourceEventID, maxSourceEventID) ||
+		!validText(command.EventType, maxEventType) ||
+		!validText(command.Location, maxLocation) || command.OccurredAt.IsZero() {
+		return Normalized{}, ErrInvalid
+	}
+	switch command.Severity {
+	case "low", "medium", "high", "critical":
+	default:
+		return Normalized{}, ErrInvalid
+	}
+	if command.EvidenceRef != nil {
+		value := strings.TrimSpace(*command.EvidenceRef)
+		lower := strings.ToLower(value)
+		if !validText(value, maxEvidenceRef) || strings.Contains(value, "@") ||
+			strings.Contains(value, "\\") || strings.HasPrefix(lower, "file:") {
+			return Normalized{}, fmt.Errorf("%w: evidenceRef 必须是安全的逻辑引用", ErrInvalid)
+		}
+		command.EvidenceRef = &value
+	}
+	if command.Attributes == nil {
+		command.Attributes = map[string]any{}
+	}
+	attributes, err := canonicalJSON(command.Attributes)
+	if err != nil || len(attributes) > maxAttributes {
+		return Normalized{}, fmt.Errorf("%w: attributes 无效或过大", ErrInvalid)
+	}
+	// Round trip the attributes so map ordering and nested values have one
+	// deterministic representation before the complete command is hashed.
+	if err = json.Unmarshal(attributes, &command.Attributes); err != nil {
+		return Normalized{}, fmt.Errorf("%w: attributes 无效", ErrInvalid)
+	}
+	payload, err := json.Marshal(command)
+	if err != nil {
+		return Normalized{}, fmt.Errorf("normalize event: %w", err)
+	}
+	digest := sha256.Sum256(payload)
+	return Normalized{Command: command, Payload: payload, Digest: hex.EncodeToString(digest[:])}, nil
+}
+
+func canonicalJSON(value any) ([]byte, error) {
+	raw, err := json.Marshal(value)
+	if err != nil {
+		return nil, err
+	}
+	decoder := json.NewDecoder(bytes.NewReader(raw))
+	decoder.UseNumber()
+	var normalized any
+	if err = decoder.Decode(&normalized); err != nil {
+		return nil, err
+	}
+	return json.Marshal(normalized)
+}
+
+func validText(value string, max int) bool {
+	return value != "" && utf8.ValidString(value) && utf8.RuneCountInString(value) <= max &&
+		!strings.ContainsAny(value, "\x00\r\n")
+}

Bell/server/app/bell/event/service.go

@@ -0,0 +1,110 @@
+package event
+
+import (
+	"context"
+	"errors"
+	"fmt"
+	"time"
+
+	"github.com/google/uuid"
+	"gorm.io/gorm"
+
+	"go-admin/app/bell/receipt"
+)
+
+type Result struct {
+	Event     Event           `json:"event"`
+	Receipt   receipt.Receipt `json:"receipt"`
+	Duplicate bool            `json:"duplicate"`
+}
+
+type Service struct{ DB *gorm.DB }
+
+func NewService(db *gorm.DB) Service { return Service{DB: db} }
+
+func (s Service) Ingest(ctx context.Context, command Command, actorID int) (Result, error) {
+	if s.DB == nil {
+		return Result{}, errors.New("event database is unavailable")
+	}
+	normalized, err := Normalize(command)
+	if err != nil {
+		return Result{}, err
+	}
+	var result Result
+	err = s.DB.WithContext(ctx).Transaction(func(tx *gorm.DB) error {
+		lockKey := fmt.Sprintf("%d:%s:%s", len(normalized.Command.ProducerID), normalized.Command.ProducerID, normalized.Command.SourceEventID)
+		if err := tx.Exec("SELECT pg_advisory_xact_lock(hashtextextended(?, 0))", lockKey).Error; err != nil {
+			return fmt.Errorf("lock event idempotency key: %w", err)
+		}
+
+		var existing receipt.Receipt
+		err := tx.Where("producer_id = ? AND source_event_id = ?", normalized.Command.ProducerID, normalized.Command.SourceEventID).
+			First(&existing).Error
+		if err == nil {
+			if existing.PayloadSHA256 != normalized.Digest {
+				return ErrConflict
+			}
+			if err = tx.First(&result.Event, "id = ?", existing.EventID).Error; err != nil {
+				return fmt.Errorf("load replay event: %w", err)
+			}
+			result.Receipt = existing
+			result.Duplicate = true
+			return tx.Create(&receipt.IngestAudit{
+				ProducerID: normalized.Command.ProducerID, SourceEventID: normalized.Command.SourceEventID,
+				PayloadSHA256: normalized.Digest, Outcome: receipt.OutcomeReplay, ActorID: actorID, CreatedAt: time.Now().UTC(),
+			}).Error
+		}
+		if !errors.Is(err, gorm.ErrRecordNotFound) {
+			return fmt.Errorf("load event receipt: %w", err)
+		}
+
+		now := time.Now().UTC()
+		result.Event = Event{
+			ID: uuid.NewString(), ProducerID: normalized.Command.ProducerID,
+			SourceEventID: normalized.Command.SourceEventID, EventType: normalized.Command.EventType,
+			OccurredAt: normalized.Command.OccurredAt, Location: normalized.Command.Location,
+			Severity: normalized.Command.Severity, EvidenceRef: normalized.Command.EvidenceRef,
+			NormalizedPayload: normalized.Payload, PayloadSHA256: normalized.Digest, ReceivedAt: now,
+		}
+		result.Receipt = receipt.Receipt{
+			ID: uuid.NewString(), EventID: result.Event.ID, ProducerID: result.Event.ProducerID,
+			SourceEventID: result.Event.SourceEventID, PayloadSHA256: normalized.Digest, AcceptedAt: now,
+		}
+		if err = tx.Create(&result.Event).Error; err != nil {
+			return fmt.Errorf("create event: %w", err)
+		}
+		if err = tx.Create(&result.Receipt).Error; err != nil {
+			return fmt.Errorf("create event receipt: %w", err)
+		}
+		return tx.Create(&receipt.IngestAudit{
+			ProducerID: result.Event.ProducerID, SourceEventID: result.Event.SourceEventID,
+			PayloadSHA256: normalized.Digest, Outcome: receipt.OutcomeAccepted, ActorID: actorID, CreatedAt: now,
+		}).Error
+	})
+	if errors.Is(err, ErrConflict) {
+		// The conflict audit must commit independently from the rejected ingest.
+		auditErr := s.DB.WithContext(ctx).Create(&receipt.IngestAudit{
+			ProducerID: normalized.Command.ProducerID, SourceEventID: normalized.Command.SourceEventID,
+			PayloadSHA256: normalized.Digest, Outcome: receipt.OutcomeConflict, ActorID: actorID, CreatedAt: time.Now().UTC(),
+		}).Error
+		if auditErr != nil {
+			return Result{}, fmt.Errorf("record idempotency conflict audit: %w", auditErr)
+		}
+		return Result{}, ErrConflict
+	}
+	return result, err
+}
+
+func (s Service) Get(ctx context.Context, id string) (Event, error) {
+	if _, err := uuid.Parse(id); err != nil {
+		return Event{}, ErrNotFound
+	}
+	var item Event
+	if err := s.DB.WithContext(ctx).First(&item, "id = ?", id).Error; err != nil {
+		if errors.Is(err, gorm.ErrRecordNotFound) {
+			return Event{}, ErrNotFound
+		}
+		return Event{}, err
+	}
+	return item, nil
+}

Bell/server/app/bell/receipt/audit.go

@@ -0,0 +1,23 @@
+package receipt
+
+import "time"
+
+const (
+	OutcomeAccepted = "accepted"
+	OutcomeReplay   = "replay"
+	OutcomeConflict = "conflict"
+)
+
+// IngestAudit contains only identifiers, a digest and an outcome. Event payloads,
+// credentials and tokens must never be copied into this append-only audit table.
+type IngestAudit struct {
+	ID            int64     `json:"id" gorm:"primaryKey;autoIncrement"`
+	ProducerID    string    `json:"producerId" gorm:"size:128;not null;index"`
+	SourceEventID string    `json:"sourceEventId" gorm:"size:256;not null;index"`
+	PayloadSHA256 string    `json:"-" gorm:"type:char(64);not null"`
+	Outcome       string    `json:"outcome" gorm:"size:16;not null"`
+	ActorID       int       `json:"actorId" gorm:"not null"`
+	CreatedAt     time.Time `json:"createdAt" gorm:"type:timestamptz;not null"`
+}
+
+func (IngestAudit) TableName() string { return "bell_event_ingest_audits" }

Bell/server/app/bell/receipt/model.go

@@ -0,0 +1,16 @@
+package receipt
+
+import "time"
+
+// Receipt permanently binds an idempotency key to the accepted Event payload.
+// It deliberately has no UpdatedAt or soft-delete fields because it is immutable.
+type Receipt struct {
+	ID            string    `json:"id" gorm:"type:uuid;primaryKey"`
+	EventID       string    `json:"eventId" gorm:"type:uuid;not null;uniqueIndex"`
+	ProducerID    string    `json:"producerId" gorm:"size:128;not null;uniqueIndex:bell_receipt_key"`
+	SourceEventID string    `json:"sourceEventId" gorm:"size:256;not null;uniqueIndex:bell_receipt_key"`
+	PayloadSHA256 string    `json:"-" gorm:"type:char(64);not null"`
+	AcceptedAt    time.Time `json:"acceptedAt" gorm:"type:timestamptz;not null"`
+}
+
+func (Receipt) TableName() string { return "bell_event_receipts" }

Bell/server/app/bell/router/event.go

@@ -0,0 +1,38 @@
+package router
+
+import (
+	"errors"
+	"net/http"
+
+	"github.com/gin-gonic/gin"
+	"github.com/go-admin-team/go-admin-core/sdk/api"
+	jwt "github.com/go-admin-team/go-admin-core/sdk/pkg/jwtauth"
+
+	"go-admin/app/bell/event"
+)
+
+type eventHandler struct{ api.Api }
+
+func registerEventRouter(v1 *gin.RouterGroup, authMiddleware *jwt.GinJWTMiddleware) {
+	handler := eventHandler{}
+	v1.GET("/events/:id", authMiddleware.MiddlewareFunc(), handler.Get)
+}
+
+func (h eventHandler) Get(c *gin.Context) {
+	h.MakeContext(c).MakeOrm()
+	if h.Errors != nil {
+		h.Error(http.StatusInternalServerError, errors.New("数据库连接获取失败"), "数据库连接获取失败")
+		return
+	}
+	item, err := event.NewService(h.Orm).Get(c.Request.Context(), c.Param("id"))
+	if err != nil {
+		if errors.Is(err, event.ErrNotFound) {
+			h.Error(http.StatusNotFound, event.ErrNotFound, event.ErrNotFound.Error())
+			return
+		}
+		h.Logger.Errorf("load Bell event failed: %v", err)
+		h.Error(http.StatusInternalServerError, errors.New("读取事件失败"), "读取事件失败")
+		return
+	}
+	h.OK(item, "查询成功")
+}

Bell/server/app/bell/router/registry.go

@@ -0,0 +1,38 @@
+package router
+
+import (
+	"os"
+
+	"github.com/gin-gonic/gin"
+	log "github.com/go-admin-team/go-admin-core/logger"
+	"github.com/go-admin-team/go-admin-core/sdk"
+	"github.com/go-admin-team/go-admin-core/sdk/config"
+	jwt "github.com/go-admin-team/go-admin-core/sdk/pkg/jwtauth"
+
+	"go-admin/app/bell/synthetic"
+	"go-admin/common/middleware"
+)
+
+type registrar func(*gin.RouterGroup, *jwt.GinJWTMiddleware)
+
+var registrars = []registrar{registerEventRouter}
+
+func InitRouter() {
+	engine, ok := sdk.Runtime.GetEngine().(*gin.Engine)
+	if !ok || engine == nil {
+		log.Error("Bell business router requires Gin engine")
+		return
+	}
+	authMiddleware, err := middleware.AuthInit()
+	if err != nil {
+		log.Errorf("Bell business JWT init error: %v", err)
+		return
+	}
+	v1 := engine.Group("/api/v1/bell")
+	for _, register := range registrars {
+		register(v1, authMiddleware)
+	}
+	if synthetic.Enabled(config.ApplicationConfig.Mode, os.Getenv) {
+		registerSyntheticRouter(v1, authMiddleware)
+	}
+}

Bell/server/app/bell/router/rule_alert.go

@@ -0,0 +1,31 @@
+package router
+
+import (
+	"github.com/gin-gonic/gin"
+	jwt "github.com/go-admin-team/go-admin-core/sdk/pkg/jwtauth"
+
+	"go-admin/app/bell/alert"
+	"go-admin/app/bell/rule"
+	"go-admin/common/middleware"
+)
+
+func init() {
+	registrars = append(registrars, registerRuleAlertRouter)
+}
+
+func registerRuleAlertRouter(v1 *gin.RouterGroup, authMiddleware *jwt.GinJWTMiddleware) {
+	rules := rule.Handler{}
+	alerts := alert.Handler{}
+	secured := v1.Group("").Use(authMiddleware.MiddlewareFunc()).Use(middleware.AuthCheckRole())
+	{
+		secured.GET("/rules", rules.List)
+		secured.POST("/rules", rules.Create)
+		secured.PUT("/rules/:id", rules.Update)
+		secured.PUT("/rules/:id/enabled", rules.SetEnabled)
+
+		secured.GET("/alerts", alerts.List)
+		secured.GET("/alerts/:id", alerts.Get)
+		secured.GET("/events", alerts.ListEvents)
+		secured.GET("/events/:id/rule-results", alerts.EventResults)
+	}
+}

Bell/server/app/bell/router/synthetic.go

@@ -0,0 +1,13 @@
+package router
+
+import (
+	"github.com/gin-gonic/gin"
+	jwt "github.com/go-admin-team/go-admin-core/sdk/pkg/jwtauth"
+
+	"go-admin/app/bell/synthetic"
+)
+
+func registerSyntheticRouter(v1 *gin.RouterGroup, authMiddleware *jwt.GinJWTMiddleware) {
+	handler := synthetic.Handler{}
+	v1.POST("/synthetic-events", authMiddleware.MiddlewareFunc(), handler.Create)
+}

Bell/server/app/bell/rule/handler.go

@@ -0,0 +1,100 @@
+package rule
+
+import (
+	"errors"
+	"net/http"
+
+	"github.com/gin-gonic/gin"
+	"github.com/gin-gonic/gin/binding"
+	"github.com/go-admin-team/go-admin-core/sdk/api"
+	jwt "github.com/go-admin-team/go-admin-core/sdk/pkg/jwtauth"
+	"github.com/go-admin-team/go-admin-core/sdk/pkg/jwtauth/user"
+)
+
+type Handler struct{ api.Api }
+
+type enabledInput struct {
+	Enabled *bool `json:"enabled" binding:"required"`
+}
+
+func (h Handler) List(c *gin.Context) {
+	var query PageQuery
+	h.MakeContext(c).MakeOrm().Bind(&query, binding.Form)
+	if h.Errors != nil {
+		h.Error(http.StatusBadRequest, ErrInvalid, "查询条件不正确")
+		return
+	}
+	items, count, err := NewService(h.Orm).List(c.Request.Context(), query)
+	if err != nil {
+		h.Logger.Errorf("list Bell rules failed: %v", err)
+		h.Error(http.StatusInternalServerError, errors.New("读取规则失败"), "读取规则失败")
+		return
+	}
+	page, size := pageValues(query.PageIndex, query.PageSize)
+	h.PageOK(items, int(count), page, size, "查询成功")
+}
+
+func (h Handler) Create(c *gin.Context) {
+	if !isAdmin(c) {
+		h.MakeContext(c).Error(http.StatusForbidden, errors.New("仅管理员可修改规则"), "仅管理员可修改规则")
+		return
+	}
+	var input WriteInput
+	h.MakeContext(c).MakeOrm().Bind(&input, binding.JSON)
+	if h.Errors != nil {
+		h.Error(http.StatusBadRequest, ErrInvalid, ErrInvalid.Error())
+		return
+	}
+	item, err := NewService(h.Orm).Create(c.Request.Context(), input, user.GetUserId(c))
+	h.writeResult(item, err)
+}
+
+func (h Handler) Update(c *gin.Context) {
+	if !isAdmin(c) {
+		h.MakeContext(c).Error(http.StatusForbidden, errors.New("仅管理员可修改规则"), "仅管理员可修改规则")
+		return
+	}
+	var input WriteInput
+	h.MakeContext(c).MakeOrm().Bind(&input, binding.JSON)
+	if h.Errors != nil {
+		h.Error(http.StatusBadRequest, ErrInvalid, ErrInvalid.Error())
+		return
+	}
+	item, err := NewService(h.Orm).Update(c.Request.Context(), c.Param("id"), input, user.GetUserId(c))
+	h.writeResult(item, err)
+}
+
+func (h Handler) SetEnabled(c *gin.Context) {
+	if !isAdmin(c) {
+		h.MakeContext(c).Error(http.StatusForbidden, errors.New("仅管理员可修改规则"), "仅管理员可修改规则")
+		return
+	}
+	var input enabledInput
+	h.MakeContext(c).MakeOrm().Bind(&input, binding.JSON)
+	if h.Errors != nil || input.Enabled == nil {
+		h.Error(http.StatusBadRequest, ErrInvalid, ErrInvalid.Error())
+		return
+	}
+	item, err := NewService(h.Orm).SetEnabled(c.Request.Context(), c.Param("id"), *input.Enabled, user.GetUserId(c))
+	h.writeResult(item, err)
+}
+
+func (h Handler) writeResult(item Rule, err error) {
+	switch {
+	case err == nil:
+		h.OK(item, "保存成功")
+	case errors.Is(err, ErrInvalid):
+		h.Error(http.StatusBadRequest, ErrInvalid, ErrInvalid.Error())
+	case errors.Is(err, ErrNotFound):
+		h.Error(http.StatusNotFound, ErrNotFound, ErrNotFound.Error())
+	default:
+		h.Logger.Errorf("write Bell rule failed: %v", err)
+		h.Error(http.StatusConflict, errors.New("规则编码已存在或保存失败"), "规则编码已存在或保存失败")
+	}
+}
+
+func isAdmin(c *gin.Context) bool {
+	claims := jwt.ExtractClaims(c)
+	role, _ := claims[jwt.RoleKey].(string)
+	return role == "admin"
+}

Bell/server/app/bell/rule/model.go

@@ -0,0 +1,22 @@
+package rule
+
+import "time"
+
+// Rule is the current editable rule definition. Historical evaluations keep a
+// complete versioned snapshot, so editing this row never rewrites history.
+type Rule struct {
+	ID               string    `json:"id" gorm:"type:uuid;primaryKey"`
+	Code             string    `json:"code" gorm:"size:128;not null;uniqueIndex"`
+	Name             string    `json:"name" gorm:"size:128;not null"`
+	Enabled          bool      `json:"enabled" gorm:"not null;default:true;index"`
+	EventType        *string   `json:"eventType,omitempty" gorm:"size:128"`
+	MinimumSeverity  string    `json:"minimumSeverity" gorm:"size:16;not null"`
+	LocationContains *string   `json:"locationContains,omitempty" gorm:"size:128"`
+	Version          int       `json:"version" gorm:"not null;default:1"`
+	CreatedBy        int       `json:"createdBy" gorm:"not null"`
+	UpdatedBy        int       `json:"updatedBy" gorm:"not null"`
+	CreatedAt        time.Time `json:"createdAt" gorm:"type:timestamptz;not null"`
+	UpdatedAt        time.Time `json:"updatedAt" gorm:"type:timestamptz;not null"`
+}
+
+func (Rule) TableName() string { return "bell_rules" }

Bell/server/app/bell/rule/service.go

@@ -0,0 +1,124 @@
+package rule
+
+import (
+	"context"
+	"errors"
+	"strings"
+	"time"
+
+	"github.com/google/uuid"
+	"gorm.io/gorm"
+	"gorm.io/gorm/clause"
+)
+
+type PageQuery struct {
+	PageIndex int    `form:"pageIndex"`
+	PageSize  int    `form:"pageSize"`
+	Name      string `form:"name"`
+	Enabled   *bool  `form:"enabled"`
+}
+
+type Service struct{ DB *gorm.DB }
+
+func NewService(db *gorm.DB) Service { return Service{DB: db} }
+
+func (s Service) List(ctx context.Context, query PageQuery) ([]Rule, int64, error) {
+	page, size := pageValues(query.PageIndex, query.PageSize)
+	db := s.DB.WithContext(ctx).Model(&Rule{})
+	if name := strings.TrimSpace(query.Name); name != "" {
+		db = db.Where("name ILIKE ? OR code ILIKE ?", "%"+name+"%", "%"+name+"%")
+	}
+	if query.Enabled != nil {
+		db = db.Where("enabled = ?", *query.Enabled)
+	}
+	var count int64
+	if err := db.Count(&count).Error; err != nil {
+		return nil, 0, err
+	}
+	items := make([]Rule, 0)
+	err := db.Order("created_at DESC, id DESC").Offset((page - 1) * size).Limit(size).Find(&items).Error
+	return items, count, err
+}
+
+func (s Service) Create(ctx context.Context, input WriteInput, actorID int) (Rule, error) {
+	normalized, err := Normalize(input, true)
+	if err != nil {
+		return Rule{}, err
+	}
+	now := time.Now().UTC()
+	item := Rule{
+		ID: uuid.NewString(), Code: normalized.Code, Name: normalized.Name, Enabled: true,
+		EventType: normalized.EventType, MinimumSeverity: normalized.MinimumSeverity,
+		LocationContains: normalized.LocationContains, Version: 1,
+		CreatedBy: actorID, UpdatedBy: actorID, CreatedAt: now, UpdatedAt: now,
+	}
+	if err = s.DB.WithContext(ctx).Create(&item).Error; err != nil {
+		return Rule{}, err
+	}
+	return item, nil
+}
+
+func (s Service) Update(ctx context.Context, id string, input WriteInput, actorID int) (Rule, error) {
+	if _, err := uuid.Parse(id); err != nil {
+		return Rule{}, ErrNotFound
+	}
+	normalized, err := Normalize(input, false)
+	if err != nil {
+		return Rule{}, err
+	}
+	var item Rule
+	err = s.DB.WithContext(ctx).Transaction(func(tx *gorm.DB) error {
+		if err := tx.Clauses(clause.Locking{Strength: "UPDATE"}).First(&item, "id = ?", id).Error; err != nil {
+			if errors.Is(err, gorm.ErrRecordNotFound) {
+				return ErrNotFound
+			}
+			return err
+		}
+		updates := map[string]any{
+			"name": normalized.Name, "event_type": normalized.EventType,
+			"minimum_severity": normalized.MinimumSeverity, "location_contains": normalized.LocationContains,
+			"version": item.Version + 1, "updated_by": actorID, "updated_at": time.Now().UTC(),
+		}
+		if err := tx.Model(&item).Updates(updates).Error; err != nil {
+			return err
+		}
+		return tx.First(&item, "id = ?", id).Error
+	})
+	return item, err
+}
+
+func (s Service) SetEnabled(ctx context.Context, id string, enabled bool, actorID int) (Rule, error) {
+	if _, err := uuid.Parse(id); err != nil {
+		return Rule{}, ErrNotFound
+	}
+	var item Rule
+	err := s.DB.WithContext(ctx).Transaction(func(tx *gorm.DB) error {
+		if err := tx.Clauses(clause.Locking{Strength: "UPDATE"}).First(&item, "id = ?", id).Error; err != nil {
+			if errors.Is(err, gorm.ErrRecordNotFound) {
+				return ErrNotFound
+			}
+			return err
+		}
+		if item.Enabled == enabled {
+			return nil
+		}
+		if err := tx.Model(&item).Updates(map[string]any{
+			"enabled": enabled, "version": item.Version + 1,
+			"updated_by": actorID, "updated_at": time.Now().UTC(),
+		}).Error; err != nil {
+			return err
+		}
+		return tx.First(&item, "id = ?", id).Error
+	})
+	return item, err
+}
+
+func pageValues(page, size int) (int, int) {
+	if page < 1 {
+		page = 1
+	}
+	if size < 1 || size > 100 {
+		size = 20
+	}
+	return page, size
+}

Bell/server/app/bell/rule/validation.go

@@ -0,0 +1,70 @@
+package rule
+
+import (
+	"errors"
+	"regexp"
+	"strings"
+	"unicode/utf8"
+)
+
+var (
+	ErrInvalid  = errors.New("规则内容不符合要求")
+	ErrNotFound = errors.New("规则不存在")
+	codePattern = regexp.MustCompile(`^[a-z0-9][a-z0-9_-]{1,127}$`)
+)
+
+type WriteInput struct {
+	Code             string  `json:"code"`
+	Name             string  `json:"name"`
+	EventType        *string `json:"eventType"`
+	MinimumSeverity  string  `json:"minimumSeverity"`
+	LocationContains *string `json:"locationContains"`
+}
+
+func Normalize(input WriteInput, requireCode bool) (WriteInput, error) {
+	input.Code = strings.ToLower(strings.TrimSpace(input.Code))
+	input.Name = strings.TrimSpace(input.Name)
+	input.MinimumSeverity = strings.ToLower(strings.TrimSpace(input.MinimumSeverity))
+	if requireCode && !codePattern.MatchString(input.Code) {
+		return WriteInput{}, ErrInvalid
+	}
+	if !validText(input.Name, 128) || !validSeverity(input.MinimumSeverity) {
+		return WriteInput{}, ErrInvalid
+	}
+	var err error
+	if input.EventType, err = optionalText(input.EventType, 128); err != nil {
+		return WriteInput{}, err
+	}
+	if input.LocationContains, err = optionalText(input.LocationContains, 128); err != nil {
+		return WriteInput{}, err
+	}
+	return input, nil
+}
+
+func validSeverity(value string) bool {
+	switch value {
+	case "low", "medium", "high", "critical":
+		return true
+	default:
+		return false
+	}
+}
+
+func optionalText(value *string, max int) (*string, error) {
+	if value == nil {
+		return nil, nil
+	}
+	normalized := strings.TrimSpace(*value)
+	if normalized == "" {
+		return nil, nil
+	}
+	if !validText(normalized, max) {
+		return nil, ErrInvalid
+	}
+	return &normalized, nil
+}
+
+func validText(value string, max int) bool {
+	return value != "" && utf8.ValidString(value) && utf8.RuneCountInString(value) <= max &&
+		!strings.ContainsAny(value, "\x00\r\n")
+}

Bell/server/app/bell/synthetic/config.go

@@ -0,0 +1,19 @@
+package synthetic
+
+import (
+	"os"
+	"strings"
+)
+
+const EnabledEnv = "BELL_SYNTHETIC_EVENTS_ENABLED"
+
+// Enabled requires both a non-production runtime and an explicit opt-in.
+func Enabled(mode string, getenv func(string) string) bool {
+	if strings.EqualFold(strings.TrimSpace(mode), "prod") || strings.EqualFold(strings.TrimSpace(mode), "production") {
+		return false
+	}
+	value := strings.ToLower(strings.TrimSpace(getenv(EnabledEnv)))
+	return value == "true" || value == "1"
+}
+
+func EnabledFromEnvironment(mode string) bool { return Enabled(mode, os.Getenv) }

Bell/server/app/bell/synthetic/handler.go

@@ -0,0 +1,58 @@
+package synthetic
+
+import (
+	"errors"
+	"net/http"
+
+	"github.com/gin-gonic/gin"
+	"github.com/gin-gonic/gin/binding"
+	"github.com/go-admin-team/go-admin-core/sdk/api"
+	jwt "github.com/go-admin-team/go-admin-core/sdk/pkg/jwtauth"
+	"github.com/go-admin-team/go-admin-core/sdk/pkg/jwtauth/user"
+
+	"go-admin/app/bell/event"
+)
+
+const maxRequestBytes = 64 * 1024
+
+type Handler struct{ api.Api }
+
+func IsAdministrator(c *gin.Context) bool {
+	claims := jwt.ExtractClaims(c)
+	role, _ := claims[jwt.RoleKey].(string)
+	return role == "admin"
+}
+
+func (h Handler) Create(c *gin.Context) {
+	if !IsAdministrator(c) {
+		h.MakeContext(c).Error(http.StatusForbidden, errors.New("无权使用合成事件入口"), "无权使用合成事件入口")
+		return
+	}
+	if err := restoreRequestBody(c); err != nil {
+		h.MakeContext(c).Error(http.StatusBadRequest, errors.New("请求内容格式不正确"), "请求内容格式不正确")
+		return
+	}
+	var request CreateRequest
+	h.MakeContext(c).MakeOrm().Bind(&request, binding.JSON)
+	if h.Errors != nil {
+		h.Error(http.StatusBadRequest, errors.New("请求内容格式不正确"), "请求内容格式不正确")
+		return
+	}
+	result, err := event.NewService(h.Orm).Ingest(c.Request.Context(), request.Command(), user.GetUserId(c))
+	if err != nil {
+		switch {
+		case errors.Is(err, event.ErrInvalid):
+			h.Error(http.StatusBadRequest, event.ErrInvalid, event.ErrInvalid.Error())
+		case errors.Is(err, event.ErrConflict):
+			h.Error(http.StatusConflict, event.ErrConflict, event.ErrConflict.Error())
+		default:
+			h.Logger.Errorf("synthetic event ingest failed: %v", err)
+			h.Error(http.StatusInternalServerError, errors.New("合成事件写入失败"), "合成事件写入失败")
+		}
+		return
+	}
+	h.OK(result, "合成事件已接收")
+	// The client already received the full response. Keep only a fixed marker
+	// for GoAdmin's generic operation audit, which runs after the handler.
+	c.Set("result", gin.H{"code": http.StatusOK, "data": "<redacted>"})
+}

Bell/server/app/bell/synthetic/redaction.go

@@ -0,0 +1,53 @@
+package synthetic
+
+import (
+	"bytes"
+	"errors"
+	"io"
+	"net/http"
+
+	"github.com/gin-gonic/gin"
+)
+
+const (
+	requestBodyKey      = "bell.synthetic.request-body"
+	requestBodyErrorKey = "bell.synthetic.request-body-error"
+)
+
+var redactedRequestBody = []byte(`{"redacted":true}`)
+
+// RedactRequestBody runs before GoAdmin's operation logger. It keeps the real
+// body only in the request context for the handler and exposes a fixed marker
+// to the generic audit middleware so event payloads never enter sys_opera_log.
+func RedactRequestBody() gin.HandlerFunc {
+	return func(c *gin.Context) {
+		if c.Request.Method != http.MethodPost || c.Request.URL.Path != "/api/v1/bell/synthetic-events" {
+			c.Next()
+			return
+		}
+		body, err := io.ReadAll(io.LimitReader(c.Request.Body, maxRequestBytes+1))
+		if err != nil {
+			c.Set(requestBodyErrorKey, err)
+		} else if len(body) > maxRequestBytes {
+			c.Set(requestBodyErrorKey, errors.New("request body too large"))
+		} else {
+			c.Set(requestBodyKey, body)
+		}
+		_ = c.Request.Body.Close()
+		c.Request.Body = io.NopCloser(bytes.NewReader(redactedRequestBody))
+		c.Next()
+	}
+}
+
+func restoreRequestBody(c *gin.Context) error {
+	if value, ok := c.Get(requestBodyErrorKey); ok {
+		return value.(error)
+	}
+	value, ok := c.Get(requestBodyKey)
+	if !ok {
+		return errors.New("synthetic request body was not captured")
+	}
+	body := value.([]byte)
+	c.Request.Body = io.NopCloser(bytes.NewReader(body))
+	return nil
+}

Bell/server/app/bell/synthetic/request.go

@@ -0,0 +1,27 @@
+package synthetic
+
+import (
+	"time"
+
+	"go-admin/app/bell/event"
+)
+
+const ProducerID = "bell.synthetic"
+
+type CreateRequest struct {
+	SourceEventID string         `json:"sourceEventId" binding:"required"`
+	EventType     string         `json:"eventType" binding:"required"`
+	OccurredAt    time.Time      `json:"occurredAt" binding:"required"`
+	Location      string         `json:"location" binding:"required"`
+	Severity      string         `json:"severity" binding:"required"`
+	EvidenceRef   *string        `json:"evidenceRef,omitempty"`
+	Attributes    map[string]any `json:"attributes"`
+}
+
+func (r CreateRequest) Command() event.Command {
+	return event.Command{
+		ProducerID: ProducerID, SourceEventID: r.SourceEventID, EventType: r.EventType,
+		OccurredAt: r.OccurredAt, Location: r.Location, Severity: r.Severity,
+		EvidenceRef: r.EvidenceRef, Attributes: r.Attributes,
+	}
+}

Bell/server/cmd/api/server.go

@@ -20,6 +20,8 @@ import (
 
 	"go-admin/app/admin/models"
 	"go-admin/app/admin/router"
+	bellrouter "go-admin/app/bell/router"
+	"go-admin/app/bell/synthetic"
 	"go-admin/common/bellconfig"
 	"go-admin/common/database"
 	"go-admin/common/global"
@@ -54,6 +56,7 @@ func init() {
 
 	//注册路由 fixme 其他应用的路由，在本目录新建文件放在init方法
 	AppRouters = append(AppRouters, router.InitRouter)
+	AppRouters = append(AppRouters, bellrouter.InitRouter)
 }
 
 func setup() error {
@@ -178,7 +181,8 @@ func initRouter() {
 	//r.Use(middleware.Metrics())
 	r.Use(common.Sentinel()).
 		Use(common.RequestId(pkg.TrafficKey)).
-		Use(api.SetRequestLogger)
+		Use(api.SetRequestLogger).
+		Use(synthetic.RedactRequestBody())
 
 	common.InitMiddleware(r)
 

Bell/server/cmd/migrate/migration/version-local/2026082909001_bell_event_receipt.go

@@ -0,0 +1,39 @@
+package version_local
+
+import (
+	"runtime"
+
+	"gorm.io/gorm"
+
+	"go-admin/app/bell/event"
+	"go-admin/app/bell/receipt"
+	"go-admin/cmd/migrate/migration"
+	common "go-admin/common/models"
+)
+
+func init() {
+	_, fileName, _, _ := runtime.Caller(0)
+	migration.Migrate.SetVersion(migration.GetFilename(fileName), migrateBellEventReceipt)
+}
+
+func migrateBellEventReceipt(db *gorm.DB, version string) error {
+	return db.Transaction(func(tx *gorm.DB) error {
+		if err := tx.AutoMigrate(new(event.Event), new(receipt.Receipt), new(receipt.IngestAudit)); err != nil {
+			return err
+		}
+		statements := []string{
+			`ALTER TABLE bell_event_receipts ADD CONSTRAINT bell_event_receipts_event_fk FOREIGN KEY (event_id) REFERENCES bell_events(id) ON UPDATE RESTRICT ON DELETE RESTRICT`,
+			`ALTER TABLE bell_events ADD CONSTRAINT bell_events_severity_check CHECK (severity IN ('low','medium','high','critical'))`,
+			`CREATE OR REPLACE FUNCTION bell_reject_immutable_fact() RETURNS trigger LANGUAGE plpgsql AS $$ BEGIN RAISE EXCEPTION 'Bell immutable fact cannot be changed' USING ERRCODE = '55000'; END $$`,
+			`CREATE TRIGGER bell_events_immutable BEFORE UPDATE OR DELETE ON bell_events FOR EACH ROW EXECUTE FUNCTION bell_reject_immutable_fact()`,
+			`CREATE TRIGGER bell_event_receipts_immutable BEFORE UPDATE OR DELETE ON bell_event_receipts FOR EACH ROW EXECUTE FUNCTION bell_reject_immutable_fact()`,
+			`CREATE TRIGGER bell_event_ingest_audits_immutable BEFORE UPDATE OR DELETE ON bell_event_ingest_audits FOR EACH ROW EXECUTE FUNCTION bell_reject_immutable_fact()`,
+		}
+		for _, statement := range statements {
+			if err := tx.Exec(statement).Error; err != nil {
+				return err
+			}
+		}
+		return tx.Create(&common.Migration{Version: version}).Error
+	})
+}

Bell/server/cmd/migrate/migration/version-local/2026082909301_bell_rule_alert.go

@@ -0,0 +1,257 @@
+package version_local
+
+import (
+	"fmt"
+	"runtime"
+
+	"gorm.io/gorm"
+
+	"go-admin/app/bell/alert"
+	"go-admin/app/bell/evaluation"
+	"go-admin/app/bell/rule"
+	"go-admin/cmd/migrate/migration"
+	common "go-admin/common/models"
+)
+
+func init() {
+	_, fileName, _, _ := runtime.Caller(0)
+	migration.Migrate.SetVersion(migration.GetFilename(fileName), migrateBellRuleAlert)
+}
+
+func migrateBellRuleAlert(db *gorm.DB, version string) error {
+	return db.Transaction(func(tx *gorm.DB) error {
+		if err := tx.AutoMigrate(new(rule.Rule), new(evaluation.Evaluation), new(alert.Alert), new(alert.AlertEvent), new(alert.RuleMatch), new(runtimeCasbinRule)); err != nil {
+			return err
+		}
+		for _, statement := range bellRuleAlertSchemaSQL {
+			if err := tx.Exec(statement).Error; err != nil {
+				return err
+			}
+		}
+		if err := seedBellRuleAlertAccess(tx); err != nil {
+			return err
+		}
+		return tx.Create(&common.Migration{Version: version}).Error
+	})
+}
+
+var bellRuleAlertSchemaSQL = []string{
+	`ALTER TABLE bell_rules ADD CONSTRAINT bell_rules_severity_check CHECK (minimum_severity IN ('low','medium','high','critical'))`,
+	`ALTER TABLE bell_rules ADD CONSTRAINT bell_rules_version_check CHECK (version > 0)`,
+	`ALTER TABLE bell_alerts ADD CONSTRAINT bell_alerts_status_check CHECK (status IN ('open','acknowledged','closed'))`,
+	`ALTER TABLE bell_alerts ADD CONSTRAINT bell_alerts_severity_check CHECK (severity IN ('low','medium','high','critical'))`,
+	`ALTER TABLE bell_rule_evaluations ADD CONSTRAINT bell_rule_evaluations_event_fk FOREIGN KEY (event_id) REFERENCES bell_events(id) ON UPDATE RESTRICT ON DELETE RESTRICT`,
+	`ALTER TABLE bell_rule_evaluations ADD CONSTRAINT bell_rule_evaluations_rule_fk FOREIGN KEY (rule_id) REFERENCES bell_rules(id) ON UPDATE RESTRICT ON DELETE RESTRICT`,
+	`ALTER TABLE bell_alerts ADD CONSTRAINT bell_alerts_rule_fk FOREIGN KEY (primary_rule_id) REFERENCES bell_rules(id) ON UPDATE RESTRICT ON DELETE RESTRICT`,
+	`ALTER TABLE bell_alert_events ADD CONSTRAINT bell_alert_events_alert_fk FOREIGN KEY (alert_id) REFERENCES bell_alerts(id) ON UPDATE RESTRICT ON DELETE RESTRICT`,
+	`ALTER TABLE bell_alert_events ADD CONSTRAINT bell_alert_events_event_fk FOREIGN KEY (event_id) REFERENCES bell_events(id) ON UPDATE RESTRICT ON DELETE RESTRICT`,
+	`ALTER TABLE bell_rule_matches ADD CONSTRAINT bell_rule_matches_alert_fk FOREIGN KEY (alert_id) REFERENCES bell_alerts(id) ON UPDATE RESTRICT ON DELETE RESTRICT`,
+	`ALTER TABLE bell_rule_matches ADD CONSTRAINT bell_rule_matches_event_fk FOREIGN KEY (event_id) REFERENCES bell_events(id) ON UPDATE RESTRICT ON DELETE RESTRICT`,
+	`ALTER TABLE bell_rule_matches ADD CONSTRAINT bell_rule_matches_rule_fk FOREIGN KEY (rule_id) REFERENCES bell_rules(id) ON UPDATE RESTRICT ON DELETE RESTRICT`,
+	`CREATE UNIQUE INDEX bell_alert_open_correlation_idx ON bell_alerts(primary_rule_id, correlation_key) WHERE status = 'open'`,
+	`CREATE INDEX bell_alert_events_event_idx ON bell_alert_events(event_id, alert_id)`,
+	`CREATE TRIGGER bell_rule_evaluations_immutable BEFORE UPDATE OR DELETE ON bell_rule_evaluations FOR EACH ROW EXECUTE FUNCTION bell_reject_immutable_fact()`,
+	`CREATE TRIGGER bell_alert_events_immutable BEFORE UPDATE OR DELETE ON bell_alert_events FOR EACH ROW EXECUTE FUNCTION bell_reject_immutable_fact()`,
+	`CREATE TRIGGER bell_rule_matches_immutable BEFORE UPDATE OR DELETE ON bell_rule_matches FOR EACH ROW EXECUTE FUNCTION bell_reject_immutable_fact()`,
+	`CREATE OR REPLACE FUNCTION bell_evaluate_new_event() RETURNS trigger LANGUAGE plpgsql AS $$
+DECLARE
+    current_rule bell_rules%ROWTYPE;
+    is_match boolean;
+    reasons text[];
+    explanation_text text;
+    snapshot jsonb;
+    target_alert_id uuid;
+    correlation text;
+BEGIN
+    FOR current_rule IN SELECT * FROM bell_rules WHERE enabled = true ORDER BY id LOOP
+        reasons := ARRAY[]::text[];
+        IF current_rule.event_type IS NOT NULL AND current_rule.event_type <> NEW.event_type THEN
+            reasons := array_append(reasons, '事件类型不匹配');
+        END IF;
+        IF array_position(ARRAY['low','medium','high','critical'], NEW.severity) <
+           array_position(ARRAY['low','medium','high','critical'], current_rule.minimum_severity) THEN
+            reasons := array_append(reasons, '风险等级低于阈值');
+        END IF;
+        IF current_rule.location_contains IS NOT NULL AND
+           position(lower(current_rule.location_contains) in lower(NEW.location)) = 0 THEN
+            reasons := array_append(reasons, '地点条件不匹配');
+        END IF;
+        is_match := cardinality(reasons) = 0;
+        explanation_text := CASE WHEN is_match THEN '全部条件命中' ELSE array_to_string(reasons, '；') END;
+        snapshot := jsonb_build_object(
+            'id', current_rule.id, 'code', current_rule.code, 'name', current_rule.name,
+            'enabled', current_rule.enabled, 'eventType', current_rule.event_type,
+            'minimumSeverity', current_rule.minimum_severity,
+            'locationContains', current_rule.location_contains, 'version', current_rule.version
+        );
+        INSERT INTO bell_rule_evaluations(event_id, rule_id, rule_version, rule_snapshot, matched, explanation, evaluated_at)
+        VALUES(NEW.id, current_rule.id, current_rule.version, snapshot, is_match, explanation_text, now());
+        IF NOT is_match THEN
+            CONTINUE;
+        END IF;
+        correlation := lower(trim(NEW.location));
+        INSERT INTO bell_alerts(id, primary_rule_id, correlation_key, status, severity, summary, location, created_at, updated_at)
+        VALUES(gen_random_uuid(), current_rule.id, correlation, 'open', NEW.severity,
+               left(current_rule.name || '：' || NEW.event_type, 256), NEW.location, now(), now())
+        ON CONFLICT(primary_rule_id, correlation_key) WHERE status = 'open'
+        DO UPDATE SET
+            updated_at = now(),
+            severity = CASE
+                WHEN array_position(ARRAY['low','medium','high','critical'], EXCLUDED.severity) >
+                     array_position(ARRAY['low','medium','high','critical'], bell_alerts.severity)
+                THEN EXCLUDED.severity ELSE bell_alerts.severity END
+        RETURNING id INTO target_alert_id;
+        INSERT INTO bell_alert_events(alert_id, event_id, linked_at)
+        VALUES(target_alert_id, NEW.id, now());
+        INSERT INTO bell_rule_matches(event_id, rule_id, alert_id, rule_version, rule_snapshot, explanation, matched_at)
+        VALUES(NEW.id, current_rule.id, target_alert_id, current_rule.version, snapshot, explanation_text, now());
+    END LOOP;
+    RETURN NEW;
+END $$`,
+	`CREATE TRIGGER bell_events_evaluate_rules AFTER INSERT ON bell_events FOR EACH ROW EXECUTE FUNCTION bell_evaluate_new_event()`,
+}
+
+type menuSeed struct {
+	ID         int
+	Permission string
+}
+
+type apiSeed struct {
+	ID     int
+	Path   string
+	Action string
+}
+
+// runtimeCasbinRule deliberately matches the table used by the frozen
+// go-admin-core gorm adapter. The legacy SysCasbinRule model is not the table
+// loaded by middleware.AuthCheckRole in this baseline.
+type runtimeCasbinRule struct {
+	ID    uint   `gorm:"primaryKey;autoIncrement"`
+	Ptype string `gorm:"size:100;uniqueIndex:idx_casbin_rule"`
+	V0    string `gorm:"size:100;uniqueIndex:idx_casbin_rule"`
+	V1    string `gorm:"size:100;uniqueIndex:idx_casbin_rule"`
+	V2    string `gorm:"size:100;uniqueIndex:idx_casbin_rule"`
+	V3    string `gorm:"size:100;uniqueIndex:idx_casbin_rule"`
+	V4    string `gorm:"size:100;uniqueIndex:idx_casbin_rule"`
+	V5    string `gorm:"size:100;uniqueIndex:idx_casbin_rule"`
+}
+
+func (runtimeCasbinRule) TableName() string { return "casbin_rule" }
+
+func seedBellRuleAlertAccess(tx *gorm.DB) error {
+	// db.sql contains explicit primary keys, so PostgreSQL sequences can lag
+	// behind the imported baseline data. Align them before allocating any new
+	// menu, API or role IDs.
+	if err := tx.Exec(`SELECT setval(pg_get_serial_sequence('sys_menu','menu_id'), GREATEST((SELECT max(menu_id) FROM sys_menu),1));
+        SELECT setval(pg_get_serial_sequence('sys_api','id'), GREATEST((SELECT max(id) FROM sys_api),1));
+        SELECT setval(pg_get_serial_sequence('sys_role','role_id'), GREATEST((SELECT max(role_id) FROM sys_role),1))`).Error; err != nil {
+		return err
+	}
+
+	root, err := insertMenu(tx, 0, "BellWarning", "预警中心", "warning", "/bell", "M", "", "", "Layout", 1)
+	if err != nil {
+		return err
+	}
+	alerts, err := insertMenu(tx, root.ID, "BellAlerts", "预警管理", "bell", "alerts", "C", "bell:alert:list", "", "/bell/alerts/index", 1)
+	if err != nil {
+		return err
+	}
+	events, err := insertMenu(tx, root.ID, "BellEvents", "事件查询", "list", "events", "C", "bell:event:list", "", "/bell/events/index", 2)
+	if err != nil {
+		return err
+	}
+	rules, err := insertMenu(tx, root.ID, "BellRules", "规则配置", "guide", "rules", "C", "bell:rule:list", "", "/bell/rules/index", 3)
+	if err != nil {
+		return err
+	}
+	addRule, err := insertMenu(tx, rules.ID, "", "新增规则", "", "", "F", "bell:rule:add", "POST", "", 1)
+	if err != nil {
+		return err
+	}
+	editRule, err := insertMenu(tx, rules.ID, "", "修改规则", "", "", "F", "bell:rule:edit", "PUT", "", 2)
+	if err != nil {
+		return err
+	}
+
+	apiSpecs := []struct{ title, path, action string }{
+		{"预警列表", "/api/v1/bell/alerts", "GET"}, {"预警详情", "/api/v1/bell/alerts/:id", "GET"},
+		{"事件列表", "/api/v1/bell/events", "GET"}, {"事件详情", "/api/v1/bell/events/:id", "GET"},
+		{"事件规则结果", "/api/v1/bell/events/:id/rule-results", "GET"},
+		{"规则列表", "/api/v1/bell/rules", "GET"}, {"新增规则", "/api/v1/bell/rules", "POST"},
+		{"修改规则", "/api/v1/bell/rules/:id", "PUT"}, {"启停规则", "/api/v1/bell/rules/:id/enabled", "PUT"},
+	}
+	apis := make([]apiSeed, 0, len(apiSpecs))
+	for _, spec := range apiSpecs {
+		seed, seedErr := insertAPI(tx, spec.title, spec.path, spec.action)
+		if seedErr != nil {
+			return seedErr
+		}
+		apis = append(apis, seed)
+	}
+	links := map[int][]apiSeed{
+		alerts.ID: {apis[0], apis[1]}, events.ID: {apis[2], apis[3], apis[4]}, rules.ID: {apis[5]},
+		addRule.ID: {apis[6]}, editRule.ID: {apis[7], apis[8]},
+	}
+	for menuID, menuAPIs := range links {
+		for _, item := range menuAPIs {
+			if err := tx.Exec("INSERT INTO sys_menu_api_rule(sys_menu_menu_id, sys_api_id) VALUES(?, ?) ON CONFLICT DO NOTHING", menuID, item.ID).Error; err != nil {
+				return err
+			}
+		}
+	}
+
+	var operatorRoleID int
+	if err := tx.Raw("SELECT role_id FROM sys_role WHERE role_key = 'operator' AND deleted_at IS NULL ORDER BY role_id LIMIT 1").Scan(&operatorRoleID).Error; err != nil {
+		return err
+	}
+	if operatorRoleID == 0 {
+		if err := tx.Raw(`INSERT INTO sys_role(role_name,status,role_key,role_sort,flag,remark,admin,data_scope,create_by,update_by,created_at,updated_at)
+            VALUES('处置员','2','operator',2,'','仅访问 Bell 预警处理入口',false,'',1,1,now(),now())
+            RETURNING role_id`).Scan(&operatorRoleID).Error; err != nil {
+			return err
+		}
+	}
+	for _, menu := range []menuSeed{root, alerts, events, rules} {
+		if err := tx.Exec("INSERT INTO sys_role_menu(role_id, menu_id) VALUES(?, ?) ON CONFLICT DO NOTHING", operatorRoleID, menu.ID).Error; err != nil {
+			return err
+		}
+	}
+	for _, item := range apis {
+		if item.Action != "GET" {
+			continue
+		}
+		if err := tx.Exec("INSERT INTO casbin_rule(ptype,v0,v1,v2,v3,v4,v5) VALUES('p','operator',?,?, '', '', '') ON CONFLICT DO NOTHING", item.Path, item.Action).Error; err != nil {
+			return err
+		}
+	}
+	return nil
+}
+
+func insertMenu(tx *gorm.DB, parentID int, name, title, icon, path, menuType, permission, action, component string, sort int) (menuSeed, error) {
+	var id int
+	err := tx.Raw(`INSERT INTO sys_menu(menu_name,title,icon,path,paths,menu_type,action,permission,parent_id,no_cache,breadcrumb,component,sort,visible,is_frame,create_by,update_by,created_at,updated_at)
+        VALUES(?,?,?,?, '',?,?,?,?,false,'',?,?, '0','1',1,1,now(),now()) RETURNING menu_id`,
+		name, title, icon, path, menuType, action, permission, parentID, component, sort).Scan(&id).Error
+	if err != nil {
+		return menuSeed{}, err
+	}
+	paths := fmt.Sprintf("/0/%d", id)
+	if parentID != 0 {
+		var parentPaths string
+		if err = tx.Raw("SELECT paths FROM sys_menu WHERE menu_id = ?", parentID).Scan(&parentPaths).Error; err != nil {
+			return menuSeed{}, err
+		}
+		paths = fmt.Sprintf("%s/%d", parentPaths, id)
+	}
+	if err = tx.Exec("UPDATE sys_menu SET paths = ? WHERE menu_id = ?", paths, id).Error; err != nil {
+		return menuSeed{}, err
+	}
+	return menuSeed{ID: id, Permission: permission}, nil
+}
+
+func insertAPI(tx *gorm.DB, title, path, action string) (apiSeed, error) {
+	var id int
+	err := tx.Raw(`INSERT INTO sys_api(handle,title,path,type,action,created_at,updated_at,create_by,update_by)
+        VALUES('',?,?, 'BUS',?,now(),now(),1,1) RETURNING id`, title, path, action).Scan(&id).Error
+	return apiSeed{ID: id, Path: path, Action: action}, err
+}

Bell/server/tests/bell_event/normalize_test.go

@@ -0,0 +1,61 @@
+package bell_event_test
+
+import (
+	"errors"
+	"testing"
+	"time"
+
+	"go-admin/app/bell/event"
+)
+
+func validCommand() event.Command {
+	return event.Command{
+		ProducerID: " bell.synthetic ", SourceEventID: " test-001 ", EventType: " danger_area_entered ",
+		OccurredAt: time.Date(2026, 8, 29, 0, 0, 0, 0, time.FixedZone("CST", 8*60*60)),
+		Location:   " 东门 ", Severity: " HIGH ", Attributes: map[string]any{"z": 2, "a": "first"},
+	}
+}
+
+func TestNormalizeIsDeterministicAndTrimsBusinessFields(t *testing.T) {
+	first, err := event.Normalize(validCommand())
+	if err != nil {
+		t.Fatal(err)
+	}
+	secondCommand := validCommand()
+	secondCommand.Attributes = map[string]any{"a": "first", "z": 2}
+	second, err := event.Normalize(secondCommand)
+	if err != nil {
+		t.Fatal(err)
+	}
+	if first.Digest != second.Digest || string(first.Payload) != string(second.Payload) {
+		t.Fatalf("normalized payload is not deterministic: %s != %s", first.Payload, second.Payload)
+	}
+	if first.Command.ProducerID != "bell.synthetic" || first.Command.Severity != "high" {
+		t.Fatalf("fields were not normalized: %#v", first.Command)
+	}
+	if first.Command.OccurredAt.Location() != time.UTC {
+		t.Fatalf("occurredAt was not converted to UTC: %v", first.Command.OccurredAt)
+	}
+}
+
+func TestNormalizeRejectsUnsafeOrInvalidInput(t *testing.T) {
+	tests := []struct {
+		name   string
+		mutate func(*event.Command)
+	}{
+		{name: "missing source id", mutate: func(c *event.Command) { c.SourceEventID = " " }},
+		{name: "unknown severity", mutate: func(c *event.Command) { c.Severity = "urgent" }},
+		{name: "newline in location", mutate: func(c *event.Command) { c.Location = "东门\nsecret" }},
+		{name: "unsafe evidence path", mutate: func(c *event.Command) { value := `C:\\secret.jpg`; c.EvidenceRef = &value }},
+		{name: "oversized attributes", mutate: func(c *event.Command) { c.Attributes = map[string]any{"blob": string(make([]byte, 49*1024))} }},
+	}
+	for _, test := range tests {
+		t.Run(test.name, func(t *testing.T) {
+			command := validCommand()
+			test.mutate(&command)
+			if _, err := event.Normalize(command); !errors.Is(err, event.ErrInvalid) {
+				t.Fatalf("expected ErrInvalid, got %v", err)
+			}
+		})
+	}
+}

Bell/server/tests/bell_event/synthetic_test.go

@@ -0,0 +1,42 @@
+package bell_event_test
+
+import (
+	"testing"
+
+	"github.com/gin-gonic/gin"
+	jwt "github.com/go-admin-team/go-admin-core/sdk/pkg/jwtauth"
+
+	"go-admin/app/bell/synthetic"
+)
+
+func TestSyntheticEnabledRequiresExplicitNonProductionOptIn(t *testing.T) {
+	getenv := func(name string) string {
+		if name == synthetic.EnabledEnv {
+			return "true"
+		}
+		return ""
+	}
+	if synthetic.Enabled("prod", getenv) || synthetic.Enabled("production", getenv) {
+		t.Fatal("synthetic route must stay disabled in production even when the flag is set")
+	}
+	if !synthetic.Enabled("dev", getenv) {
+		t.Fatal("explicit development opt-in should enable the synthetic route")
+	}
+	if synthetic.Enabled("dev", func(string) string { return "" }) {
+		t.Fatal("synthetic route must default to disabled")
+	}
+}
+
+func TestSyntheticAdministratorCheckUsesJWTClaims(t *testing.T) {
+	gin.SetMode(gin.TestMode)
+	admin, _ := gin.CreateTestContext(nil)
+	admin.Set(jwt.JwtPayloadKey, jwt.MapClaims{jwt.RoleKey: "admin"})
+	if !synthetic.IsAdministrator(admin) {
+		t.Fatal("admin role should be authorized")
+	}
+	operator, _ := gin.CreateTestContext(nil)
+	operator.Set(jwt.JwtPayloadKey, jwt.MapClaims{jwt.RoleKey: "operator"})
+	if synthetic.IsAdministrator(operator) {
+		t.Fatal("non-admin role must be rejected")
+	}
+}

Bell/server/tests/bell_rule_alert/integration_test.go

@@ -0,0 +1,211 @@
+package bell_rule_alert_test
+
+import (
+	"context"
+	"encoding/json"
+	"fmt"
+	"os"
+	"testing"
+	"time"
+
+	"gorm.io/driver/postgres"
+	"gorm.io/gorm"
+
+	adminmodels "go-admin/app/admin/models"
+	"go-admin/app/bell/alert"
+	"go-admin/app/bell/evaluation"
+	"go-admin/app/bell/event"
+	"go-admin/app/bell/receipt"
+	"go-admin/app/bell/rule"
+)
+
+func TestPostgresRuleEvaluationAndAlertProjection(t *testing.T) {
+	dsn := os.Getenv("BELL_RULE_ALERT_TEST_DATABASE_URL")
+	if dsn == "" {
+		t.Skip("set BELL_RULE_ALERT_TEST_DATABASE_URL to run the isolated PostgreSQL test")
+	}
+	db, err := gorm.Open(postgres.Open(dsn), &gorm.Config{})
+	if err != nil {
+		t.Fatal(err)
+	}
+	ctx := context.Background()
+	rules := rule.NewService(db)
+	events := event.NewService(db)
+	evaluations := evaluation.NewService(db)
+	alerts := alert.NewService(db)
+	assertOperatorAccess(t, db)
+	createOperatorUser(t, db)
+
+	eventType := "danger_area_entered"
+	location := "东门"
+	first, err := rules.Create(ctx, rule.WriteInput{Code: "area-high", Name: "高风险区域", EventType: &eventType, MinimumSeverity: "high", LocationContains: &location}, 1)
+	if err != nil {
+		t.Fatal(err)
+	}
+	second, err := rules.Create(ctx, rule.WriteInput{Code: "all-high", Name: "全局高风险", MinimumSeverity: "high"}, 1)
+	if err != nil {
+		t.Fatal(err)
+	}
+	otherEventType := "fire_detected"
+	_, err = rules.Create(ctx, rule.WriteInput{Code: "critical-fire", Name: "仅严重火情", EventType: &otherEventType, MinimumSeverity: "critical"}, 1)
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	created := ingest(t, events, "event-001", "东门 A 区", "high")
+	result, err := evaluations.ForEvent(ctx, created.Event.ID)
+	if err != nil {
+		t.Fatal(err)
+	}
+	if len(result.Evaluations) != 3 || len(result.Alerts) != 2 {
+		t.Fatalf("expected 3 evaluations and 2 alerts, got %d and %d", len(result.Evaluations), len(result.Alerts))
+	}
+	matched, unmatched := 0, 0
+	for _, item := range result.Evaluations {
+		if item.Matched {
+			matched++
+		} else if item.Explanation != "" {
+			unmatched++
+		}
+	}
+	if matched != 2 || unmatched != 1 {
+		t.Fatalf("unexpected match explanations: matched=%d unmatched=%d", matched, unmatched)
+	}
+
+	replay := ingest(t, events, "event-001", "东门 A 区", "high")
+	if !replay.Duplicate || replay.Event.ID != created.Event.ID {
+		t.Fatalf("idempotent replay created another fact: %#v", replay)
+	}
+	assertCount(t, db, "bell_rule_evaluations", 3)
+	assertCount(t, db, "bell_alerts", 2)
+
+	secondEvent := ingest(t, events, "event-002", "东门 A 区", "critical")
+	assertCount(t, db, "bell_alerts", 2)
+	items, total, err := alerts.List(ctx, alert.PageQuery{PageIndex: 1, PageSize: 20, Status: "open"})
+	if err != nil || total != 2 || len(items) != 2 {
+		t.Fatalf("unexpected alert list: total=%d len=%d err=%v", total, len(items), err)
+	}
+	for _, item := range items {
+		if item.EventCount != 2 || item.Status != "open" || item.Severity != "critical" {
+			t.Fatalf("open alert did not aggregate and escalate: %#v", item)
+		}
+		detail, detailErr := alerts.Get(ctx, item.ID)
+		if detailErr != nil || len(detail.Events) != 2 || len(detail.Matches) != 2 {
+			t.Fatalf("event-alert navigation is incomplete: events=%d matches=%d err=%v", len(detail.Events), len(detail.Matches), detailErr)
+		}
+	}
+
+	updated, err := rules.Update(ctx, first.ID, rule.WriteInput{Name: "高风险区域（更新）", EventType: &eventType, MinimumSeverity: "medium", LocationContains: &location}, 1)
+	if err != nil || updated.Version != 2 {
+		t.Fatalf("rule version was not incremented: version=%d err=%v", updated.Version, err)
+	}
+	if _, err = rules.SetEnabled(ctx, second.ID, false, 1); err != nil {
+		t.Fatal(err)
+	}
+	thirdEvent := ingest(t, events, "event-003", "东门 B 区", "medium")
+	thirdResults, err := evaluations.ForEvent(ctx, thirdEvent.Event.ID)
+	if err != nil {
+		t.Fatal(err)
+	}
+	if len(thirdResults.Evaluations) != 2 || len(thirdResults.Alerts) != 1 {
+		t.Fatalf("disabled rule was evaluated: evaluations=%d alerts=%d", len(thirdResults.Evaluations), len(thirdResults.Alerts))
+	}
+	var snapshot struct {
+		Version int `json:"version"`
+	}
+	for _, item := range thirdResults.Evaluations {
+		if item.RuleID == first.ID {
+			if err = json.Unmarshal(item.RuleSnapshot, &snapshot); err != nil || item.RuleVersion != 2 || snapshot.Version != 2 {
+				t.Fatalf("versioned rule snapshot missing: item=%#v snapshot=%#v err=%v", item, snapshot, err)
+			}
+		}
+	}
+
+	if err = db.Model(&evaluation.Evaluation{}).Where("event_id = ? AND rule_id = ?", created.Event.ID, first.ID).Update("explanation", "tampered").Error; err == nil {
+		t.Fatal("immutable evaluation update unexpectedly succeeded")
+	}
+
+	if err = db.Exec(`CREATE FUNCTION bell_test_reject_alert() RETURNS trigger LANGUAGE plpgsql AS $$ BEGIN RAISE EXCEPTION 'forced alert failure'; END $$`).Error; err != nil {
+		t.Fatal(err)
+	}
+	if err = db.Exec(`CREATE TRIGGER bell_test_reject_alert BEFORE INSERT ON bell_alerts FOR EACH ROW EXECUTE FUNCTION bell_test_reject_alert()`).Error; err != nil {
+		t.Fatal(err)
+	}
+	failedID := "event-rollback"
+	_, ingestErr := events.Ingest(ctx, eventCommand(failedID, "东门 C 区", "high"), 1)
+	if ingestErr == nil {
+		t.Fatal("forced alert failure did not roll back Event ingest")
+	}
+	var eventCount, receiptCount int64
+	db.Model(&event.Event{}).Where("source_event_id = ?", failedID).Count(&eventCount)
+	db.Model(&receipt.Receipt{}).Where("source_event_id = ?", failedID).Count(&receiptCount)
+	if eventCount != 0 || receiptCount != 0 {
+		t.Fatalf("transaction failure left partial facts: events=%d receipts=%d", eventCount, receiptCount)
+	}
+	if err = db.Exec(`DROP TRIGGER bell_test_reject_alert ON bell_alerts; DROP FUNCTION bell_test_reject_alert()`).Error; err != nil {
+		t.Fatal(err)
+	}
+
+	if secondEvent.Event.ID == thirdEvent.Event.ID {
+		t.Fatal("independent Events unexpectedly share an id")
+	}
+}
+
+func ingest(t *testing.T, service event.Service, sourceID, location, severity string) event.Result {
+	t.Helper()
+	result, err := service.Ingest(context.Background(), eventCommand(sourceID, location, severity), 1)
+	if err != nil {
+		t.Fatal(err)
+	}
+	return result
+}
+
+func eventCommand(sourceID, location, severity string) event.Command {
+	return event.Command{ProducerID: "bell.rule-test", SourceEventID: sourceID, EventType: "danger_area_entered", OccurredAt: time.Date(2026, 8, 29, 0, 0, 0, 0, time.UTC), Location: location, Severity: severity, Attributes: map[string]any{"test": true}}
+}
+
+func assertCount(t *testing.T, db *gorm.DB, table string, want int64) {
+	t.Helper()
+	var got int64
+	if err := db.Table(table).Count(&got).Error; err != nil {
+		t.Fatal(err)
+	}
+	if got != want {
+		t.Fatal(fmt.Sprintf("%s count: got %d want %d", table, got, want))
+	}
+}
+
+func assertOperatorAccess(t *testing.T, db *gorm.DB) {
+	t.Helper()
+	var menuCount, readPolicyCount, writePolicyCount int64
+	if err := db.Table("sys_role_menu rm").Joins("JOIN sys_role r ON r.role_id = rm.role_id").
+		Joins("JOIN sys_menu m ON m.menu_id = rm.menu_id").
+		Where("r.role_key = ? AND m.path IN ?", "operator", []string{"/bell", "alerts", "events", "rules"}).Count(&menuCount).Error; err != nil {
+		t.Fatal(err)
+	}
+	if err := db.Table("casbin_rule").Where("v0 = ? AND v2 = ?", "operator", "GET").Count(&readPolicyCount).Error; err != nil {
+		t.Fatal(err)
+	}
+	if err := db.Table("casbin_rule").Where("v0 = ? AND v2 <> ?", "operator", "GET").Count(&writePolicyCount).Error; err != nil {
+		t.Fatal(err)
+	}
+	if menuCount != 4 || readPolicyCount != 6 || writePolicyCount != 0 {
+		t.Fatalf("operator access is not read-only and minimal: menus=%d reads=%d writes=%d", menuCount, readPolicyCount, writePolicyCount)
+	}
+}
+
+func createOperatorUser(t *testing.T, db *gorm.DB) {
+	t.Helper()
+	password := os.Getenv("BELL_RULE_ALERT_OPERATOR_PASSWORD")
+	if password == "" {
+		t.Skip("set BELL_RULE_ALERT_OPERATOR_PASSWORD for the HTTP RBAC continuation")
+	}
+	var roleID int
+	if err := db.Table("sys_role").Select("role_id").Where("role_key = ?", "operator").Scan(&roleID).Error; err != nil || roleID == 0 {
+		t.Fatalf("load operator role: id=%d err=%v", roleID, err)
+	}
+	user := adminmodels.SysUser{Username: "bell_132_operator", Password: password, NickName: "Bell 处置员", RoleId: roleID, DeptId: 1, PostId: 1, Status: "2"}
+	if err := db.Create(&user).Error; err != nil {
+		t.Fatal(err)
+	}
+}

Bell/server/tests/bell_rule_alert/run-postgres.ps1

@@ -0,0 +1,143 @@
+[CmdletBinding()]
+param(
+    [string]$PostgresBin = 'D:\pgsql17\bin'
+)
+
+Set-StrictMode -Version 3.0
+$ErrorActionPreference = 'Stop'
+$pgStarted = $false
+$server = $null
+$testRoot = Join-Path ([IO.Path]::GetTempPath()) ('yovision-bell-132-' + [guid]::NewGuid().ToString('N'))
+$pgData = Join-Path $testRoot 'postgres'
+$pgLog = Join-Path $testRoot 'postgres.log'
+$pgCtlOut = Join-Path $testRoot 'pg-ctl.out.log'
+$pgCtlErr = Join-Path $testRoot 'pg-ctl.err.log'
+$serverOut = Join-Path $testRoot 'bell.out.log'
+$serverErr = Join-Path $testRoot 'bell.err.log'
+$serverExe = Join-Path $testRoot 'bell-server.exe'
+$serverRoot = (Resolve-Path (Join-Path $PSScriptRoot '..\..')).Path
+
+function Get-FreeTcpPort {
+    $listener = [Net.Sockets.TcpListener]::new([Net.IPAddress]::Loopback, 0)
+    try {
+        $listener.Start()
+        return ([Net.IPEndPoint]$listener.LocalEndpoint).Port
+    } finally {
+        $listener.Stop()
+    }
+}
+
+function Wait-Tcp([int]$Port, [bool]$Open, [int]$Attempts = 120) {
+    for ($attempt = 0; $attempt -lt $Attempts; $attempt++) {
+        $client = [Net.Sockets.TcpClient]::new()
+        try {
+            $connected = $client.ConnectAsync('127.0.0.1', $Port).Wait(250) -and $client.Connected
+        } catch {
+            $connected = $false
+        } finally {
+            $client.Dispose()
+        }
+        if ($connected -eq $Open) { return }
+        Start-Sleep -Milliseconds 250
+    }
+    throw "TCP port $Port did not reach open=$Open"
+}
+
+function Wait-Health([string]$BaseUrl) {
+    for ($attempt = 0; $attempt -lt 100; $attempt++) {
+        try {
+            $health = Invoke-RestMethod -Uri "$BaseUrl/healthz" -TimeoutSec 2 -NoProxy
+            if ($health.status -eq 'ok' -and $health.service -eq 'bell') { return }
+        } catch {}
+        Start-Sleep -Milliseconds 300
+    }
+    throw 'Bell health endpoint did not become ready'
+}
+
+New-Item -ItemType Directory -Path $testRoot | Out-Null
+$pgPort = Get-FreeTcpPort
+$bellPort = Get-FreeTcpPort
+$baseUrl = "http://127.0.0.1:$bellPort"
+$database = 'bell_132'
+
+try {
+    foreach ($required in @('initdb.exe', 'pg_ctl.exe', 'createdb.exe')) {
+        $path = Join-Path $PostgresBin $required
+        if (-not (Test-Path -LiteralPath $path -PathType Leaf)) { throw "Missing PostgreSQL tool: $path" }
+    }
+
+    & (Join-Path $PostgresBin 'initdb.exe') -D $pgData -U postgres -A trust --encoding=UTF8 --no-locale | Out-Null
+    if ($LASTEXITCODE -ne 0) { throw 'isolated PostgreSQL initdb failed' }
+    $pgArguments = "-D `"$pgData`" -l `"$pgLog`" -o `"-p $pgPort -h 127.0.0.1`" start"
+    Start-Process -FilePath (Join-Path $PostgresBin 'pg_ctl.exe') -ArgumentList $pgArguments -RedirectStandardOutput $pgCtlOut -RedirectStandardError $pgCtlErr -WindowStyle Hidden | Out-Null
+    Wait-Tcp -Port $pgPort -Open $true
+    $pgStarted = $true
+    & (Join-Path $PostgresBin 'createdb.exe') -h 127.0.0.1 -p $pgPort -U postgres $database
+    if ($LASTEXITCODE -ne 0) { throw 'isolated Bell database creation failed' }
+
+    $env:GOTOOLCHAIN = 'go1.26.5'
+    $env:BELL_DATABASE_URL = "host=127.0.0.1 port=$pgPort user=postgres dbname=$database sslmode=disable"
+    $env:BELL_RULE_ALERT_TEST_DATABASE_URL = $env:BELL_DATABASE_URL
+    $env:BELL_JWT_SECRET = [guid]::NewGuid().ToString('N') + [guid]::NewGuid().ToString('N')
+    $env:BELL_BOOTSTRAP_USERNAME = 'bell_132_admin'
+    $env:BELL_BOOTSTRAP_PASSWORD = [guid]::NewGuid().ToString('N')
+    $env:BELL_RULE_ALERT_OPERATOR_PASSWORD = [guid]::NewGuid().ToString('N')
+    $env:BELL_HOST = '127.0.0.1'
+    $env:BELL_PORT = $bellPort.ToString()
+
+    Push-Location $serverRoot
+    try {
+        go run . migrate -c config/settings.demo.yml *> (Join-Path $testRoot 'migrate.log')
+        if ($LASTEXITCODE -ne 0) { throw "Bell migration failed; see $(Join-Path $testRoot 'migrate.log')" }
+        go test ./tests/bell_rule_alert -count=1 -v
+        if ($LASTEXITCODE -ne 0) { throw 'Bell rule-alert integration test failed' }
+        go build -o $serverExe .
+        if ($LASTEXITCODE -ne 0) { throw 'Bell build failed' }
+    } finally {
+        Pop-Location
+    }
+
+    $server = Start-Process -FilePath $serverExe -ArgumentList @('server', '-c', 'config/settings.demo.yml') -WorkingDirectory $serverRoot -RedirectStandardOutput $serverOut -RedirectStandardError $serverErr -WindowStyle Hidden -PassThru
+    Wait-Health $baseUrl
+
+    $unauthorized = Invoke-RestMethod -Uri "$baseUrl/api/v1/bell/rules" -TimeoutSec 5 -NoProxy
+    if ([int]$unauthorized.code -ne 401) { throw "unauthenticated rule list returned code $($unauthorized.code)" }
+
+    $adminLoginBody = @{ username = $env:BELL_BOOTSTRAP_USERNAME; password = $env:BELL_BOOTSTRAP_PASSWORD; code = '0'; uuid = '0' } | ConvertTo-Json -Compress
+    $adminLogin = Invoke-RestMethod -Method Post -Uri "$baseUrl/api/v1/login" -ContentType 'application/json' -Body $adminLoginBody -TimeoutSec 5 -NoProxy
+    if ([int]$adminLogin.code -ne 200) { throw 'Bell administrator login failed' }
+    $adminHeaders = @{ Authorization = "Bearer $($adminLogin.token)" }
+    $adminRule = @{ code = 'http-admin'; name = '管理员 HTTP 规则'; eventType = $null; minimumSeverity = 'high'; locationContains = $null } | ConvertTo-Json -Compress
+    $adminWrite = Invoke-RestMethod -Method Post -Uri "$baseUrl/api/v1/bell/rules" -Headers $adminHeaders -ContentType 'application/json; charset=utf-8' -Body $adminRule -TimeoutSec 5 -NoProxy
+    if ([int]$adminWrite.code -ne 200 -or [int]$adminWrite.data.version -ne 1) { throw 'administrator rule create failed' }
+
+    $operatorLoginBody = @{ username = 'bell_132_operator'; password = $env:BELL_RULE_ALERT_OPERATOR_PASSWORD; code = '0'; uuid = '0' } | ConvertTo-Json -Compress
+    $operatorLogin = Invoke-RestMethod -Method Post -Uri "$baseUrl/api/v1/login" -ContentType 'application/json' -Body $operatorLoginBody -TimeoutSec 5 -NoProxy
+    if ([int]$operatorLogin.code -ne 200) { throw 'Bell operator login failed' }
+    $operatorHeaders = @{ Authorization = "Bearer $($operatorLogin.token)" }
+    foreach ($path in @('/api/v1/bell/rules','/api/v1/bell/events','/api/v1/bell/alerts')) {
+        $read = Invoke-RestMethod -Uri "$baseUrl$path" -Headers $operatorHeaders -TimeoutSec 5 -NoProxy
+        if ([int]$read.code -ne 200) { throw "operator read $path returned code $($read.code)" }
+    }
+    $operatorWrite = Invoke-RestMethod -Method Post -Uri "$baseUrl/api/v1/bell/rules" -Headers $operatorHeaders -ContentType 'application/json' -Body $adminRule -TimeoutSec 5 -NoProxy
+    if ([int]$operatorWrite.code -ne 403) { throw "operator rule write returned code $($operatorWrite.code)" }
+    $menu = Invoke-RestMethod -Uri "$baseUrl/api/v1/menurole" -Headers $operatorHeaders -TimeoutSec 5 -NoProxy
+    $menuJson = $menu.data | ConvertTo-Json -Depth 20 -Compress
+    foreach ($title in @('预警中心','预警管理','事件查询','规则配置')) {
+        if (-not $menuJson.Contains($title)) { throw "operator menu is missing $title" }
+    }
+    if ($menuJson.Contains('系统管理') -or $menuJson.Contains('开发工具')) { throw 'operator menu exposed unrelated GoAdmin modules' }
+    Write-Output 'BELL_132_HTTP unauthenticated=401 admin_write=200 operator_reads=200 operator_write=403 minimal_menu=true'
+} finally {
+    if ($null -ne $server -and -not $server.HasExited) {
+        Stop-Process -Id $server.Id -Force
+        $server.WaitForExit(5000) | Out-Null
+    }
+    if ($pgStarted) {
+        & (Join-Path $PostgresBin 'pg_ctl.exe') -D $pgData -m fast stop *> (Join-Path $testRoot 'pg-stop.log')
+    }
+    foreach ($name in @('BELL_DATABASE_URL','BELL_RULE_ALERT_TEST_DATABASE_URL','BELL_RULE_ALERT_OPERATOR_PASSWORD','BELL_JWT_SECRET','BELL_BOOTSTRAP_USERNAME','BELL_BOOTSTRAP_PASSWORD','BELL_HOST','BELL_PORT')) {
+        Remove-Item "Env:$name" -ErrorAction SilentlyContinue
+    }
+    Write-Verbose "Bell #132 temporary artifacts: $testRoot"
+}

Bell/server/tests/bell_rule_alert/validation_test.go

@@ -0,0 +1,55 @@
+package bell_rule_alert_test
+
+import (
+	"errors"
+	"testing"
+
+	"go-admin/app/bell/rule"
+)
+
+func TestRuleNormalizeTrimsAndNormalizesFields(t *testing.T) {
+	eventType := " danger_area_entered "
+	location := " 东门 "
+	got, err := rule.Normalize(rule.WriteInput{
+		Code: " AREA_HIGH ", Name: " 高风险区域 ", EventType: &eventType,
+		MinimumSeverity: " HIGH ", LocationContains: &location,
+	}, true)
+	if err != nil {
+		t.Fatal(err)
+	}
+	if got.Code != "area_high" || got.Name != "高风险区域" || got.MinimumSeverity != "high" {
+		t.Fatalf("unexpected normalized rule: %#v", got)
+	}
+	if got.EventType == nil || *got.EventType != "danger_area_entered" || got.LocationContains == nil || *got.LocationContains != "东门" {
+		t.Fatalf("optional fields were not normalized: %#v", got)
+	}
+}
+
+func TestRuleNormalizeRejectsInvalidInput(t *testing.T) {
+	tests := []struct {
+		name  string
+		input rule.WriteInput
+	}{
+		{name: "invalid code", input: rule.WriteInput{Code: "Bad Code", Name: "规则", MinimumSeverity: "low"}},
+		{name: "missing name", input: rule.WriteInput{Code: "valid-code", Name: " ", MinimumSeverity: "low"}},
+		{name: "unknown severity", input: rule.WriteInput{Code: "valid-code", Name: "规则", MinimumSeverity: "urgent"}},
+		{name: "control character", input: rule.WriteInput{Code: "valid-code", Name: "规则\n泄露", MinimumSeverity: "low"}},
+	}
+	for _, test := range tests {
+		t.Run(test.name, func(t *testing.T) {
+			if _, err := rule.Normalize(test.input, true); !errors.Is(err, rule.ErrInvalid) {
+				t.Fatalf("expected ErrInvalid, got %v", err)
+			}
+		})
+	}
+}
+
+func TestRuleUpdateKeepsImmutableCodeOutsideInput(t *testing.T) {
+	got, err := rule.Normalize(rule.WriteInput{Code: "ignored invalid code", Name: "更新后规则", MinimumSeverity: "medium"}, false)
+	if err != nil {
+		t.Fatal(err)
+	}
+	if got.Name != "更新后规则" || got.MinimumSeverity != "medium" {
+		t.Fatalf("unexpected update normalization: %#v", got)
+	}
+}

Bell/ui/src/api/bell/alert.js

@@ -0,0 +1,9 @@
+import request from '@/utils/request'
+
+export function listAlerts(query) {
+  return request({ url: '/api/v1/bell/alerts', method: 'get', params: query })
+}
+
+export function getAlert(id) {
+  return request({ url: `/api/v1/bell/alerts/${id}`, method: 'get' })
+}

Bell/ui/src/api/bell/event.js

@@ -0,0 +1,13 @@
+import request from '@/utils/request'
+
+export function listEvents(query) {
+  return request({ url: '/api/v1/bell/events', method: 'get', params: query })
+}
+
+export function getEvent(id) {
+  return request({ url: `/api/v1/bell/events/${id}`, method: 'get' })
+}
+
+export function getEventRuleResults(id) {
+  return request({ url: `/api/v1/bell/events/${id}/rule-results`, method: 'get' })
+}

Bell/ui/src/api/bell/rule.js

@@ -0,0 +1,17 @@
+import request from '@/utils/request'
+
+export function listRules(query) {
+  return request({ url: '/api/v1/bell/rules', method: 'get', params: query })
+}
+
+export function createRule(data) {
+  return request({ url: '/api/v1/bell/rules', method: 'post', data })
+}
+
+export function updateRule(id, data) {
+  return request({ url: `/api/v1/bell/rules/${id}`, method: 'put', data })
+}
+
+export function setRuleEnabled(id, enabled) {
+  return request({ url: `/api/v1/bell/rules/${id}/enabled`, method: 'put', data: { enabled }})
+}

Bell/ui/src/views/bell/alerts/index.vue

@@ -0,0 +1,91 @@
+<template>
+  <BasicLayout>
+    <template #wrapper>
+      <el-card class="box-card">
+        <template #header><div class="page-heading"><h2>预警管理</h2><p>查看待处理预警及其关联事件；开始处理和完成操作将在下一阶段提供。</p></div></template>
+        <el-form ref="queryForm" :model="query" :inline="true">
+          <el-form-item label="状态" prop="status"><el-select v-model="query.status" clearable placeholder="全部状态" style="width:130px"><el-option label="待处理" value="open" /></el-select></el-form-item>
+          <el-form-item label="风险" prop="severity"><el-select v-model="query.severity" clearable placeholder="全部风险" style="width:130px"><el-option v-for="item in severities" :key="item.value" :label="item.label" :value="item.value" /></el-select></el-form-item>
+          <el-form-item label="地点" prop="location"><el-input v-model="query.location" clearable placeholder="请输入地点" @keyup.enter="search" /></el-form-item>
+          <el-form-item><el-button type="primary" @click="search">搜索</el-button><el-button @click="reset">重置</el-button></el-form-item>
+        </el-form>
+        <el-alert v-if="error" :title="error" type="error" show-icon :closable="false" class="state-alert" />
+        <el-table v-loading="loading" :data="items" border row-key="id" @row-dblclick="openDetail">
+          <el-table-column prop="createdAt" label="创建时间" min-width="180"><template #default="scope">{{ parseTime(scope.row.createdAt) }}</template></el-table-column>
+          <el-table-column prop="summary" label="预警事项" min-width="200" show-overflow-tooltip />
+          <el-table-column prop="location" label="地点" min-width="140" show-overflow-tooltip />
+          <el-table-column label="风险" width="90"><template #default="scope"><el-tag :type="severityType(scope.row.severity)">{{ severityName(scope.row.severity) }}</el-tag></template></el-table-column>
+          <el-table-column label="状态" width="90"><template #default><el-tag type="danger">待处理</el-tag></template></el-table-column>
+          <el-table-column prop="eventCount" label="关联事件" width="100" />
+          <el-table-column label="操作" width="90"><template #default="scope"><el-button type="primary" link @click="openDetail(scope.row)">详情</el-button></template></el-table-column>
+          <template #empty><el-empty description="暂无预警" /></template>
+        </el-table>
+        <pagination v-show="total > 0" v-model:current-page="query.pageIndex" v-model:page-size="query.pageSize" :total="total" @pagination="load" />
+      </el-card>
+
+      <el-drawer v-model="drawer" title="预警详情" size="min(720px, 100%)">
+        <div v-loading="detailLoading">
+          <el-alert v-if="detailError" :title="detailError" type="error" show-icon :closable="false" class="state-alert" />
+          <template v-if="detail">
+            <el-descriptions :column="1" border>
+              <el-descriptions-item label="发生事项">{{ detail.alert.summary }}</el-descriptions-item>
+              <el-descriptions-item label="地点">{{ detail.alert.location }}</el-descriptions-item>
+              <el-descriptions-item label="紧急程度">{{ severityName(detail.alert.severity) }}</el-descriptions-item>
+              <el-descriptions-item label="状态">待处理</el-descriptions-item>
+              <el-descriptions-item label="命中规则">{{ detail.alert.ruleName }}</el-descriptions-item>
+              <el-descriptions-item label="预警编号">{{ detail.alert.id }}</el-descriptions-item>
+            </el-descriptions>
+            <h3>关联事件</h3>
+            <el-table :data="detail.events" border row-key="id">
+              <el-table-column prop="occurredAt" label="发生时间" min-width="180"><template #default="scope">{{ parseTime(scope.row.occurredAt) }}</template></el-table-column>
+              <el-table-column prop="eventType" label="事件类型" min-width="150" />
+              <el-table-column label="操作" width="80"><template #default="scope"><el-button link type="primary" @click="goEvent(scope.row.id)">查看</el-button></template></el-table-column>
+            </el-table>
+            <h3>命中说明</h3>
+            <el-timeline>
+              <el-timeline-item v-for="match in detail.matches" :key="`${match.eventId}-${match.ruleId}`" :timestamp="parseTime(match.matchedAt)" type="primary">
+                规则 v{{ match.ruleVersion }}：{{ match.explanation }}
+              </el-timeline-item>
+            </el-timeline>
+          </template>
+        </div>
+      </el-drawer>
+    </template>
+  </BasicLayout>
+</template>
+
+<script>
+import { getAlert, listAlerts } from '@/api/bell/alert'
+
+export default {
+  name: 'BellAlerts',
+  data() {
+    return {
+      loading: false, detailLoading: false, error: '', detailError: '', items: [], total: 0,
+      drawer: false, detail: null,
+      severities: [{ label: '低', value: 'low' }, { label: '中', value: 'medium' }, { label: '高', value: 'high' }, { label: '紧急', value: 'critical' }],
+      query: { pageIndex: 1, pageSize: 10, status: '', severity: '', location: '' }
+    }
+  },
+  created() { this.load().then(() => { if (this.$route.query.alertId) this.openDetail({ id: this.$route.query.alertId }) }) },
+  methods: {
+    async load() {
+      this.loading = true; this.error = ''
+      try { const response = await listAlerts(this.query); this.items = response.data.list || []; this.total = response.data.count || 0 } catch (error) { this.error = error.message || '预警加载失败' } finally { this.loading = false }
+    },
+    search() { this.query.pageIndex = 1; this.load() },
+    reset() { this.$refs.queryForm.resetFields(); this.search() },
+    async openDetail(row) {
+      this.drawer = true; this.detailLoading = true; this.detailError = ''; this.detail = null
+      try { const response = await getAlert(row.id); this.detail = response.data } catch (error) { this.detailError = error.message || '预警详情加载失败' } finally { this.detailLoading = false }
+    },
+    goEvent(id) { this.drawer = false; this.$router.push({ path: '/bell/events', query: { eventId: id }}) },
+    severityName(value) { return { low: '低', medium: '中', high: '高', critical: '紧急' }[value] || value },
+    severityType(value) { return { low: 'info', medium: 'primary', high: 'warning', critical: 'danger' }[value] || 'info' }
+  }
+}
+</script>
+
+<style scoped>
+.page-heading h2{margin:0}.page-heading p{margin:6px 0 0;color:var(--el-text-color-secondary)}.state-alert{margin-bottom:16px}h3{font-size:16px;margin:22px 0 10px}
+</style>

Bell/ui/src/views/bell/events/index.vue

@@ -0,0 +1,103 @@
+<template>
+  <BasicLayout>
+    <template #wrapper>
+      <el-card class="box-card">
+        <template #header>
+          <div class="page-heading">
+            <div><h2>事件查询</h2><p>原始事件只读保存，规则评估和预警不会改写事件。</p></div>
+          </div>
+        </template>
+        <el-form ref="queryForm" :model="query" :inline="true">
+          <el-form-item label="事件类型" prop="eventType"><el-input v-model="query.eventType" clearable placeholder="请输入事件类型" @keyup.enter="search" /></el-form-item>
+          <el-form-item label="地点" prop="location"><el-input v-model="query.location" clearable placeholder="请输入地点" @keyup.enter="search" /></el-form-item>
+          <el-form-item label="风险" prop="severity">
+            <el-select v-model="query.severity" clearable placeholder="全部风险" style="width: 130px">
+              <el-option v-for="item in severities" :key="item.value" :label="item.label" :value="item.value" />
+            </el-select>
+          </el-form-item>
+          <el-form-item><el-button type="primary" @click="search">搜索</el-button><el-button @click="reset">重置</el-button></el-form-item>
+        </el-form>
+        <el-alert v-if="error" :title="error" type="error" show-icon :closable="false" class="state-alert" />
+        <el-table v-loading="loading" :data="items" border row-key="id" @row-dblclick="openDetail">
+          <el-table-column prop="occurredAt" label="发生时间" min-width="180"><template #default="scope">{{ parseTime(scope.row.occurredAt) }}</template></el-table-column>
+          <el-table-column prop="eventType" label="事件类型" min-width="160" show-overflow-tooltip />
+          <el-table-column prop="location" label="地点" min-width="150" show-overflow-tooltip />
+          <el-table-column label="风险" width="90"><template #default="scope"><el-tag :type="severityType(scope.row.severity)">{{ severityName(scope.row.severity) }}</el-tag></template></el-table-column>
+          <el-table-column prop="alertCount" label="关联预警" width="100" />
+          <el-table-column label="操作" width="90"><template #default="scope"><el-button type="primary" link @click="openDetail(scope.row)">详情</el-button></template></el-table-column>
+          <template #empty><el-empty description="暂无事件" /></template>
+        </el-table>
+        <pagination v-show="total > 0" v-model:current-page="query.pageIndex" v-model:page-size="query.pageSize" :total="total" @pagination="load" />
+      </el-card>
+
+      <el-drawer v-model="drawer" title="事件详情" size="min(680px, 100%)">
+        <div v-loading="detailLoading">
+          <el-alert v-if="detailError" :title="detailError" type="error" show-icon :closable="false" class="state-alert" />
+          <template v-if="selected">
+            <el-descriptions :column="1" border>
+              <el-descriptions-item label="发生事项">{{ selected.eventType }}</el-descriptions-item>
+              <el-descriptions-item label="地点">{{ selected.location }}</el-descriptions-item>
+              <el-descriptions-item label="发生时间">{{ parseTime(selected.occurredAt) }}</el-descriptions-item>
+              <el-descriptions-item label="紧急程度">{{ severityName(selected.severity) }}</el-descriptions-item>
+              <el-descriptions-item label="事件编号">{{ selected.id }}</el-descriptions-item>
+              <el-descriptions-item label="事件来源">{{ selected.producerId }}</el-descriptions-item>
+              <el-descriptions-item label="来源事件编号">{{ selected.sourceEventId }}</el-descriptions-item>
+              <el-descriptions-item label="证据引用">{{ selected.evidenceRef || '无' }}</el-descriptions-item>
+            </el-descriptions>
+            <h3>关联预警</h3>
+            <el-table :data="results.alerts" border row-key="id">
+              <el-table-column prop="summary" label="预警事项" min-width="180" />
+              <el-table-column prop="status" label="状态" width="90"><template #default><el-tag type="danger">待处理</el-tag></template></el-table-column>
+              <el-table-column label="操作" width="80"><template #default="scope"><el-button link type="primary" @click="goAlert(scope.row.id)">查看</el-button></template></el-table-column>
+              <template #empty><el-empty description="该事件未生成预警" /></template>
+            </el-table>
+            <h3>规则评估</h3>
+            <el-table :data="results.evaluations" border row-key="ruleId">
+              <el-table-column label="规则" min-width="160"><template #default="scope">{{ scope.row.ruleSnapshot && scope.row.ruleSnapshot.name }}</template></el-table-column>
+              <el-table-column prop="ruleVersion" label="版本" width="70" />
+              <el-table-column label="结果" width="90"><template #default="scope"><el-tag :type="scope.row.matched ? 'success' : 'info'">{{ scope.row.matched ? '命中' : '未命中' }}</el-tag></template></el-table-column>
+              <el-table-column prop="explanation" label="说明" min-width="180" />
+              <template #empty><el-empty description="接收时没有启用规则" /></template>
+            </el-table>
+          </template>
+        </div>
+      </el-drawer>
+    </template>
+  </BasicLayout>
+</template>
+
+<script>
+import { getEvent, getEventRuleResults, listEvents } from '@/api/bell/event'
+
+export default {
+  name: 'BellEvents',
+  data() {
+    return {
+      loading: false, detailLoading: false, error: '', detailError: '', items: [], total: 0,
+      drawer: false, selected: null, results: { alerts: [], evaluations: [] },
+      severities: [{ label: '低', value: 'low' }, { label: '中', value: 'medium' }, { label: '高', value: 'high' }, { label: '紧急', value: 'critical' }],
+      query: { pageIndex: 1, pageSize: 10, eventType: '', location: '', severity: '' }
+    }
+  },
+  created() { this.load().then(() => { if (this.$route.query.eventId) this.openDetail({ id: this.$route.query.eventId }) }) },
+  methods: {
+    async load() {
+      this.loading = true; this.error = ''
+      try { const response = await listEvents(this.query); this.items = response.data.list || []; this.total = response.data.count || 0 } catch (error) { this.error = error.message || '事件加载失败' } finally { this.loading = false }
+    },
+    search() { this.query.pageIndex = 1; this.load() },
+    reset() { this.$refs.queryForm.resetFields(); this.search() },
+    async openDetail(row) {
+      this.drawer = true; this.detailLoading = true; this.detailError = ''; this.selected = null
+      try { const [eventResponse, resultResponse] = await Promise.all([getEvent(row.id), getEventRuleResults(row.id)]); this.selected = eventResponse.data; this.results = resultResponse.data } catch (error) { this.detailError = error.message || '事件详情加载失败' } finally { this.detailLoading = false }
+    },
+    goAlert(id) { this.drawer = false; this.$router.push({ path: '/bell/alerts', query: { alertId: id }}) },
+    severityName(value) { return { low: '低', medium: '中', high: '高', critical: '紧急' }[value] || value },
+    severityType(value) { return { low: 'info', medium: 'primary', high: 'warning', critical: 'danger' }[value] || 'info' }
+  }
+}
+</script>
+
+<style scoped>
+.page-heading h2{margin:0}.page-heading p{margin:6px 0 0;color:var(--el-text-color-secondary)}.state-alert{margin-bottom:16px}h3{font-size:16px;margin:22px 0 10px}
+</style>

Bell/ui/src/views/bell/rules/index.vue

@@ -0,0 +1,96 @@
+<template>
+  <BasicLayout>
+    <template #wrapper>
+      <el-card class="box-card">
+        <template #header><div class="page-heading"><div><h2>规则配置</h2><p>规则修改会产生新版本，已有事件的命中快照不会改变。</p></div><el-button v-permisaction="['bell:rule:add']" type="primary" @click="openCreate">新增规则</el-button></div></template>
+        <el-form ref="queryForm" :model="query" :inline="true">
+          <el-form-item label="规则" prop="name"><el-input v-model="query.name" clearable placeholder="名称或编码" @keyup.enter="search" /></el-form-item>
+          <el-form-item label="状态" prop="enabled"><el-select v-model="query.enabled" clearable placeholder="全部状态" style="width:130px"><el-option label="已启用" :value="true" /><el-option label="已停用" :value="false" /></el-select></el-form-item>
+          <el-form-item><el-button type="primary" @click="search">搜索</el-button><el-button @click="reset">重置</el-button></el-form-item>
+        </el-form>
+        <el-alert v-if="error" :title="error" type="error" show-icon :closable="false" class="state-alert" />
+        <el-table v-loading="loading" :data="items" border row-key="id">
+          <el-table-column prop="name" label="规则名称" min-width="170" />
+          <el-table-column prop="code" label="规则编码" min-width="150" />
+          <el-table-column label="事件类型" min-width="150"><template #default="scope">{{ scope.row.eventType || '全部' }}</template></el-table-column>
+          <el-table-column label="最低风险" width="100"><template #default="scope"><el-tag :type="severityType(scope.row.minimumSeverity)">{{ severityName(scope.row.minimumSeverity) }}</el-tag></template></el-table-column>
+          <el-table-column label="地点包含" min-width="130"><template #default="scope">{{ scope.row.locationContains || '不限' }}</template></el-table-column>
+          <el-table-column prop="version" label="版本" width="70" />
+          <el-table-column label="状态" width="100"><template #default="scope"><el-switch v-model="scope.row.enabled" :disabled="!canEdit" inline-prompt active-text="启" inactive-text="停" @change="toggle(scope.row)" /></template></el-table-column>
+          <el-table-column label="操作" width="90"><template #default="scope"><el-button v-permisaction="['bell:rule:edit']" link type="primary" @click="openEdit(scope.row)">编辑</el-button></template></el-table-column>
+          <template #empty><el-empty description="暂无规则" /></template>
+        </el-table>
+        <pagination v-show="total > 0" v-model:current-page="query.pageIndex" v-model:page-size="query.pageSize" :total="total" @pagination="load" />
+      </el-card>
+
+      <el-dialog v-model="dialog" :title="editing ? '编辑规则' : '新增规则'" width="min(560px, calc(100vw - 32px))" :close-on-click-modal="false" @closed="clearForm">
+        <el-alert title="保存后仅影响随后接收的事件，历史命中记录保持原样。" type="info" :closable="false" class="state-alert" />
+        <el-form ref="ruleForm" :model="form" :rules="formRules" label-position="top">
+          <el-form-item label="规则编码" prop="code"><el-input v-model.trim="form.code" :disabled="editing" placeholder="如 gate-danger" /></el-form-item>
+          <el-form-item label="规则名称" prop="name"><el-input v-model.trim="form.name" maxlength="128" show-word-limit /></el-form-item>
+          <el-form-item label="事件类型"><el-input v-model.trim="form.eventType" placeholder="留空表示全部类型" maxlength="128" /></el-form-item>
+          <el-form-item label="最低风险" prop="minimumSeverity"><el-select v-model="form.minimumSeverity" style="width:100%"><el-option v-for="item in severities" :key="item.value" :label="item.label" :value="item.value" /></el-select></el-form-item>
+          <el-form-item label="地点包含"><el-input v-model.trim="form.locationContains" placeholder="留空表示不限地点" maxlength="128" /></el-form-item>
+        </el-form>
+        <template #footer><el-button @click="dialog=false">取消</el-button><el-button type="primary" :loading="saving" @click="save">保存</el-button></template>
+      </el-dialog>
+    </template>
+  </BasicLayout>
+</template>
+
+<script>
+import { createRule, listRules, setRuleEnabled, updateRule } from '@/api/bell/rule'
+
+export default {
+  name: 'BellRules',
+  data() {
+    return {
+      loading: false, saving: false, error: '', items: [], total: 0, dialog: false, editing: false, editingId: '',
+      severities: [{ label: '低', value: 'low' }, { label: '中', value: 'medium' }, { label: '高', value: 'high' }, { label: '紧急', value: 'critical' }],
+      query: { pageIndex: 1, pageSize: 10, name: '', enabled: null },
+      form: { code: '', name: '', eventType: '', minimumSeverity: 'high', locationContains: '' },
+      formRules: {
+        code: [{ required: true, pattern: /^[a-z0-9][a-z0-9_-]{1,127}$/, message: '请输入至少2位小写字母、数字、下划线或短横线', trigger: 'blur' }],
+        name: [{ required: true, message: '请输入规则名称', trigger: 'blur' }],
+        minimumSeverity: [{ required: true, message: '请选择最低风险', trigger: 'change' }]
+      }
+    }
+  },
+  computed: {
+    canEdit() { const values = this.$store.getters.permisaction || []; return values.includes('*:*:*') || values.includes('bell:rule:edit') }
+  },
+  created() { this.load() },
+  methods: {
+    async load() {
+      this.loading = true; this.error = ''
+      try { const response = await listRules(this.query); this.items = response.data.list || []; this.total = response.data.count || 0 } catch (error) { this.error = error.message || '规则加载失败' } finally { this.loading = false }
+    },
+    search() { this.query.pageIndex = 1; this.load() },
+    reset() { this.$refs.queryForm.resetFields(); this.query.enabled = null; this.search() },
+    openCreate() { this.editing = false; this.editingId = ''; this.dialog = true },
+    openEdit(row) {
+      this.editing = true; this.editingId = row.id
+      this.form = { code: row.code, name: row.name, eventType: row.eventType || '', minimumSeverity: row.minimumSeverity, locationContains: row.locationContains || '' }
+      this.dialog = true
+    },
+    async save() {
+      try {
+        await this.$refs.ruleForm.validate(); this.saving = true
+        const payload = { ...this.form, eventType: this.form.eventType || null, locationContains: this.form.locationContains || null }
+        if (this.editing) await updateRule(this.editingId, payload); else await createRule(payload)
+        this.msgSuccess(this.editing ? '规则已更新并生成新版本' : '规则已创建'); this.dialog = false; await this.load()
+      } catch (error) { if (error && error.message) this.error = error.message } finally { this.saving = false }
+    },
+    async toggle(row) {
+      try { await setRuleEnabled(row.id, row.enabled); this.msgSuccess(row.enabled ? '规则已启用' : '规则已停用'); await this.load() } catch (error) { row.enabled = !row.enabled; this.error = error.message || '规则状态更新失败' }
+    },
+    clearForm() { this.$refs.ruleForm && this.$refs.ruleForm.clearValidate(); this.form = { code: '', name: '', eventType: '', minimumSeverity: 'high', locationContains: '' } },
+    severityName(value) { return { low: '低', medium: '中', high: '高', critical: '紧急' }[value] || value },
+    severityType(value) { return { low: 'info', medium: 'primary', high: 'warning', critical: 'danger' }[value] || 'info' }
+  }
+}
+</script>
+
+<style scoped>
+.page-heading{display:flex;align-items:center;justify-content:space-between;gap:16px}.page-heading h2{margin:0}.page-heading p{margin:6px 0 0;color:var(--el-text-color-secondary)}.state-alert{margin-bottom:16px}
+</style>

Bell/ui/tests/unit/bell/rule-alert/api.spec.js

@@ -0,0 +1,41 @@
+import request from '@/utils/request'
+import { getAlert, listAlerts } from '@/api/bell/alert'
+import { getEvent, getEventRuleResults, listEvents } from '@/api/bell/event'
+import { createRule, listRules, setRuleEnabled, updateRule } from '@/api/bell/rule'
+
+jest.mock('@/utils/request', () => jest.fn(config => Promise.resolve(config)))
+
+describe('Bell rule-alert API adapters', () => {
+  beforeEach(() => request.mockClear())
+
+  it('maps read operations to the versioned Bell routes', async() => {
+    await listAlerts({ status: 'open' })
+    await getAlert('alert-1')
+    await listEvents({ severity: 'high' })
+    await getEvent('event-1')
+    await getEventRuleResults('event-1')
+    await listRules({ enabled: true })
+
+    expect(request.mock.calls.map(call => call[0])).toEqual([
+      { url: '/api/v1/bell/alerts', method: 'get', params: { status: 'open' }},
+      { url: '/api/v1/bell/alerts/alert-1', method: 'get' },
+      { url: '/api/v1/bell/events', method: 'get', params: { severity: 'high' }},
+      { url: '/api/v1/bell/events/event-1', method: 'get' },
+      { url: '/api/v1/bell/events/event-1/rule-results', method: 'get' },
+      { url: '/api/v1/bell/rules', method: 'get', params: { enabled: true }}
+    ])
+  })
+
+  it('maps administrator writes without exposing unrelated operations', async() => {
+    const payload = { name: '区域规则', minimumSeverity: 'high' }
+    await createRule(payload)
+    await updateRule('rule-1', payload)
+    await setRuleEnabled('rule-1', false)
+
+    expect(request.mock.calls.map(call => call[0])).toEqual([
+      { url: '/api/v1/bell/rules', method: 'post', data: payload },
+      { url: '/api/v1/bell/rules/rule-1', method: 'put', data: payload },
+      { url: '/api/v1/bell/rules/rule-1/enabled', method: 'put', data: { enabled: false }}
+    ])
+  })
+})

Bell/ui/tests/unit/bell/rule-alert/rules-page.spec.js

@@ -0,0 +1,44 @@
+import RulesPage from '@/views/bell/rules/index.vue'
+import { listRules } from '@/api/bell/rule'
+
+jest.mock('@/api/bell/rule', () => ({
+  createRule: jest.fn(),
+  listRules: jest.fn(),
+  setRuleEnabled: jest.fn(),
+  updateRule: jest.fn()
+}))
+
+function pageContext() {
+  return {
+    loading: false,
+    error: '',
+    items: [],
+    total: 0,
+    query: { pageIndex: 1, pageSize: 10, name: '', enabled: null }
+  }
+}
+
+describe('Bell ordinary warning rule page', () => {
+  beforeEach(() => jest.clearAllMocks())
+
+  it('only enables rule changes for the GoAdmin edit permission', () => {
+    expect(RulesPage.computed.canEdit.call({ $store: { getters: { permisaction: ['bell:rule:list'] }}})).toBe(false)
+    expect(RulesPage.computed.canEdit.call({ $store: { getters: { permisaction: ['bell:rule:edit'] }}})).toBe(true)
+    expect(RulesPage.computed.canEdit.call({ $store: { getters: { permisaction: ['*:*:*'] }}})).toBe(true)
+  })
+
+  it('keeps an empty list as an intentional page state', async() => {
+    listRules.mockResolvedValue({ data: { list: [], count: 0 }})
+    const context = pageContext()
+    await RulesPage.methods.load.call(context)
+    expect(context).toMatchObject({ loading: false, error: '', items: [], total: 0 })
+  })
+
+  it('surfaces a failed list request instead of leaving a blank page', async() => {
+    listRules.mockRejectedValue(new Error('网络不可用'))
+    const context = pageContext()
+    await RulesPage.methods.load.call(context)
+    expect(context.loading).toBe(false)
+    expect(context.error).toBe('网络不可用')
+  })
+})

Brain/src/yovision_brain/app/__init__.py

@@ -0,0 +1,5 @@
+"""Brain independent vertical-slice application."""
+
+from .runner import RunSummary, run_pipeline
+
+__all__ = ["RunSummary", "run_pipeline"]

Brain/src/yovision_brain/app/__main__.py

@@ -0,0 +1,63 @@
+"""CLI for the isolated Brain local-event vertical slice."""
+
+from __future__ import annotations
+
+import argparse
+import json
+import sys
+from pathlib import Path
+
+from yovision_brain.config import ConfigError
+from yovision_brain.decode import DecoderError
+from yovision_brain.events import JsonLinesSink
+from yovision_brain.input import InputError
+from yovision_brain.rules import RuleConfigError
+
+from .runner import run_pipeline
+
+
+def build_parser() -> argparse.ArgumentParser:
+    parser = argparse.ArgumentParser(description="Run the isolated Brain internal-event pipeline")
+    parser.add_argument("--config", required=True, help="explicit Brain-internal JSON configuration")
+    parser.add_argument("--output", default="-", help="JSON Lines output file, or - for stdout")
+    return parser
+
+
+def main(argv: list[str] | None = None) -> int:
+    args = build_parser().parse_args(argv)
+    config_path = Path(args.config)
+    try:
+        raw = json.loads(config_path.read_text(encoding="utf-8"))
+    except (OSError, UnicodeError, json.JSONDecodeError):
+        print(json.dumps({"status": "error", "message": "Brain internal config cannot be read"}), file=sys.stderr)
+        return 2
+    if not isinstance(raw, dict):
+        print(json.dumps({"status": "error", "message": "Brain internal config must be an object"}), file=sys.stderr)
+        return 2
+
+    stream = sys.stdout
+    owned_stream = None
+    try:
+        if args.output != "-":
+            try:
+                owned_stream = Path(args.output).open("w", encoding="utf-8", newline="\n")
+            except OSError:
+                print(json.dumps({"status": "error", "message": "event output cannot be opened"}), file=sys.stderr)
+                return 2
+            stream = owned_stream
+        summary = run_pipeline(raw, JsonLinesSink(stream), base_dir=config_path.parent)
+    except (ConfigError, DecoderError, InputError, RuleConfigError, RuntimeError, ValueError) as exc:
+        print(json.dumps({"status": "error", "message": str(exc)}, ensure_ascii=False), file=sys.stderr)
+        return 3
+    except KeyboardInterrupt:
+        print(json.dumps({"status": "cancelled"}), file=sys.stderr)
+        return 130
+    finally:
+        if owned_stream is not None:
+            owned_stream.close()
+    print(json.dumps({"status": summary.status, "frames": summary.frames, "detections": summary.detections, "events": summary.events}, sort_keys=True), file=sys.stderr)
+    return 0
+
+
+if __name__ == "__main__":
+    raise SystemExit(main())

Brain/src/yovision_brain/app/runner.py

@@ -0,0 +1,110 @@
+"""Compose input, decode, anonymous vision, rules and local event output."""
+
+from __future__ import annotations
+
+from dataclasses import dataclass
+from pathlib import Path
+from typing import Any, Mapping
+
+from yovision_brain.config import BrainInputConfig, parse_input_config
+from yovision_brain.decode import decode_packets
+from yovision_brain.events import EventSink, candidate_from_decision
+from yovision_brain.input import CancellationToken, build_input_source
+from yovision_brain.rules import (
+    AreaDefinition,
+    DirectionalLineDefinition,
+    NormalizedPoint,
+    RuleEngine,
+    RuleSet,
+)
+from yovision_brain.vision import LumaBlobDetector, SingleStreamTracker, TorchLumaBlobDetector
+
+
+@dataclass(frozen=True, slots=True)
+class RunSummary:
+    status: str
+    frames: int
+    detections: int
+    events: int
+
+
+def _rules(config: BrainInputConfig, version: str) -> RuleSet:
+    return RuleSet(
+        version=version,
+        profile_id=config.profile.profile_id,
+        width=config.profile.width,
+        height=config.profile.height,
+        areas=tuple(
+            AreaDefinition(area.rule_id, tuple(NormalizedPoint(point.x, point.y) for point in area.points))
+            for area in config.areas
+        ),
+        directional_lines=tuple(
+            DirectionalLineDefinition(
+                line.rule_id,
+                NormalizedPoint(line.start.x, line.start.y),
+                NormalizedPoint(line.end.x, line.end.y),
+                line.trigger_direction,
+            )
+            for line in config.directional_lines
+        ),
+    )
+
+
+def run_pipeline(
+    raw: Mapping[str, Any],
+    sink: EventSink,
+    *,
+    base_dir: Path | None = None,
+    cancellation: CancellationToken | None = None,
+) -> RunSummary:
+    input_raw = raw.get("input")
+    if not isinstance(input_raw, Mapping):
+        raise ValueError("input must be an object")
+    config = parse_input_config(input_raw, base_dir=base_dir)
+    version = raw.get("rules_version")
+    if not isinstance(version, str) or not version:
+        raise ValueError("rules_version must be a non-empty string")
+    detector_raw = raw.get("detector", {})
+    if not isinstance(detector_raw, Mapping):
+        raise ValueError("detector must be an object")
+    backend = detector_raw.get("backend", "python")
+    threshold = detector_raw.get("threshold", 200)
+    minimum_area = detector_raw.get("minimum_area", 1)
+    if not isinstance(threshold, int) or not isinstance(minimum_area, int):
+        raise ValueError("detector threshold and minimum_area must be integers")
+    if backend == "python":
+        detector = LumaBlobDetector(threshold=threshold, minimum_area=minimum_area)
+    elif backend == "torch_cpu":
+        detector = TorchLumaBlobDetector(threshold=threshold, minimum_area=minimum_area, device="cpu")
+    else:
+        raise ValueError("detector.backend must be python or torch_cpu")
+
+    source = build_input_source(config)
+    tracker = SingleStreamTracker()
+    engine = RuleEngine(_rules(config, version))
+    frame_count = detection_count = event_count = 0
+    for frame in decode_packets(source.packets(cancellation), cancellation):
+        frame_count += 1
+        detections = detector.detect(frame)
+        detection_count += len(detections)
+        tracks = tracker.update(detections, frame_sequence=frame.sequence, timestamp_ns=frame.timestamp_ns)
+        decisions = engine.evaluate(
+            tracks,
+            profile_id=frame.profile_id,
+            width=frame.width,
+            height=frame.height,
+        )
+        tracks_by_id = {track.track_id: track for track in tracks}
+        for decision in decisions:
+            if not decision.triggered:
+                continue
+            sink.write(candidate_from_decision(
+                decision,
+                tracks_by_id[decision.track_id],
+                logical_input_id=config.logical_device_id,
+                detector=detector.metadata,
+            ))
+            event_count += 1
+    tracker.finish()
+    status = "cancelled" if cancellation is not None and cancellation.cancelled else "completed"
+    return RunSummary(status, frame_count, detection_count, event_count)

Brain/src/yovision_brain/config/__init__.py

@@ -0,0 +1,27 @@
+"""Brain-internal configuration models.
+
+These types are deliberately not a cross-project contract. Adapters for a
+future versioned Sense/Brain contract belong in a coordination task.
+"""
+
+from .models import (
+    AreaRule,
+    BrainInputConfig,
+    ConfigError,
+    DirectionalLineRule,
+    Point,
+    SourceConfig,
+    VideoProfile,
+    parse_input_config,
+)
+
+__all__ = [
+    "AreaRule",
+    "BrainInputConfig",
+    "ConfigError",
+    "DirectionalLineRule",
+    "Point",
+    "SourceConfig",
+    "VideoProfile",
+    "parse_input_config",
+]

Brain/src/yovision_brain/config/models.py

@@ -0,0 +1,206 @@
+"""Validated project-internal input configuration."""
+
+from __future__ import annotations
+
+from dataclasses import dataclass
+from pathlib import Path
+from typing import Any, Mapping, Sequence
+
+INTERNAL_SCHEMA = "brain.internal.input/v1"
+_SECRET_KEYS = {"credential", "password", "secret", "token", "username"}
+
+
+class ConfigError(ValueError):
+    """Raised when Brain's project-internal test/runtime config is invalid."""
+
+
+@dataclass(frozen=True, slots=True)
+class Point:
+    x: float
+    y: float
+
+
+@dataclass(frozen=True, slots=True)
+class AreaRule:
+    rule_id: str
+    points: tuple[Point, ...]
+
+
+@dataclass(frozen=True, slots=True)
+class DirectionalLineRule:
+    rule_id: str
+    start: Point
+    end: Point
+    trigger_direction: str
+
+
+@dataclass(frozen=True, slots=True)
+class VideoProfile:
+    profile_id: str
+    width: int
+    height: int
+    fps: float
+
+
+@dataclass(frozen=True, slots=True)
+class SourceConfig:
+    kind: str
+    seed: int | None = None
+    frame_count: int | None = None
+    path: Path | None = None
+    chunk_size: int = 64 * 1024
+
+
+@dataclass(frozen=True, slots=True)
+class BrainInputConfig:
+    schema: str
+    logical_device_id: str
+    profile: VideoProfile
+    source: SourceConfig
+    areas: tuple[AreaRule, ...] = ()
+    directional_lines: tuple[DirectionalLineRule, ...] = ()
+
+
+def _mapping(value: object, field: str) -> Mapping[str, Any]:
+    if not isinstance(value, Mapping):
+        raise ConfigError(f"{field} must be an object")
+    return value
+
+
+def _text(value: object, field: str) -> str:
+    if not isinstance(value, str) or not value.strip():
+        raise ConfigError(f"{field} must be a non-empty string")
+    return value.strip()
+
+
+def _integer(value: object, field: str, *, minimum: int = 1) -> int:
+    if isinstance(value, bool) or not isinstance(value, int) or value < minimum:
+        raise ConfigError(f"{field} must be an integer >= {minimum}")
+    return value
+
+
+def _number(value: object, field: str, *, minimum: float = 0.0) -> float:
+    if isinstance(value, bool) or not isinstance(value, (int, float)):
+        raise ConfigError(f"{field} must be a number")
+    result = float(value)
+    if result <= minimum:
+        raise ConfigError(f"{field} must be greater than {minimum}")
+    return result
+
+
+def _reject_secrets(value: object, field: str = "config") -> None:
+    if isinstance(value, Mapping):
+        for key, child in value.items():
+            normalized = str(key).strip().lower()
+            if normalized in _SECRET_KEYS or any(
+                marker in normalized for marker in ("password", "secret", "token")
+            ):
+                raise ConfigError(f"{field} must not contain credential field {key!r}")
+            _reject_secrets(child, f"{field}.{key}")
+    elif isinstance(value, Sequence) and not isinstance(value, (str, bytes, bytearray)):
+        for index, child in enumerate(value):
+            _reject_secrets(child, f"{field}[{index}]")
+
+
+def _point(value: object, field: str) -> Point:
+    if (
+        not isinstance(value, Sequence)
+        or isinstance(value, (str, bytes, bytearray))
+        or len(value) != 2
+    ):
+        raise ConfigError(f"{field} must be [x, y]")
+    x, y = value
+    if isinstance(x, bool) or isinstance(y, bool) or not isinstance(x, (int, float)) or not isinstance(y, (int, float)):
+        raise ConfigError(f"{field} coordinates must be numbers")
+    point = Point(float(x), float(y))
+    if not 0.0 <= point.x <= 1.0 or not 0.0 <= point.y <= 1.0:
+        raise ConfigError(f"{field} coordinates must be normalized to 0..1")
+    return point
+
+
+def parse_input_config(raw: Mapping[str, Any], *, base_dir: Path | None = None) -> BrainInputConfig:
+    """Parse the explicitly versioned Brain-internal input configuration."""
+    _reject_secrets(raw)
+    schema = _text(raw.get("schema"), "schema")
+    if schema != INTERNAL_SCHEMA:
+        raise ConfigError(f"schema must be {INTERNAL_SCHEMA!r}")
+
+    profile_raw = _mapping(raw.get("profile"), "profile")
+    profile = VideoProfile(
+        profile_id=_text(profile_raw.get("id"), "profile.id"),
+        width=_integer(profile_raw.get("width"), "profile.width"),
+        height=_integer(profile_raw.get("height"), "profile.height"),
+        fps=_number(profile_raw.get("fps"), "profile.fps"),
+    )
+
+    source_raw = _mapping(raw.get("source"), "source")
+    kind = _text(source_raw.get("kind"), "source.kind")
+    if kind == "synthetic":
+        seed = source_raw.get("seed", 0)
+        if isinstance(seed, bool) or not isinstance(seed, int):
+            raise ConfigError("source.seed must be an integer")
+        source = SourceConfig(
+            kind=kind,
+            seed=seed,
+            frame_count=_integer(source_raw.get("frame_count"), "source.frame_count"),
+        )
+    elif kind == "local_file":
+        configured_path = Path(_text(source_raw.get("path"), "source.path"))
+        if not configured_path.is_absolute() and base_dir is not None:
+            configured_path = base_dir / configured_path
+        source = SourceConfig(
+            kind=kind,
+            path=configured_path,
+            chunk_size=_integer(source_raw.get("chunk_size", 64 * 1024), "source.chunk_size"),
+        )
+    else:
+        raise ConfigError("source.kind must be 'synthetic' or 'local_file'")
+
+    areas_raw = raw.get("areas", [])
+    if not isinstance(areas_raw, list):
+        raise ConfigError("areas must be an array")
+    areas: list[AreaRule] = []
+    for index, item in enumerate(areas_raw):
+        area = _mapping(item, f"areas[{index}]")
+        points_raw = area.get("points")
+        if not isinstance(points_raw, list) or len(points_raw) < 3:
+            raise ConfigError(f"areas[{index}].points must contain at least three points")
+        areas.append(
+            AreaRule(
+                rule_id=_text(area.get("id"), f"areas[{index}].id"),
+                points=tuple(_point(point, f"areas[{index}].points[{point_index}]") for point_index, point in enumerate(points_raw)),
+            )
+        )
+
+    lines_raw = raw.get("directional_lines", [])
+    if not isinstance(lines_raw, list):
+        raise ConfigError("directional_lines must be an array")
+    lines: list[DirectionalLineRule] = []
+    for index, item in enumerate(lines_raw):
+        line = _mapping(item, f"directional_lines[{index}]")
+        direction = _text(line.get("trigger_direction"), f"directional_lines[{index}].trigger_direction")
+        if direction not in {"left_to_right", "right_to_left"}:
+            raise ConfigError(
+                f"directional_lines[{index}].trigger_direction must be left_to_right or right_to_left"
+            )
+        lines.append(
+            DirectionalLineRule(
+                rule_id=_text(line.get("id"), f"directional_lines[{index}].id"),
+                start=_point(line.get("start"), f"directional_lines[{index}].start"),
+                end=_point(line.get("end"), f"directional_lines[{index}].end"),
+                trigger_direction=direction,
+            )
+        )
+
+    identifiers = [area.rule_id for area in areas] + [line.rule_id for line in lines]
+    if len(set(identifiers)) != len(identifiers):
+        raise ConfigError("rule ids must be unique")
+
+    return BrainInputConfig(
+        schema=schema,
+        logical_device_id=_text(raw.get("logical_device_id"), "logical_device_id"),
+        profile=profile,
+        source=source,
+        areas=tuple(areas),
+        directional_lines=tuple(lines),
+    )

Brain/src/yovision_brain/decode/__init__.py

@@ -0,0 +1,16 @@
+"""Replaceable Brain-internal video decode pipeline."""
+
+from .models import DecodedFrame, DecoderBackend, DecoderError
+from .pipeline import DecoderPipeline, decode_packets
+from .raw_rgb import RawRGBDecoder
+from .y4m import Y4MDecoder
+
+__all__ = [
+    "DecodedFrame",
+    "DecoderBackend",
+    "DecoderError",
+    "DecoderPipeline",
+    "RawRGBDecoder",
+    "Y4MDecoder",
+    "decode_packets",
+]

Brain/src/yovision_brain/decode/models.py

@@ -0,0 +1,35 @@
+"""Decode-layer ports and frame model."""
+
+from __future__ import annotations
+
+from dataclasses import dataclass
+from typing import Iterable, Iterator, Protocol
+
+from yovision_brain.input import CancellationToken, InputPacket
+
+
+class DecoderError(RuntimeError):
+    """A safe and actionable decode failure."""
+
+
+@dataclass(frozen=True, slots=True)
+class DecodedFrame:
+    sequence: int
+    timestamp_ns: int
+    logical_device_id: str
+    profile_id: str
+    width: int
+    height: int
+    pixel_format: str
+    payload: bytes
+    dimensions_changed: bool = False
+
+
+class DecoderBackend(Protocol):
+    media_formats: frozenset[str]
+
+    def decode(
+        self,
+        packets: Iterable[InputPacket],
+        cancellation: CancellationToken | None = None,
+    ) -> Iterator[DecodedFrame]: ...

Brain/src/yovision_brain/decode/pipeline.py

@@ -0,0 +1,47 @@
+"""Decoder selection independent of concrete codec libraries."""
+
+from __future__ import annotations
+
+from collections.abc import Iterable, Iterator
+from itertools import chain
+
+from yovision_brain.input import CancellationToken, InputPacket
+
+from .models import DecodedFrame, DecoderBackend, DecoderError
+from .raw_rgb import RawRGBDecoder
+from .y4m import Y4MDecoder
+
+
+class DecoderPipeline:
+    def __init__(self, backends: Iterable[DecoderBackend] | None = None) -> None:
+        selected = tuple(backends) if backends is not None else (RawRGBDecoder(), Y4MDecoder())
+        self._backends: dict[str, DecoderBackend] = {}
+        for backend in selected:
+            for media_format in backend.media_formats:
+                if media_format in self._backends:
+                    raise ValueError(f"duplicate decoder for media format {media_format!r}")
+                self._backends[media_format] = backend
+
+    def decode(
+        self,
+        packets: Iterable[InputPacket],
+        cancellation: CancellationToken | None = None,
+    ) -> Iterator[DecodedFrame]:
+        iterator = iter(packets)
+        if cancellation is not None and cancellation.cancelled:
+            return
+        try:
+            first = next(iterator)
+        except StopIteration:
+            return
+        backend = self._backends.get(first.media_format)
+        if backend is None:
+            raise DecoderError(f"no decoder registered for media format {first.media_format!r}")
+        yield from backend.decode(chain((first,), iterator), cancellation)
+
+
+def decode_packets(
+    packets: Iterable[InputPacket],
+    cancellation: CancellationToken | None = None,
+) -> Iterator[DecodedFrame]:
+    return DecoderPipeline().decode(packets, cancellation)

Brain/src/yovision_brain/decode/raw_rgb.py

@@ -0,0 +1,45 @@
+"""Pass-through decoder for deterministic RGB24 synthetic frames."""
+
+from __future__ import annotations
+
+from collections.abc import Iterable, Iterator
+
+from yovision_brain.input import CancellationToken, InputPacket
+
+from .models import DecodedFrame, DecoderError
+
+
+class RawRGBDecoder:
+    media_formats = frozenset({"rgb24"})
+
+    def decode(
+        self,
+        packets: Iterable[InputPacket],
+        cancellation: CancellationToken | None = None,
+    ) -> Iterator[DecodedFrame]:
+        previous_dimensions: tuple[int, int] | None = None
+        for packet in packets:
+            if cancellation is not None and cancellation.cancelled:
+                return
+            if packet.media_format != "rgb24":
+                raise DecoderError(f"raw RGB decoder does not support {packet.media_format!r}")
+            expected = packet.width * packet.height * 3
+            if len(packet.payload) != expected:
+                raise DecoderError(
+                    f"RGB24 frame {packet.sequence} has {len(packet.payload)} bytes; expected {expected}"
+                )
+            if packet.timestamp_ns is None:
+                raise DecoderError(f"RGB24 frame {packet.sequence} has no source timestamp")
+            dimensions = (packet.width, packet.height)
+            yield DecodedFrame(
+                sequence=packet.sequence,
+                timestamp_ns=packet.timestamp_ns,
+                logical_device_id=packet.logical_device_id,
+                profile_id=packet.profile_id,
+                width=packet.width,
+                height=packet.height,
+                pixel_format="rgb24",
+                payload=packet.payload,
+                dimensions_changed=previous_dimensions is not None and dimensions != previous_dimensions,
+            )
+            previous_dimensions = dimensions

Brain/src/yovision_brain/decode/y4m.py

@@ -0,0 +1,167 @@
+"""Minimal streaming YUV4MPEG2 decoder for anonymous local fixtures.
+
+The backend intentionally supports only uncompressed C444 streams. Production
+codecs and RTSP belong behind the same decoder port in later tasks.
+"""
+
+from __future__ import annotations
+
+from collections.abc import Iterable, Iterator
+from dataclasses import dataclass
+
+from yovision_brain.input import CancellationToken, InputPacket
+
+from .models import DecodedFrame, DecoderError
+
+_MAX_HEADER_BYTES = 4096
+_MAX_FRAME_BYTES = 256 * 1024 * 1024
+
+
+class _Cancelled(Exception):
+    pass
+
+
+class _PacketReader:
+    def __init__(
+        self,
+        packets: Iterable[InputPacket],
+        cancellation: CancellationToken | None,
+    ) -> None:
+        self._packets = iter(packets)
+        self._cancellation = cancellation
+        self._buffer = bytearray()
+        self._ended = False
+        self.first_packet: InputPacket | None = None
+
+    def _fill(self) -> bool:
+        if self._cancellation is not None and self._cancellation.cancelled:
+            raise _Cancelled
+        if self._ended:
+            return False
+        try:
+            packet = next(self._packets)
+        except StopIteration:
+            self._ended = True
+            return False
+        if packet.media_format != "container-bytes":
+            raise DecoderError(f"Y4M decoder does not support {packet.media_format!r}")
+        if self.first_packet is None:
+            self.first_packet = packet
+        else:
+            first = self.first_packet
+            if (packet.logical_device_id, packet.profile_id) != (
+                first.logical_device_id,
+                first.profile_id,
+            ):
+                raise DecoderError("input identity changed inside one local video stream")
+        self._buffer.extend(packet.payload)
+        return True
+
+    def line(self, *, allow_clean_eof: bool = False) -> bytes | None:
+        while True:
+            newline = self._buffer.find(b"\n")
+            if newline >= 0:
+                result = bytes(self._buffer[:newline])
+                del self._buffer[: newline + 1]
+                return result
+            if len(self._buffer) > _MAX_HEADER_BYTES:
+                raise DecoderError("Y4M header exceeds the safe size limit")
+            if not self._fill():
+                if not self._buffer and allow_clean_eof:
+                    return None
+                raise DecoderError("truncated Y4M header")
+
+    def exact(self, size: int) -> bytes:
+        while len(self._buffer) < size:
+            if not self._fill():
+                raise DecoderError("truncated Y4M frame payload")
+        result = bytes(self._buffer[:size])
+        del self._buffer[:size]
+        return result
+
+
+@dataclass(frozen=True, slots=True)
+class _Header:
+    width: int
+    height: int
+    fps_numerator: int
+    fps_denominator: int
+
+
+def _positive_int(value: bytes, field: str) -> int:
+    try:
+        result = int(value)
+    except ValueError as exc:
+        raise DecoderError(f"invalid Y4M {field}") from exc
+    if result <= 0:
+        raise DecoderError(f"invalid Y4M {field}")
+    return result
+
+
+def _parse_header(line: bytes) -> _Header:
+    parts = line.split()
+    if not parts or parts[0] != b"YUV4MPEG2":
+        raise DecoderError("unsupported local video format; expected YUV4MPEG2")
+    fields = {part[:1]: part[1:] for part in parts[1:] if len(part) > 1}
+    if fields.get(b"C", b"444") not in {b"444", b"444jpeg"}:
+        raise DecoderError("unsupported Y4M chroma; only C444 is supported")
+    width = _positive_int(fields.get(b"W", b""), "width")
+    height = _positive_int(fields.get(b"H", b""), "height")
+    fps_parts = fields.get(b"F", b"").split(b":", 1)
+    if len(fps_parts) != 2:
+        raise DecoderError("invalid Y4M frame rate")
+    header = _Header(
+        width=width,
+        height=height,
+        fps_numerator=_positive_int(fps_parts[0], "frame rate numerator"),
+        fps_denominator=_positive_int(fps_parts[1], "frame rate denominator"),
+    )
+    if header.width * header.height * 3 > _MAX_FRAME_BYTES:
+        raise DecoderError("Y4M frame exceeds the safe size limit")
+    return header
+
+
+class Y4MDecoder:
+    media_formats = frozenset({"container-bytes"})
+
+    def decode(
+        self,
+        packets: Iterable[InputPacket],
+        cancellation: CancellationToken | None = None,
+    ) -> Iterator[DecodedFrame]:
+        reader = _PacketReader(packets, cancellation)
+        try:
+            header_line = reader.line()
+            assert header_line is not None
+            header = _parse_header(header_line)
+            first = reader.first_packet
+            if first is None:
+                raise DecoderError("local video input is empty")
+            if (first.width, first.height) != (header.width, header.height):
+                raise DecoderError(
+                    "Y4M dimensions do not match the configured input profile "
+                    f"({header.width}x{header.height} != {first.width}x{first.height})"
+                )
+            interval_ns = round(1_000_000_000 * header.fps_denominator / header.fps_numerator)
+            frame_size = header.width * header.height * 3
+            sequence = 0
+            while True:
+                frame_header = reader.line(allow_clean_eof=True)
+                if frame_header is None:
+                    return
+                if frame_header != b"FRAME":
+                    raise DecoderError(f"invalid Y4M frame header at frame {sequence}")
+                payload = reader.exact(frame_size)
+                yield DecodedFrame(
+                    sequence=sequence,
+                    timestamp_ns=sequence * interval_ns,
+                    logical_device_id=first.logical_device_id,
+                    profile_id=first.profile_id,
+                    width=header.width,
+                    height=header.height,
+                    pixel_format="yuv444p",
+                    payload=payload,
+                )
+                sequence += 1
+        except _Cancelled:
+            return

Brain/src/yovision_brain/events/__init__.py

@@ -0,0 +1,13 @@
+"""Brain-internal event candidates and local sinks."""
+
+from .mapper import candidate_from_decision
+from .models import INTERNAL_EVENT_SCHEMA, InternalEventCandidate
+from .sink import EventSink, JsonLinesSink
+
+__all__ = [
+    "EventSink",
+    "INTERNAL_EVENT_SCHEMA",
+    "InternalEventCandidate",
+    "JsonLinesSink",
+    "candidate_from_decision",
+]

Brain/src/yovision_brain/events/mapper.py

@@ -0,0 +1,53 @@
+"""Stable mapping from an internal rule hit to an internal event candidate."""
+
+from __future__ import annotations
+
+import hashlib
+import json
+
+from yovision_brain.rules import RuleDecision
+from yovision_brain.vision import DetectorMetadata, TrackedObject
+
+from .models import INTERNAL_EVENT_SCHEMA, InternalEventCandidate
+
+
+def candidate_from_decision(
+    decision: RuleDecision,
+    track: TrackedObject,
+    *,
+    logical_input_id: str,
+    detector: DetectorMetadata,
+) -> InternalEventCandidate:
+    if not decision.triggered or decision.track_id != track.track_id:
+        raise ValueError("only a triggered decision for the same anonymous track can become an event")
+    event_type = "danger_area_entered" if decision.rule_type == "danger_area" else "directional_line_crossed"
+    observation: dict[str, object] = {
+        "category": track.category,
+        "confidence": track.confidence,
+        "box": {
+            "left": track.box.left,
+            "top": track.box.top,
+            "right": track.box.right,
+            "bottom": track.box.bottom,
+        },
+        "anchor": {"x": decision.anchor.x, "y": decision.anchor.y},
+    }
+    fact = {
+        "schema": INTERNAL_EVENT_SCHEMA,
+        "logical_input_id": logical_input_id,
+        "event_type": event_type,
+        "occurred_at_ns": decision.timestamp_ns,
+        "rule_id": decision.rule_id,
+        "rule_version": decision.config_version,
+        "model_name": detector.name,
+        "model_version": detector.version,
+        "profile_id": decision.profile_id,
+        "frame_width": decision.width,
+        "frame_height": decision.height,
+        "track_id": track.track_id,
+        "observation": observation,
+        "reason": decision.reason,
+    }
+    canonical = json.dumps(fact, ensure_ascii=False, sort_keys=True, separators=(",", ":"))
+    event_id = "brain-local-" + hashlib.sha256(canonical.encode("utf-8")).hexdigest()
+    return InternalEventCandidate(event_id=event_id, **fact)

Brain/src/yovision_brain/events/models.py

@@ -0,0 +1,29 @@
+"""Explicitly internal event candidate model; not a shared contract."""
+
+from __future__ import annotations
+
+from dataclasses import asdict, dataclass
+
+INTERNAL_EVENT_SCHEMA = "brain.internal.event-candidate/v1"
+
+
+@dataclass(frozen=True, slots=True)
+class InternalEventCandidate:
+    schema: str
+    event_id: str
+    logical_input_id: str
+    event_type: str
+    occurred_at_ns: int
+    rule_id: str
+    rule_version: str
+    model_name: str
+    model_version: str
+    profile_id: str
+    frame_width: int
+    frame_height: int
+    track_id: str
+    observation: dict[str, object]
+    reason: str
+
+    def to_dict(self) -> dict[str, object]:
+        return asdict(self)

Brain/src/yovision_brain/events/sink.py

@@ -0,0 +1,21 @@
+"""Replaceable local event sinks."""
+
+from __future__ import annotations
+
+import json
+from typing import Protocol, TextIO
+
+from .models import InternalEventCandidate
+
+
+class EventSink(Protocol):
+    def write(self, candidate: InternalEventCandidate) -> None: ...
+
+
+class JsonLinesSink:
+    def __init__(self, stream: TextIO) -> None:
+        self._stream = stream
+
+    def write(self, candidate: InternalEventCandidate) -> None:
+        self._stream.write(json.dumps(candidate.to_dict(), ensure_ascii=False, sort_keys=True) + "\n")
+        self._stream.flush()

Brain/src/yovision_brain/input/__init__.py

@@ -0,0 +1,16 @@
+"""Brain-internal video input adapters."""
+
+from .factory import build_input_source
+from .local_file import LocalFileInput
+from .models import CancellationToken, InputError, InputPacket, InputSource
+from .synthetic import SyntheticInput
+
+__all__ = [
+    "CancellationToken",
+    "InputError",
+    "InputPacket",
+    "InputSource",
+    "LocalFileInput",
+    "SyntheticInput",
+    "build_input_source",
+]

Brain/src/yovision_brain/input/factory.py

@@ -0,0 +1,17 @@
+"""Construct the configured Brain-internal input adapter."""
+
+from __future__ import annotations
+
+from yovision_brain.config import BrainInputConfig
+
+from .local_file import LocalFileInput
+from .models import InputSource
+from .synthetic import SyntheticInput
+
+
+def build_input_source(config: BrainInputConfig) -> InputSource:
+    if config.source.kind == "synthetic":
+        return SyntheticInput(config)
+    if config.source.kind == "local_file":
+        return LocalFileInput(config)
+    raise ValueError(f"unsupported Brain input source kind: {config.source.kind}")

Brain/src/yovision_brain/input/local_file.py

@@ -0,0 +1,54 @@
+"""Explicit local-file input adapter with safe error reporting."""
+
+from __future__ import annotations
+
+from collections.abc import Iterator
+from pathlib import Path
+
+from yovision_brain.config import BrainInputConfig
+
+from .models import CancellationToken, InputError, InputPacket
+
+
+class LocalFileInput:
+    def __init__(self, config: BrainInputConfig) -> None:
+        if config.source.kind != "local_file" or config.source.path is None:
+            raise ValueError("LocalFileInput requires a local_file source config")
+        self._config = config
+        self._path = config.source.path
+
+    @property
+    def source_label(self) -> str:
+        """Return a safe label rather than exposing the internal absolute path."""
+        return self._path.name
+
+    def packets(self, cancellation: CancellationToken | None = None) -> Iterator[InputPacket]:
+        profile = self._config.profile
+        source = self._config.source
+        try:
+            stream = self._path.open("rb")
+        except FileNotFoundError as exc:
+            raise InputError(f"local video source not found: {self.source_label}") from exc
+        except OSError as exc:
+            raise InputError(f"local video source cannot be opened: {self.source_label}: {exc.strerror}") from exc
+
+        with stream:
+            sequence = 0
+            while cancellation is None or not cancellation.cancelled:
+                try:
+                    payload = stream.read(source.chunk_size)
+                except OSError as exc:
+                    raise InputError(f"local video source read failed: {self.source_label}: {exc.strerror}") from exc
+                if not payload:
+                    return
+                yield InputPacket(
+                    sequence=sequence,
+                    timestamp_ns=None,
+                    logical_device_id=self._config.logical_device_id,
+                    profile_id=profile.profile_id,
+                    width=profile.width,
+                    height=profile.height,
+                    media_format="container-bytes",
+                    payload=payload,
+                )
+                sequence += 1

Brain/src/yovision_brain/input/models.py

@@ -0,0 +1,43 @@
+"""Common project-internal input types."""
+
+from __future__ import annotations
+
+from dataclasses import dataclass
+from threading import Event
+from typing import Iterator, Protocol
+
+
+class InputError(RuntimeError):
+    """A safe, actionable input adapter error."""
+
+
+class CancellationToken:
+    """Thread-safe cooperative cancellation without platform dependencies."""
+
+    def __init__(self) -> None:
+        self._event = Event()
+
+    def cancel(self) -> None:
+        self._event.set()
+
+    @property
+    def cancelled(self) -> bool:
+        return self._event.is_set()
+
+
+@dataclass(frozen=True, slots=True)
+class InputPacket:
+    sequence: int
+    timestamp_ns: int | None
+    logical_device_id: str
+    profile_id: str
+    width: int
+    height: int
+    media_format: str
+    payload: bytes
+
+
+class InputSource(Protocol):
+    """Replaceable source boundary consumed by the future decode layer."""
+
+    def packets(self, cancellation: CancellationToken | None = None) -> Iterator[InputPacket]: ...

Brain/src/yovision_brain/input/synthetic.py

@@ -0,0 +1,38 @@
+"""Deterministic synthetic RGB input for isolated tests and smoke runs."""
+
+from __future__ import annotations
+
+import random
+from collections.abc import Iterator
+
+from yovision_brain.config import BrainInputConfig
+
+from .models import CancellationToken, InputPacket
+
+
+class SyntheticInput:
+    def __init__(self, config: BrainInputConfig) -> None:
+        if config.source.kind != "synthetic":
+            raise ValueError("SyntheticInput requires a synthetic source config")
+        self._config = config
+
+    def packets(self, cancellation: CancellationToken | None = None) -> Iterator[InputPacket]:
+        source = self._config.source
+        assert source.seed is not None and source.frame_count is not None
+        randomizer = random.Random(source.seed)
+        profile = self._config.profile
+        frame_size = profile.width * profile.height * 3
+        interval_ns = round(1_000_000_000 / profile.fps)
+        for sequence in range(source.frame_count):
+            if cancellation is not None and cancellation.cancelled:
+                return
+            yield InputPacket(
+                sequence=sequence,
+                timestamp_ns=sequence * interval_ns,
+                logical_device_id=self._config.logical_device_id,
+                profile_id=profile.profile_id,
+                width=profile.width,
+                height=profile.height,
+                media_format="rgb24",
+                payload=randomizer.randbytes(frame_size),
+            )

Brain/src/yovision_brain/rules/__init__.py

@@ -0,0 +1,21 @@
+"""Brain-internal anonymous area and directional-line rules."""
+
+from .engine import RuleEngine
+from .models import (
+    AreaDefinition,
+    DirectionalLineDefinition,
+    NormalizedPoint,
+    RuleConfigError,
+    RuleDecision,
+    RuleSet,
+)
+
+__all__ = [
+    "AreaDefinition",
+    "DirectionalLineDefinition",
+    "NormalizedPoint",
+    "RuleConfigError",
+    "RuleDecision",
+    "RuleEngine",
+    "RuleSet",
+]

Brain/src/yovision_brain/rules/engine.py

@@ -0,0 +1,112 @@
+"""Stateful, explainable area and directional-line evaluation."""
+
+from __future__ import annotations
+
+from yovision_brain.vision import TrackedObject
+
+from .models import NormalizedPoint, RuleConfigError, RuleDecision, RuleSet
+
+_EPSILON = 1e-9
+
+
+def _anchor(track: TrackedObject, width: int, height: int) -> NormalizedPoint:
+    x = (track.box.left + track.box.right) / (2.0 * width)
+    y = track.box.bottom / height
+    try:
+        return NormalizedPoint(x, y)
+    except RuleConfigError as exc:
+        raise RuleConfigError(f"track {track.track_id!r} anchor is outside the configured frame") from exc
+
+
+def _on_segment(point: NormalizedPoint, first: NormalizedPoint, second: NormalizedPoint) -> bool:
+    cross = (second.x - first.x) * (point.y - first.y) - (second.y - first.y) * (point.x - first.x)
+    return abs(cross) <= _EPSILON and min(first.x, second.x) - _EPSILON <= point.x <= max(first.x, second.x) + _EPSILON and min(first.y, second.y) - _EPSILON <= point.y <= max(first.y, second.y) + _EPSILON
+
+
+def _inside(point: NormalizedPoint, polygon: tuple[NormalizedPoint, ...]) -> bool:
+    inside = False
+    previous = polygon[-1]
+    for current in polygon:
+        if _on_segment(point, previous, current):
+            return True
+        if (current.y > point.y) != (previous.y > point.y):
+            crossing_x = (previous.x - current.x) * (point.y - current.y) / (previous.y - current.y) + current.x
+            if point.x < crossing_x:
+                inside = not inside
+        previous = current
+    return inside
+
+
+def _side(point: NormalizedPoint, start: NormalizedPoint, end: NormalizedPoint) -> float:
+    return (end.x - start.x) * (point.y - start.y) - (end.y - start.y) * (point.x - start.x)
+
+
+class RuleEngine:
+    """Evaluates one versioned rule set against one stream session."""
+
+    def __init__(self, rules: RuleSet) -> None:
+        self._rules = rules
+        self._area_inside: dict[tuple[str, str], bool] = {}
+        self._line_side: dict[tuple[str, str], int] = {}
+
+    def evaluate(
+        self,
+        tracks: tuple[TrackedObject, ...],
+        *,
+        profile_id: str,
+        width: int,
+        height: int,
+    ) -> tuple[RuleDecision, ...]:
+        if (profile_id, width, height) != (self._rules.profile_id, self._rules.width, self._rules.height):
+            raise RuleConfigError("track Profile/resolution does not match the versioned rule configuration")
+        decisions: list[RuleDecision] = []
+        for track in tracks:
+            anchor = _anchor(track, width, height)
+            common = dict(
+                track_id=track.track_id,
+                config_version=self._rules.version,
+                profile_id=profile_id,
+                width=width,
+                height=height,
+                anchor=anchor,
+                timestamp_ns=track.timestamp_ns,
+            )
+            for area in self._rules.areas:
+                key = (track.track_id, area.rule_id)
+                current = _inside(anchor, area.points)
+                previous = self._area_inside.get(key, False)
+                state = "entered" if current and not previous else "inside" if current else "outside"
+                self._area_inside[key] = current
+                decisions.append(RuleDecision(
+                    rule_id=area.rule_id,
+                    rule_type="danger_area",
+                    state=state,
+                    triggered=state == "entered",
+                    reason=f"bottom-center anchor is {state} the configured polygon",
+                    **common,
+                ))
+            for line in self._rules.directional_lines:
+                key = (track.track_id, line.rule_id)
+                value = _side(anchor, line.start, line.end)
+                if abs(value) <= line.deadband:
+                    decisions.append(RuleDecision(
+                        rule_id=line.rule_id, rule_type="directional_line", state="on_line",
+                        triggered=False, reason="anchor is inside the line deadband; previous significant side is retained",
+                        **common,
+                    ))
+                    continue
+                current_side = 1 if value > 0 else -1
+                previous_side = self._line_side.get(key)
+                self._line_side[key] = current_side
+                wanted = (previous_side, current_side) == ((1, -1) if line.trigger_direction == "left_to_right" else (-1, 1))
+                crossed = previous_side is not None and previous_side != current_side
+                state = "triggered" if wanted else "reverse_crossing" if crossed else "same_side"
+                decisions.append(RuleDecision(
+                    rule_id=line.rule_id,
+                    rule_type="directional_line",
+                    state=state,
+                    triggered=wanted,
+                    reason=f"directed side transition {previous_side!r}->{current_side}; expected {line.trigger_direction}",
+                    **common,
+                ))
+        return tuple(decisions)

Brain/src/yovision_brain/rules/models.py

@@ -0,0 +1,84 @@
+"""Versioned Brain-internal rule configuration and decisions."""
+
+from __future__ import annotations
+
+from dataclasses import dataclass
+
+
+class RuleConfigError(ValueError):
+    pass
+
+
+@dataclass(frozen=True, slots=True)
+class NormalizedPoint:
+    x: float
+    y: float
+
+    def __post_init__(self) -> None:
+        if not 0.0 <= self.x <= 1.0 or not 0.0 <= self.y <= 1.0:
+            raise RuleConfigError("rule coordinates must be normalized to 0..1")
+
+
+@dataclass(frozen=True, slots=True)
+class AreaDefinition:
+    rule_id: str
+    points: tuple[NormalizedPoint, ...]
+
+
+@dataclass(frozen=True, slots=True)
+class DirectionalLineDefinition:
+    rule_id: str
+    start: NormalizedPoint
+    end: NormalizedPoint
+    trigger_direction: str
+    deadband: float = 0.005
+
+
+@dataclass(frozen=True, slots=True)
+class RuleSet:
+    version: str
+    profile_id: str
+    width: int
+    height: int
+    areas: tuple[AreaDefinition, ...] = ()
+    directional_lines: tuple[DirectionalLineDefinition, ...] = ()
+
+    def __post_init__(self) -> None:
+        if not self.version or not self.profile_id or self.width <= 0 or self.height <= 0:
+            raise RuleConfigError("rule version, profile and dimensions are required")
+        identifiers = [rule.rule_id for rule in self.areas] + [rule.rule_id for rule in self.directional_lines]
+        if any(not identifier for identifier in identifiers) or len(set(identifiers)) != len(identifiers):
+            raise RuleConfigError("rule ids must be non-empty and unique")
+        for area in self.areas:
+            if len(area.points) < 3 or abs(_polygon_area(area.points)) < 1e-9:
+                raise RuleConfigError(f"area {area.rule_id!r} must be a non-degenerate polygon")
+        for line in self.directional_lines:
+            if line.start == line.end:
+                raise RuleConfigError(f"line {line.rule_id!r} must have distinct endpoints")
+            if line.trigger_direction not in {"left_to_right", "right_to_left"}:
+                raise RuleConfigError(f"line {line.rule_id!r} has invalid trigger direction")
+            if not 0.0 <= line.deadband < 0.5:
+                raise RuleConfigError(f"line {line.rule_id!r} has invalid deadband")
+
+
+def _polygon_area(points: tuple[NormalizedPoint, ...]) -> float:
+    return sum(
+        first.x * second.y - second.x * first.y
+        for first, second in zip(points, points[1:] + points[:1])
+    ) / 2.0
+
+
+@dataclass(frozen=True, slots=True)
+class RuleDecision:
+    rule_id: str
+    rule_type: str
+    track_id: str
+    state: str
+    triggered: bool
+    reason: str
+    config_version: str
+    profile_id: str
+    width: int
+    height: int
+    anchor: NormalizedPoint
+    timestamp_ns: int

Brain/src/yovision_brain/vision/__init__.py

@@ -0,0 +1,16 @@
+"""Anonymous detection and single-stream tracking."""
+
+from .detector import LumaBlobDetector, TorchLumaBlobDetector
+from .models import BoundingBox, Detection, Detector, DetectorMetadata, TrackedObject
+from .tracker import SingleStreamTracker
+
+__all__ = [
+    "BoundingBox",
+    "Detection",
+    "Detector",
+    "DetectorMetadata",
+    "LumaBlobDetector",
+    "SingleStreamTracker",
+    "TorchLumaBlobDetector",
+    "TrackedObject",
+]

Brain/src/yovision_brain/vision/detector.py

@@ -0,0 +1,120 @@
+"""Deterministic anonymous blob detectors with no biometric semantics."""
+
+from __future__ import annotations
+
+from collections.abc import Sequence
+
+from yovision_brain.decode import DecodedFrame, DecoderError
+
+from .models import BoundingBox, Detection, DetectorMetadata
+
+_METADATA = DetectorMetadata(
+    name="yovision-luma-blob",
+    version="1.0.0",
+    source="YoVision Brain first-party deterministic algorithm",
+    license="No external model license; no learned weights are distributed",
+    weights="none",
+)
+
+
+def _components(mask: Sequence[Sequence[bool]], minimum_area: int) -> tuple[BoundingBox, ...]:
+    height = len(mask)
+    width = len(mask[0]) if height else 0
+    visited: set[tuple[int, int]] = set()
+    boxes: list[BoundingBox] = []
+    for y in range(height):
+        for x in range(width):
+            if not mask[y][x] or (x, y) in visited:
+                continue
+            pending = [(x, y)]
+            visited.add((x, y))
+            points: list[tuple[int, int]] = []
+            while pending:
+                current_x, current_y = pending.pop()
+                points.append((current_x, current_y))
+                for neighbor in (
+                    (current_x - 1, current_y),
+                    (current_x + 1, current_y),
+                    (current_x, current_y - 1),
+                    (current_x, current_y + 1),
+                ):
+                    nx, ny = neighbor
+                    if 0 <= nx < width and 0 <= ny < height and mask[ny][nx] and neighbor not in visited:
+                        visited.add(neighbor)
+                        pending.append(neighbor)
+            if len(points) >= minimum_area:
+                xs, ys = zip(*points)
+                boxes.append(BoundingBox(min(xs), min(ys), max(xs) + 1, max(ys) + 1))
+    return tuple(sorted(boxes, key=lambda box: (box.top, box.left, box.bottom, box.right)))
+
+
+def _validate_frame(frame: DecodedFrame) -> None:
+    if frame.pixel_format not in {"rgb24", "yuv444p"}:
+        raise DecoderError(f"anonymous detector does not support pixel format {frame.pixel_format!r}")
+    expected = frame.width * frame.height * 3
+    if len(frame.payload) != expected:
+        raise DecoderError(f"vision frame has {len(frame.payload)} bytes; expected {expected}")
+
+
+class LumaBlobDetector:
+    """Small CPU reference detector used for deterministic integration tests."""
+
+    metadata = _METADATA
+
+    def __init__(self, *, threshold: int = 200, minimum_area: int = 1) -> None:
+        if not 0 <= threshold <= 255 or minimum_area < 1:
+            raise ValueError("invalid luma detector threshold or minimum area")
+        self._threshold = threshold
+        self._minimum_area = minimum_area
+
+    def detect(self, frame: DecodedFrame) -> tuple[Detection, ...]:
+        _validate_frame(frame)
+        if frame.pixel_format == "rgb24":
+            pixels = [
+                max(frame.payload[index : index + 3])
+                for index in range(0, len(frame.payload), 3)
+            ]
+        else:
+            pixels = list(frame.payload[: frame.width * frame.height])
+        mask = [
+            [pixels[y * frame.width + x] >= self._threshold for x in range(frame.width)]
+            for y in range(frame.height)
+        ]
+        return tuple(
+            Detection(box=box, category="anonymous_target", confidence=1.0)
+            for box in _components(mask, self._minimum_area)
+        )
+
+
+class TorchLumaBlobDetector:
+    """PyTorch CPU/GPU smoke backend; it contains no external model weights."""
+
+    metadata = DetectorMetadata(
+        name="yovision-torch-luma-blob",
+        version="1.0.0",
+        source="YoVision Brain first-party PyTorch tensor implementation",
+        license="PyTorch BSD-3-Clause; no external model weights",
+        weights="none",
+    )
+
+    def __init__(self, *, threshold: int = 200, minimum_area: int = 1, device: str = "cpu") -> None:
+        self._threshold = threshold
+        self._minimum_area = minimum_area
+        self._device = device
+
+    def detect(self, frame: DecodedFrame) -> tuple[Detection, ...]:
+        _validate_frame(frame)
+        try:
+            import torch
+        except ImportError as exc:
+            raise RuntimeError("PyTorch runtime is required for TorchLumaBlobDetector") from exc
+        values = torch.tensor(list(frame.payload), dtype=torch.uint8, device=self._device)
+        if frame.pixel_format == "rgb24":
+            luma = values.reshape(frame.height, frame.width, 3).amax(dim=2)
+        else:
+            luma = values[: frame.width * frame.height].reshape(frame.height, frame.width)
+        mask = (luma >= self._threshold).cpu().tolist()
+        return tuple(
+            Detection(box=box, category="anonymous_target", confidence=1.0)
+            for box in _components(mask, self._minimum_area)
+        )

Brain/src/yovision_brain/vision/models.py

@@ -0,0 +1,52 @@
+"""Privacy-preserving vision ports and observations."""
+
+from __future__ import annotations
+
+from dataclasses import dataclass
+from typing import Protocol
+
+from yovision_brain.decode import DecodedFrame
+
+
+@dataclass(frozen=True, slots=True)
+class DetectorMetadata:
+    name: str
+    version: str
+    source: str
+    license: str
+    weights: str
+
+
+@dataclass(frozen=True, slots=True)
+class BoundingBox:
+    left: int
+    top: int
+    right: int
+    bottom: int
+
+    @property
+    def area(self) -> int:
+        return max(0, self.right - self.left) * max(0, self.bottom - self.top)
+
+
+@dataclass(frozen=True, slots=True)
+class Detection:
+    box: BoundingBox
+    category: str
+    confidence: float
+
+
+@dataclass(frozen=True, slots=True)
+class TrackedObject:
+    track_id: str
+    box: BoundingBox
+    category: str
+    confidence: float
+    frame_sequence: int
+    timestamp_ns: int
+
+
+class Detector(Protocol):
+    metadata: DetectorMetadata
+
+    def detect(self, frame: DecodedFrame) -> tuple[Detection, ...]: ...

Brain/src/yovision_brain/vision/tracker.py

@@ -0,0 +1,83 @@
+"""Session-local single-stream IoU tracker."""
+
+from __future__ import annotations
+
+from dataclasses import dataclass
+
+from .models import BoundingBox, Detection, TrackedObject
+
+
+def _iou(first: BoundingBox, second: BoundingBox) -> float:
+    intersection = BoundingBox(
+        max(first.left, second.left),
+        max(first.top, second.top),
+        min(first.right, second.right),
+        min(first.bottom, second.bottom),
+    ).area
+    union = first.area + second.area - intersection
+    return intersection / union if union else 0.0
+
+
+@dataclass(slots=True)
+class _Track:
+    track_id: str
+    detection: Detection
+    missed: int = 0
+
+
+class SingleStreamTracker:
+    """Tracks anonymous boxes only within one process session and one stream."""
+
+    def __init__(self, *, iou_threshold: float = 0.2, max_missed: int = 2) -> None:
+        if not 0.0 <= iou_threshold <= 1.0 or max_missed < 0:
+            raise ValueError("invalid tracker threshold or missed-frame limit")
+        self._iou_threshold = iou_threshold
+        self._max_missed = max_missed
+        self._tracks: dict[str, _Track] = {}
+        self._next_id = 1
+
+    def update(
+        self,
+        detections: tuple[Detection, ...],
+        *,
+        frame_sequence: int,
+        timestamp_ns: int,
+    ) -> tuple[TrackedObject, ...]:
+        unmatched_tracks = set(self._tracks)
+        results: list[TrackedObject] = []
+        for detection in detections:
+            candidates = [
+                (track_id, _iou(self._tracks[track_id].detection.box, detection.box))
+                for track_id in unmatched_tracks
+                if self._tracks[track_id].detection.category == detection.category
+            ]
+            track_id, score = max(candidates, key=lambda item: item[1], default=("", -1.0))
+            if score < self._iou_threshold:
+                track_id = f"track-{self._next_id:06d}"
+                self._next_id += 1
+                self._tracks[track_id] = _Track(track_id, detection)
+            else:
+                unmatched_tracks.remove(track_id)
+                self._tracks[track_id].detection = detection
+                self._tracks[track_id].missed = 0
+            results.append(
+                TrackedObject(
+                    track_id=track_id,
+                    box=detection.box,
+                    category=detection.category,
+                    confidence=detection.confidence,
+                    frame_sequence=frame_sequence,
+                    timestamp_ns=timestamp_ns,
+                )
+            )
+        for track_id in unmatched_tracks:
+            track = self._tracks[track_id]
+            track.missed += 1
+            if track.missed > self._max_missed:
+                del self._tracks[track_id]
+        return tuple(results)
+
+    def finish(self) -> tuple[str, ...]:
+        ended = tuple(sorted(self._tracks))
+        self._tracks.clear()
+        return ended

Brain/tests/app/test_runner.py

@@ -0,0 +1,68 @@
+from __future__ import annotations
+
+import io
+import json
+import subprocess
+import sys
+from pathlib import Path
+
+from yovision_brain.app import run_pipeline
+from yovision_brain.events import JsonLinesSink
+from yovision_brain.input import CancellationToken
+
+
+FIXTURE = Path(__file__).parents[1] / "fixtures" / "events" / "area.json"
+
+
+def test_pipeline_generates_stable_internal_event() -> None:
+    raw = json.loads(FIXTURE.read_text(encoding="utf-8"))
+    first_stream, second_stream = io.StringIO(), io.StringIO()
+    first = run_pipeline(raw, JsonLinesSink(first_stream), base_dir=FIXTURE.parent)
+    second = run_pipeline(raw, JsonLinesSink(second_stream), base_dir=FIXTURE.parent)
+    assert first.events == second.events == 1
+    assert first_stream.getvalue() == second_stream.getvalue()
+    event = json.loads(first_stream.getvalue())
+    assert event["event_type"] == "danger_area_entered"
+    assert event["schema"] == "brain.internal.event-candidate/v1"
+
+
+def test_no_hit_has_explicit_zero_event_summary() -> None:
+    raw = json.loads(FIXTURE.read_text(encoding="utf-8"))
+    raw["detector"]["threshold"] = 255
+    raw["detector"]["minimum_area"] = 1000
+    stream = io.StringIO()
+    summary = run_pipeline(raw, JsonLinesSink(stream))
+    assert (summary.status, summary.events, stream.getvalue()) == ("completed", 0, "")
+
+
+def test_cli_runs_without_sense_or_bell() -> None:
+    result = subprocess.run(
+        [sys.executable, "-m", "yovision_brain.app", "--config", str(FIXTURE), "--output", "-"],
+        check=False,
+        capture_output=True,
+        text=True,
+    )
+    assert result.returncode == 0
+    assert json.loads(result.stdout)["schema"] == "brain.internal.event-candidate/v1"
+    assert json.loads(result.stderr)["events"] == 1
+
+
+def test_pre_cancelled_run_is_explicit() -> None:
+    raw = json.loads(FIXTURE.read_text(encoding="utf-8"))
+    token = CancellationToken()
+    token.cancel()
+    summary = run_pipeline(raw, JsonLinesSink(io.StringIO()), cancellation=token)
+    assert (summary.status, summary.frames, summary.events) == ("cancelled", 0, 0)
+
+
+def test_cli_config_failure_is_nonzero_and_does_not_echo_path(tmp_path: Path) -> None:
+    missing = tmp_path / "private-machine-path.json"
+    result = subprocess.run(
+        [sys.executable, "-m", "yovision_brain.app", "--config", str(missing)],
+        check=False,
+        capture_output=True,
+        text=True,
+    )
+    assert result.returncode == 2
+    assert json.loads(result.stderr)["status"] == "error"
+    assert str(tmp_path) not in result.stderr

Brain/tests/config/test_input_config.py

@@ -0,0 +1,72 @@
+from __future__ import annotations
+
+from pathlib import Path
+
+import pytest
+
+from yovision_brain.config import ConfigError, parse_input_config
+
+
+def valid_config() -> dict[str, object]:
+    return {
+        "schema": "brain.internal.input/v1",
+        "logical_device_id": "synthetic-camera-01",
+        "profile": {"id": "main", "width": 4, "height": 3, "fps": 5},
+        "source": {"kind": "synthetic", "seed": 17, "frame_count": 3},
+        "areas": [{"id": "danger-yard", "points": [[0.1, 0.1], [0.9, 0.1], [0.5, 0.8]]}],
+        "directional_lines": [
+            {
+                "id": "gate-line",
+                "start": [0.2, 0.5],
+                "end": [0.8, 0.5],
+                "trigger_direction": "left_to_right",
+            }
+        ],
+    }
+
+
+def test_parse_versioned_internal_config() -> None:
+    parsed = parse_input_config(valid_config())
+    assert parsed.schema == "brain.internal.input/v1"
+    assert parsed.logical_device_id == "synthetic-camera-01"
+    assert parsed.profile.width == 4
+    assert parsed.areas[0].rule_id == "danger-yard"
+    assert parsed.directional_lines[0].trigger_direction == "left_to_right"
+
+
+def test_relative_local_path_is_bound_to_explicit_base(tmp_path: Path) -> None:
+    raw = valid_config()
+    raw["source"] = {"kind": "local_file", "path": "fixture.bin", "chunk_size": 8}
+    parsed = parse_input_config(raw, base_dir=tmp_path)
+    assert parsed.source.path == tmp_path / "fixture.bin"
+
+
+@pytest.mark.parametrize(
+    ("change", "message"),
+    [
+        ({"schema": "shared.source/v1"}, "schema must be"),
+        ({"logical_device_id": ""}, "logical_device_id"),
+        ({"source": {"kind": "synthetic", "seed": 1, "frame_count": 0}}, "frame_count"),
+        ({"password": "must-not-be-accepted"}, "credential field"),
+    ],
+)
+def test_invalid_or_secret_config_is_rejected(change: dict[str, object], message: str) -> None:
+    raw = valid_config()
+    raw.update(change)
+    with pytest.raises(ConfigError, match=message):
+        parse_input_config(raw)
+
+
+def test_coordinates_and_rule_ids_are_validated() -> None:
+    raw = valid_config()
+    raw["areas"] = [{"id": "same", "points": [[0, 0], [2, 0], [0, 1]]}]
+    with pytest.raises(ConfigError, match="normalized"):
+        parse_input_config(raw)
+
+    raw = valid_config()
+    raw["areas"] = [{"id": "same", "points": [[0, 0], [1, 0], [0, 1]]}]
+    raw["directional_lines"] = [
+        {"id": "same", "start": [0, 0], "end": [1, 1], "trigger_direction": "left_to_right"}
+    ]
+    with pytest.raises(ConfigError, match="unique"):
+        parse_input_config(raw)

Brain/tests/decode/test_pipeline.py

@@ -0,0 +1,104 @@
+from __future__ import annotations
+
+from pathlib import Path
+
+import pytest
+
+from yovision_brain.config import parse_input_config
+from yovision_brain.decode import DecoderError, DecoderPipeline, decode_packets
+from yovision_brain.input import CancellationToken, InputPacket, LocalFileInput, SyntheticInput
+
+
+def synthetic_packets():
+    config = parse_input_config(
+        {
+            "schema": "brain.internal.input/v1",
+            "logical_device_id": "synthetic-01",
+            "profile": {"id": "main", "width": 2, "height": 1, "fps": 5},
+            "source": {"kind": "synthetic", "seed": 3, "frame_count": 2},
+        }
+    )
+    return SyntheticInput(config).packets()
+
+
+def local_packets(path: Path, *, width: int = 2, height: int = 1, chunk_size: int = 5):
+    config = parse_input_config(
+        {
+            "schema": "brain.internal.input/v1",
+            "logical_device_id": "local-01",
+            "profile": {"id": "archive", "width": width, "height": height, "fps": 25},
+            "source": {"kind": "local_file", "path": str(path), "chunk_size": chunk_size},
+        }
+    )
+    return LocalFileInput(config).packets()
+
+
+def test_rgb24_pipeline_preserves_order_timestamps_and_metadata() -> None:
+    frames = list(decode_packets(synthetic_packets()))
+    assert [frame.sequence for frame in frames] == [0, 1]
+    assert [frame.timestamp_ns for frame in frames] == [0, 200_000_000]
+    assert all(frame.logical_device_id == "synthetic-01" for frame in frames)
+    assert all(frame.profile_id == "main" for frame in frames)
+    assert all((frame.width, frame.height, frame.pixel_format) == (2, 1, "rgb24") for frame in frames)
+
+
+def test_rgb24_dimension_change_is_explicit() -> None:
+    packets = [
+        InputPacket(0, 0, "camera", "main", 1, 1, "rgb24", b"abc"),
+        InputPacket(1, 1, "camera", "main", 2, 1, "rgb24", b"abcdef"),
+    ]
+    frames = list(decode_packets(packets))
+    assert [frame.dimensions_changed for frame in frames] == [False, True]
+
+
+def test_invalid_rgb_payload_and_unsupported_format_are_clear() -> None:
+    bad = [InputPacket(0, 0, "camera", "main", 2, 2, "rgb24", b"short")]
+    with pytest.raises(DecoderError, match="expected 12"):
+        list(decode_packets(bad))
+    unknown = [InputPacket(0, 0, "camera", "main", 1, 1, "opaque", b"data")]
+    with pytest.raises(DecoderError, match="no decoder registered"):
+        list(DecoderPipeline().decode(unknown))
+
+
+def test_y4m_local_video_decodes_across_input_chunks(tmp_path: Path) -> None:
+    video = tmp_path / "anonymous.y4m"
+    first, second = b"abcdef", b"ghijkl"
+    video.write_bytes(b"YUV4MPEG2 W2 H1 F25:1 C444\nFRAME\n" + first + b"FRAME\n" + second)
+    frames = list(decode_packets(local_packets(video)))
+    assert [frame.payload for frame in frames] == [first, second]
+    assert [frame.timestamp_ns for frame in frames] == [0, 40_000_000]
+    assert all(frame.pixel_format == "yuv444p" for frame in frames)
+    assert all((frame.width, frame.height) == (2, 1) for frame in frames)
+    assert all(frame.profile_id == "archive" for frame in frames)
+
+
+def test_y4m_clean_eof_and_cancellation_are_normal(tmp_path: Path) -> None:
+    video = tmp_path / "empty.y4m"
+    video.write_bytes(b"YUV4MPEG2 W2 H1 F25:1 C444\n")
+    assert list(decode_packets(local_packets(video))) == []
+
+    token = CancellationToken()
+    token.cancel()
+    assert list(decode_packets(local_packets(video), token)) == []
+
+
+@pytest.mark.parametrize(
+    ("payload", "message"),
+    [
+        (b"not-video\n", "expected YUV4MPEG2"),
+        (b"YUV4MPEG2 W2 H1 F25:1 C420\n", "only C444"),
+        (b"YUV4MPEG2 W2 H1 F25:1 C444\nFRAME\nabc", "truncated Y4M frame"),
+    ],
+)
+def test_y4m_damage_and_unsupported_content_are_clear(tmp_path: Path, payload: bytes, message: str) -> None:
+    video = tmp_path / "broken.y4m"
+    video.write_bytes(payload)
+    with pytest.raises(DecoderError, match=message):
+        list(decode_packets(local_packets(video)))
+
+
+def test_y4m_profile_dimension_mismatch_is_rejected(tmp_path: Path) -> None:
+    video = tmp_path / "mismatch.y4m"
+    video.write_bytes(b"YUV4MPEG2 W2 H1 F25:1 C444\n")
+    with pytest.raises(DecoderError, match="do not match"):
+        list(decode_packets(local_packets(video, width=3)))

Brain/tests/events/test_events.py

@@ -0,0 +1,30 @@
+from __future__ import annotations
+
+import io
+import json
+
+from yovision_brain.events import JsonLinesSink, candidate_from_decision
+from yovision_brain.rules import NormalizedPoint, RuleDecision
+from yovision_brain.vision import BoundingBox, DetectorMetadata, TrackedObject
+
+
+def test_internal_event_id_is_stable_and_payload_is_safe() -> None:
+    track = TrackedObject("track-000001", BoundingBox(1, 2, 3, 4), "anonymous_target", 1.0, 7, 123)
+    decision = RuleDecision("yard", "danger_area", track.track_id, "entered", True, "entered polygon", "rules-v1", "main", 10, 10, NormalizedPoint(0.2, 0.4), 123)
+    metadata = DetectorMetadata("detector", "1", "first-party", "no external weights", "none")
+    first = candidate_from_decision(decision, track, logical_input_id="camera-01", detector=metadata)
+    second = candidate_from_decision(decision, track, logical_input_id="camera-01", detector=metadata)
+    assert first == second
+    assert first.event_id.startswith("brain-local-")
+    payload = json.dumps(first.to_dict())
+    for forbidden in ("password", "rtsp://", "evidence", "face"):
+        assert forbidden not in payload.lower()
+
+
+def test_json_lines_sink_writes_one_canonical_line() -> None:
+    track = TrackedObject("track-000001", BoundingBox(0, 0, 1, 1), "anonymous_target", 1.0, 0, 0)
+    decision = RuleDecision("yard", "danger_area", track.track_id, "entered", True, "entered", "v1", "main", 2, 2, NormalizedPoint(0.25, 0.5), 0)
+    candidate = candidate_from_decision(decision, track, logical_input_id="synthetic", detector=DetectorMetadata("d", "1", "first", "none", "none"))
+    stream = io.StringIO()
+    JsonLinesSink(stream).write(candidate)
+    assert json.loads(stream.getvalue())["schema"] == "brain.internal.event-candidate/v1"

Brain/tests/fixtures/decode/README.md

@@ -0,0 +1,5 @@
+# Brain decode fixtures
+
+Decode tests generate tiny anonymous YUV4MPEG2 streams at runtime. Do not add
+customer recordings, camera credentials, machine-specific codec paths, or
+large model/media artifacts to this directory.

Brain/tests/fixtures/events/README.md

@@ -0,0 +1,5 @@
+# Brain internal-event fixtures
+
+These fixtures are synthetic and explicitly internal. They are not the future
+Brain-to-Bell event contract and must not contain evidence references, customer
+media, identities, credentials, or machine-specific paths.

Brain/tests/fixtures/events/area.json

@@ -0,0 +1,29 @@
+{
+  "rules_version": "fixture-rules-v1",
+  "detector": {
+    "backend": "python",
+    "threshold": 0,
+    "minimum_area": 1
+  },
+  "input": {
+    "schema": "brain.internal.input/v1",
+    "logical_device_id": "synthetic-camera-01",
+    "profile": {
+      "id": "main",
+      "width": 4,
+      "height": 3,
+      "fps": 5
+    },
+    "source": {
+      "kind": "synthetic",
+      "seed": 17,
+      "frame_count": 3
+    },
+    "areas": [
+      {
+        "id": "full-frame-area",
+        "points": [[0, 0], [1, 0], [1, 1], [0, 1]]
+      }
+    ]
+  }
+}

Brain/tests/fixtures/input/README.md

@@ -0,0 +1,7 @@
+# Brain input fixtures
+
+This directory may contain only synthetic or anonymous fixtures. Do not add
+customer video, camera credentials, personal data, or machine-specific paths.
+
+The current tests generate their tiny local-file payload at runtime so the
+repository does not carry a file that could be mistaken for customer media.

Brain/tests/fixtures/rules/README.md

@@ -0,0 +1,5 @@
+# Brain rule fixtures
+
+Rule tests use normalized synthetic geometry and anonymous track IDs only. Do
+not add customer site layouts, camera paths, identities, credentials, or a
+copy of a future cross-project contract.

Brain/tests/fixtures/vision/README.md

@@ -0,0 +1,5 @@
+# Brain vision fixtures
+
+Vision tests create anonymous geometric RGB frames in memory. Never add faces,
+customer recordings, biometric templates, camera credentials, or unreviewed
+model weights to this directory.

Brain/tests/input/test_sources.py

@@ -0,0 +1,83 @@
+from __future__ import annotations
+
+from pathlib import Path
+
+import pytest
+
+from yovision_brain.config import parse_input_config
+from yovision_brain.input import CancellationToken, InputError, LocalFileInput, SyntheticInput, build_input_source
+
+
+def synthetic_config(seed: int = 9, frame_count: int = 3):
+    return parse_input_config(
+        {
+            "schema": "brain.internal.input/v1",
+            "logical_device_id": "camera-lab-01",
+            "profile": {"id": "main", "width": 3, "height": 2, "fps": 4},
+            "source": {"kind": "synthetic", "seed": seed, "frame_count": frame_count},
+        }
+    )
+
+
+def local_config(path: Path, *, chunk_size: int = 4):
+    return parse_input_config(
+        {
+            "schema": "brain.internal.input/v1",
+            "logical_device_id": "local-video-01",
+            "profile": {"id": "archive", "width": 1920, "height": 1080, "fps": 25},
+            "source": {"kind": "local_file", "path": str(path), "chunk_size": chunk_size},
+        }
+    )
+
+
+def test_synthetic_input_is_deterministic_and_carries_metadata() -> None:
+    first = list(SyntheticInput(synthetic_config()).packets())
+    second = list(build_input_source(synthetic_config()).packets())
+    different = list(SyntheticInput(synthetic_config(seed=10)).packets())
+
+    assert first == second
+    assert [packet.sequence for packet in first] == [0, 1, 2]
+    assert [packet.timestamp_ns for packet in first] == [0, 250_000_000, 500_000_000]
+    assert first[0].logical_device_id == "camera-lab-01"
+    assert first[0].profile_id == "main"
+    assert first[0].media_format == "rgb24"
+    assert len(first[0].payload) == 3 * 2 * 3
+    assert first[0].payload != different[0].payload
+
+
+def test_synthetic_input_honors_cancellation() -> None:
+    token = CancellationToken()
+    packets = SyntheticInput(synthetic_config(frame_count=10)).packets(token)
+    assert next(packets).sequence == 0
+    token.cancel()
+    assert list(packets) == []
+
+
+def test_local_file_input_reads_chunks_and_finishes_at_eof(tmp_path: Path) -> None:
+    video = tmp_path / "anonymous-fixture.bin"
+    video.write_bytes(b"abcdefghij")
+    source = LocalFileInput(local_config(video))
+    packets = list(source.packets())
+
+    assert source.source_label == "anonymous-fixture.bin"
+    assert [packet.payload for packet in packets] == [b"abcd", b"efgh", b"ij"]
+    assert [packet.sequence for packet in packets] == [0, 1, 2]
+    assert all(packet.timestamp_ns is None for packet in packets)
+    assert all(packet.media_format == "container-bytes" for packet in packets)
+
+
+def test_local_file_input_honors_cancellation(tmp_path: Path) -> None:
+    video = tmp_path / "anonymous-fixture.bin"
+    video.write_bytes(b"abcdefghij")
+    token = CancellationToken()
+    packets = LocalFileInput(local_config(video)).packets(token)
+    assert next(packets).payload == b"abcd"
+    token.cancel()
+    assert list(packets) == []
+
+
+def test_missing_file_error_is_actionable_without_absolute_path(tmp_path: Path) -> None:
+    missing = tmp_path / "missing-video.mp4"
+    with pytest.raises(InputError, match="local video source not found: missing-video.mp4") as caught:
+        list(LocalFileInput(local_config(missing)).packets())
+    assert str(tmp_path) not in str(caught.value)

Brain/tests/rules/test_engine.py

@@ -0,0 +1,81 @@
+from __future__ import annotations
+
+import pytest
+
+from yovision_brain.rules import (
+    AreaDefinition,
+    DirectionalLineDefinition,
+    NormalizedPoint,
+    RuleConfigError,
+    RuleEngine,
+    RuleSet,
+)
+from yovision_brain.vision import BoundingBox, TrackedObject
+
+
+def point(x: float, y: float) -> NormalizedPoint:
+    return NormalizedPoint(x, y)
+
+
+def rules() -> RuleSet:
+    return RuleSet(
+        version="rules-v7",
+        profile_id="main",
+        width=100,
+        height=100,
+        areas=(AreaDefinition("yard", (point(0.2, 0.2), point(0.8, 0.2), point(0.8, 0.8), point(0.2, 0.8))),),
+        directional_lines=(DirectionalLineDefinition("gate", point(0.5, 0.1), point(0.5, 0.9), "left_to_right", 0.01),),
+    )
+
+
+def track(track_id: str, anchor_x: int, anchor_y: int, sequence: int = 0) -> TrackedObject:
+    return TrackedObject(track_id, BoundingBox(anchor_x - 1, anchor_y - 2, anchor_x + 1, anchor_y), "anonymous_target", 1.0, sequence, sequence)
+
+
+def decisions(engine: RuleEngine, item: TrackedObject):
+    return engine.evaluate((item,), profile_id="main", width=100, height=100)
+
+
+def test_area_outside_entered_inside_and_boundary() -> None:
+    engine = RuleEngine(rules())
+    assert decisions(engine, track("one", 10, 50))[0].state == "outside"
+    entered = decisions(engine, track("one", 20, 50, 1))[0]
+    assert (entered.state, entered.triggered) == ("entered", True)
+    inside = decisions(engine, track("one", 50, 50, 2))[0]
+    assert (inside.state, inside.triggered) == ("inside", False)
+    assert inside.config_version == "rules-v7"
+
+
+def test_direction_and_reverse_crossing_are_distinct() -> None:
+    engine = RuleEngine(rules())
+    decisions(engine, track("one", 40, 50))
+    forward = decisions(engine, track("one", 60, 50, 1))[1]
+    assert (forward.state, forward.triggered) == ("triggered", True)
+
+    reverse_engine = RuleEngine(rules())
+    decisions(reverse_engine, track("two", 60, 50))
+    reverse = decisions(reverse_engine, track("two", 40, 50, 1))[1]
+    assert (reverse.state, reverse.triggered) == ("reverse_crossing", False)
+
+
+def test_line_deadband_prevents_jitter_trigger() -> None:
+    engine = RuleEngine(rules())
+    decisions(engine, track("one", 40, 50))
+    on_line = decisions(engine, track("one", 50, 50, 1))[1]
+    assert (on_line.state, on_line.triggered) == ("on_line", False)
+    triggered = decisions(engine, track("one", 60, 50, 2))[1]
+    assert triggered.triggered is True
+
+
+def test_profile_resolution_mismatch_is_rejected() -> None:
+    with pytest.raises(RuleConfigError, match="Profile/resolution"):
+        RuleEngine(rules()).evaluate((track("one", 20, 20),), profile_id="sub", width=100, height=100)
+
+
+def test_invalid_polygon_line_and_duplicate_ids_are_rejected() -> None:
+    with pytest.raises(RuleConfigError, match="non-degenerate"):
+        RuleSet("v", "main", 10, 10, areas=(AreaDefinition("bad", (point(0, 0), point(0.5, 0.5), point(1, 1))),))
+    with pytest.raises(RuleConfigError, match="distinct endpoints"):
+        RuleSet("v", "main", 10, 10, directional_lines=(DirectionalLineDefinition("bad", point(0, 0), point(0, 0), "left_to_right"),))
+    with pytest.raises(RuleConfigError, match="unique"):
+        RuleSet("v", "main", 10, 10, areas=(AreaDefinition("same", (point(0, 0), point(1, 0), point(0, 1))),), directional_lines=(DirectionalLineDefinition("same", point(0, 0), point(1, 1), "left_to_right"),))

Brain/tests/vision/test_detection_tracking.py

@@ -0,0 +1,69 @@
+from __future__ import annotations
+
+import pytest
+
+from yovision_brain.decode import DecodedFrame
+from yovision_brain.vision import (
+    BoundingBox,
+    Detection,
+    LumaBlobDetector,
+    SingleStreamTracker,
+    TorchLumaBlobDetector,
+)
+
+
+def frame(payload: bytes, *, sequence: int = 0, width: int = 4, height: int = 3) -> DecodedFrame:
+    return DecodedFrame(sequence, sequence * 40_000_000, "camera", "main", width, height, "rgb24", payload)
+
+
+def rgb(values: list[int]) -> bytes:
+    return b"".join(bytes((value, value, value)) for value in values)
+
+
+def detection(left: int, top: int, right: int, bottom: int) -> Detection:
+    return Detection(BoundingBox(left, top, right, bottom), "anonymous_target", 0.9)
+
+
+def test_detector_emits_only_anonymous_observations() -> None:
+    payload = rgb([0, 255, 255, 0, 0, 255, 255, 0, 0, 0, 0, 0])
+    result = LumaBlobDetector(minimum_area=2).detect(frame(payload))
+    assert result == (Detection(BoundingBox(1, 0, 3, 2), "anonymous_target", 1.0),)
+    assert LumaBlobDetector.metadata.weights == "none"
+    assert "external model license" in LumaBlobDetector.metadata.license
+
+
+def test_empty_frame_has_no_detection() -> None:
+    assert LumaBlobDetector().detect(frame(rgb([0] * 12))) == ()
+
+
+def test_tracker_keeps_session_id_across_motion_and_short_occlusion() -> None:
+    tracker = SingleStreamTracker(iou_threshold=0.1, max_missed=2)
+    first = tracker.update((detection(0, 0, 3, 3),), frame_sequence=0, timestamp_ns=0)
+    assert first[0].track_id == "track-000001"
+    assert tracker.update((), frame_sequence=1, timestamp_ns=1) == ()
+    resumed = tracker.update((detection(1, 0, 4, 3),), frame_sequence=2, timestamp_ns=2)
+    assert resumed[0].track_id == "track-000001"
+    assert tracker.finish() == ("track-000001",)
+
+
+def test_disappeared_track_ends_and_new_target_gets_new_id() -> None:
+    tracker = SingleStreamTracker(max_missed=1)
+    first = tracker.update((detection(0, 0, 2, 2),), frame_sequence=0, timestamp_ns=0)
+    tracker.update((), frame_sequence=1, timestamp_ns=1)
+    tracker.update((), frame_sequence=2, timestamp_ns=2)
+    second = tracker.update((detection(0, 0, 2, 2),), frame_sequence=3, timestamp_ns=3)
+    assert first[0].track_id == "track-000001"
+    assert second[0].track_id == "track-000002"
+
+
+def test_track_ids_are_session_local() -> None:
+    one = SingleStreamTracker().update((detection(0, 0, 1, 1),), frame_sequence=0, timestamp_ns=0)
+    two = SingleStreamTracker().update((detection(0, 0, 1, 1),), frame_sequence=0, timestamp_ns=0)
+    assert one[0].track_id == two[0].track_id == "track-000001"
+
+
+def test_torch_backend_cpu_smoke_uses_no_external_weights() -> None:
+    pytest.importorskip("torch")
+    result = TorchLumaBlobDetector().detect(frame(rgb([0, 255] + [0] * 10)))
+    assert result[0].category == "anonymous_target"
+    assert TorchLumaBlobDetector.metadata.weights == "none"

Sense/config/mediamtx-shards.example.json

@@ -0,0 +1,9 @@
+[
+  {
+    "id": "secondary",
+    "name": "备用媒体分片",
+    "mode": "external",
+    "controlAPI": "http://127.0.0.1:19997",
+    "capacity": 24
+  }
+]

Sense/config/sense.demo.env.example

@@ -13,6 +13,8 @@ SENSE_MEDIAMTX_MODE=disabled
 SENSE_MEDIAMTX_BINARY=
 SENSE_MEDIAMTX_CONFIG=
 SENSE_MEDIAMTX_API=http://127.0.0.1:9997
+SENSE_MEDIAMTX_CAPACITY=
+SENSE_MEDIAMTX_SHARDS_FILE=
 SENSE_WEB_ROOT=web
 SENSE_AUTO_MIGRATE=true
 SENSE_POSTGRES_BIN=

Sense/config/sense.env.example

@@ -13,6 +13,10 @@ SENSE_MEDIAMTX_MODE=managed
 SENSE_MEDIAMTX_BINARY=bin\mediamtx.exe
 SENSE_MEDIAMTX_CONFIG=config\mediamtx.yml
 SENSE_MEDIAMTX_API=http://127.0.0.1:9997
+# Leave capacity empty to use the current database quota. Optional extra
+# shards are read from a repository-external JSON file and must use loopback APIs.
+SENSE_MEDIAMTX_CAPACITY=
+SENSE_MEDIAMTX_SHARDS_FILE=
 SENSE_WEB_ROOT=web
 SENSE_AUTO_MIGRATE=true
 SENSE_POSTGRES_BIN=

Sense/scripts/build/build-windows.ps1

@@ -81,6 +81,7 @@ try {
     Copy-Item -LiteralPath (Join-Path $senseRoot 'config\sense.demo.env.example') -Destination (Join-Path $staging 'config\sense.demo.env.example')
     Copy-Item -LiteralPath (Join-Path $senseRoot 'config\sense.demo.env.example') -Destination (Join-Path $staging 'config\sense.demo.env')
     Copy-Item -LiteralPath (Join-Path $senseRoot 'config\mediamtx.yml') -Destination (Join-Path $staging 'config\mediamtx.yml')
+    Copy-Item -LiteralPath (Join-Path $senseRoot 'config\mediamtx-shards.example.json') -Destination (Join-Path $staging 'config\mediamtx-shards.example.json')
     Copy-Item -LiteralPath (Join-Path $serverRoot 'config\db.sql') -Destination (Join-Path $staging 'config\db.sql')
     Copy-Item -LiteralPath (Join-Path $serverRoot 'config\pg.sql') -Destination (Join-Path $staging 'config\pg.sql')
     Copy-Item -LiteralPath (Join-Path $senseRoot 'README-WINDOWS.md') -Destination (Join-Path $staging 'README-WINDOWS.md')

Sense/scripts/build/test-package.ps1

@@ -9,7 +9,7 @@ $required = @(
     'migrate-sense.bat', 'backup-sense.bat', 'restore-sense.bat',
     'initialize-admin.bat', 'README-WINDOWS.md', 'config\sense.env',
     'config\sense.env.example', 'config\sense.demo.env',
-    'config\mediamtx.yml', 'config\db.sql', 'config\pg.sql',
+    'config\mediamtx.yml', 'config\mediamtx-shards.example.json', 'config\db.sql', 'config\pg.sql',
     'web\index.html', 'scripts\runtime\sense-common.ps1'
 )
 foreach ($relative in $required) {

Sense/scripts/runtime/sense-common.ps1

@@ -7,7 +7,8 @@ $script:SenseAllowedEnvironment = @(
     'SENSE_CREDENTIAL_KEY', 'SENSE_ONVIF_DISCOVERY_IP',
     'SENSE_ONVIF_ALLOWED_CIDRS', 'SENSE_MEDIAMTX_MODE',
     'SENSE_MEDIAMTX_BINARY', 'SENSE_MEDIAMTX_CONFIG',
-    'SENSE_MEDIAMTX_API', 'SENSE_WEB_ROOT', 'SENSE_AUTO_MIGRATE',
+    'SENSE_MEDIAMTX_API', 'SENSE_MEDIAMTX_CAPACITY',
+    'SENSE_MEDIAMTX_SHARDS_FILE', 'SENSE_WEB_ROOT', 'SENSE_AUTO_MIGRATE',
     'SENSE_POSTGRES_BIN'
 )
 
@@ -185,6 +186,7 @@ function Initialize-SenseRuntime {
     }
     $mediaBinary = Resolve-SenseConfiguredPath -PackageRoot $PackageRoot -Value (Get-SenseEnvironmentValue -Name 'SENSE_MEDIAMTX_BINARY')
     $mediaConfig = Resolve-SenseConfiguredPath -PackageRoot $PackageRoot -Value (Get-SenseEnvironmentValue -Name 'SENSE_MEDIAMTX_CONFIG')
+    $mediaShardsFile = Resolve-SenseConfiguredPath -PackageRoot $PackageRoot -Value (Get-SenseEnvironmentValue -Name 'SENSE_MEDIAMTX_SHARDS_FILE')
     if ($mediaMode -eq 'managed') {
         if (-not (Test-Path -LiteralPath $mediaBinary -PathType Leaf)) { throw 'Managed MediaMTX binary not found. Set SENSE_MEDIAMTX_BINARY to mediamtx.exe.' }
         if (-not (Test-Path -LiteralPath $mediaConfig -PathType Leaf)) { throw 'Managed MediaMTX configuration not found. Set SENSE_MEDIAMTX_CONFIG.' }
@@ -192,6 +194,9 @@ function Initialize-SenseRuntime {
     if ($mediaMode -eq 'external' -and -not (Test-SenseTcpEndpoint -HostName $apiUri.Host -Port $apiUri.Port)) {
         throw "External MediaMTX Control API is unreachable at $($apiUri.Host):$($apiUri.Port)."
     }
+    if (-not [string]::IsNullOrWhiteSpace($mediaShardsFile) -and -not (Test-Path -LiteralPath $mediaShardsFile -PathType Leaf)) {
+        throw 'SENSE_MEDIAMTX_SHARDS_FILE does not exist.'
+    }
 
     $webRoot = Resolve-SenseConfiguredPath -PackageRoot $PackageRoot -Value (Get-SenseEnvironmentValue -Name 'SENSE_WEB_ROOT' -Default 'web')
     if (-not (Test-Path -LiteralPath (Join-Path $webRoot 'index.html') -PathType Leaf)) { throw 'Sense web assets are missing. Rebuild or replace the delivery package.' }
@@ -205,6 +210,7 @@ function Initialize-SenseRuntime {
         [Environment]::SetEnvironmentVariable('SENSE_MEDIAMTX_CONFIG', '', 'Process')
     }
     [Environment]::SetEnvironmentVariable('SENSE_MEDIAMTX_API', $mediaAPI, 'Process')
+    [Environment]::SetEnvironmentVariable('SENSE_MEDIAMTX_SHARDS_FILE', $mediaShardsFile, 'Process')
 
     $runtimeDir = Join-Path $PackageRoot 'data\runtime'
     $logDir = Join-Path $PackageRoot 'logs'

Sense/server/app/admin/router/sense_edge_node.go

@@ -0,0 +1,19 @@
+package router
+
+import (
+	"github.com/gin-gonic/gin"
+	jwt "github.com/go-admin-team/go-admin-core/sdk/pkg/jwtauth"
+
+	"git.ilapage.cn/ila/yovision/Sense/server/app/sense/edge_node"
+	"git.ilapage.cn/ila/yovision/Sense/server/common/actions"
+	"git.ilapage.cn/ila/yovision/Sense/server/common/middleware"
+)
+
+func init() { routerCheckRole = append(routerCheckRole, registerSenseEdgeNodeRouter) }
+
+func registerSenseEdgeNodeRouter(v1 *gin.RouterGroup, auth *jwt.GinJWTMiddleware) {
+	api := &edge_node.API{}
+	r := v1.Group("/edge-nodes").Use(auth.MiddlewareFunc()).Use(middleware.AuthCheckRole()).Use(actions.PermissionAction())
+	r.GET("", api.List)
+	r.GET("/:id", api.Get)
+}

Sense/server/app/admin/router/sense_media_shard.go

@@ -0,0 +1,20 @@
+package router
+
+import (
+	"github.com/gin-gonic/gin"
+	jwt "github.com/go-admin-team/go-admin-core/sdk/pkg/jwtauth"
+
+	"git.ilapage.cn/ila/yovision/Sense/server/app/sense/media_shard"
+	"git.ilapage.cn/ila/yovision/Sense/server/common/actions"
+	"git.ilapage.cn/ila/yovision/Sense/server/common/middleware"
+)
+
+func init() { routerCheckRole = append(routerCheckRole, registerSenseMediaShardRouter) }
+
+func registerSenseMediaShardRouter(v1 *gin.RouterGroup, auth *jwt.GinJWTMiddleware) {
+	api := &media_shard.API{}
+	r := v1.Group("/media-shards").Use(auth.MiddlewareFunc()).Use(middleware.AuthCheckRole()).Use(actions.PermissionAction())
+	r.GET("", api.List)
+	r.GET("/:id", api.Get)
+	r.GET("/:id/migration-preflight", api.Preflight)
+}

Sense/server/app/admin/router/sense_ops_alert.go

@@ -0,0 +1,22 @@
+package router
+
+import (
+	"github.com/gin-gonic/gin"
+	jwt "github.com/go-admin-team/go-admin-core/sdk/pkg/jwtauth"
+
+	"git.ilapage.cn/ila/yovision/Sense/server/app/sense/ops_alert"
+	"git.ilapage.cn/ila/yovision/Sense/server/common/actions"
+	"git.ilapage.cn/ila/yovision/Sense/server/common/middleware"
+)
+
+func init() { routerCheckRole = append(routerCheckRole, registerSenseOpsAlertRouter) }
+
+func registerSenseOpsAlertRouter(v1 *gin.RouterGroup, auth *jwt.GinJWTMiddleware) {
+	api := &ops_alert.API{}
+	r := v1.Group("/ops-alerts").Use(auth.MiddlewareFunc()).Use(middleware.AuthCheckRole()).Use(actions.PermissionAction())
+	r.GET("", api.List)
+	r.GET("/:id", api.Get)
+	r.POST("/evaluate", api.Evaluate)
+	r.POST("/:id/acknowledge", api.Acknowledge)
+	r.POST("/:id/recover", api.Recover)
+}

Sense/server/app/admin/router/sense_ops_alert_test.go

@@ -0,0 +1,32 @@
+package router
+
+import (
+	"github.com/gin-gonic/gin"
+	jwt "github.com/go-admin-team/go-admin-core/sdk/pkg/jwtauth"
+	"net/http"
+	"testing"
+)
+
+func TestSenseOpsAlertRoutes(t *testing.T) {
+	gin.SetMode(gin.TestMode)
+	engine := gin.New()
+	registerSenseOpsAlertRouter(engine.Group("/api/v1"), &jwt.GinJWTMiddleware{})
+	wanted := map[string]bool{
+		http.MethodGet + " /api/v1/ops-alerts":                  false,
+		http.MethodGet + " /api/v1/ops-alerts/:id":              false,
+		http.MethodPost + " /api/v1/ops-alerts/evaluate":        false,
+		http.MethodPost + " /api/v1/ops-alerts/:id/acknowledge": false,
+		http.MethodPost + " /api/v1/ops-alerts/:id/recover":     false,
+	}
+	for _, route := range engine.Routes() {
+		key := route.Method + " " + route.Path
+		if _, ok := wanted[key]; ok {
+			wanted[key] = true
+		}
+	}
+	for route, found := range wanted {
+		if !found {
+			t.Fatalf("route not registered: %s", route)
+		}
+	}
+}

Sense/server/app/admin/router/sense_outbox.go

@@ -0,0 +1,19 @@
+package router
+
+import (
+	"github.com/gin-gonic/gin"
+	jwt "github.com/go-admin-team/go-admin-core/sdk/pkg/jwtauth"
+
+	"git.ilapage.cn/ila/yovision/Sense/server/app/sense/outbox"
+	"git.ilapage.cn/ila/yovision/Sense/server/common/actions"
+	"git.ilapage.cn/ila/yovision/Sense/server/common/middleware"
+)
+
+func init() { routerCheckRole = append(routerCheckRole, registerSenseOutboxRouter) }
+func registerSenseOutboxRouter(v1 *gin.RouterGroup, auth *jwt.GinJWTMiddleware) {
+	api := &outbox.API{}
+	r := v1.Group("/outbox").Use(auth.MiddlewareFunc()).Use(middleware.AuthCheckRole()).Use(actions.PermissionAction())
+	r.GET("", api.List)
+	r.GET("/:id", api.Get)
+	r.POST("/:id/requeue", api.Requeue)
+}

Sense/server/app/admin/router/sense_outbox_test.go

@@ -0,0 +1,26 @@
+package router
+
+import (
+	"github.com/gin-gonic/gin"
+	jwt "github.com/go-admin-team/go-admin-core/sdk/pkg/jwtauth"
+	"net/http"
+	"testing"
+)
+
+func TestSenseOutboxRoutes(t *testing.T) {
+	gin.SetMode(gin.TestMode)
+	engine := gin.New()
+	registerSenseOutboxRouter(engine.Group("/api/v1"), &jwt.GinJWTMiddleware{})
+	wanted := map[string]bool{http.MethodGet + " /api/v1/outbox": false, http.MethodGet + " /api/v1/outbox/:id": false, http.MethodPost + " /api/v1/outbox/:id/requeue": false}
+	for _, route := range engine.Routes() {
+		key := route.Method + " " + route.Path
+		if _, ok := wanted[key]; ok {
+			wanted[key] = true
+		}
+	}
+	for route, found := range wanted {
+		if !found {
+			t.Fatalf("route not registered: %s", route)
+		}
+	}
+}

Sense/server/app/sense/edge_node/apis.go

@@ -0,0 +1,81 @@
+package edge_node
+
+import (
+	"errors"
+	"net/http"
+	"time"
+
+	"github.com/gin-gonic/gin"
+	"github.com/go-admin-team/go-admin-core/sdk/api"
+	"github.com/go-admin-team/go-admin-core/sdk/pkg/jwtauth/user"
+	coreService "github.com/go-admin-team/go-admin-core/sdk/service"
+
+	"git.ilapage.cn/ila/yovision/Sense/server/common"
+)
+
+const auditSuccess, auditFailure = "1", "2"
+
+type API struct{ api.Api }
+
+func (e *API) service(c *gin.Context) (*Service, error) {
+	base := coreService.Service{}
+	if err := e.MakeContext(c).MakeOrm().MakeService(&base).Errors; err != nil {
+		return nil, err
+	}
+	return NewService(base.Orm), nil
+}
+
+func (e *API) List(c *gin.Context) {
+	service, err := e.service(c)
+	if err != nil {
+		e.writeError(err)
+		return
+	}
+	request := PageRequest{}
+	if err = e.MakeContext(c).Bind(&request).Errors; err != nil {
+		e.audit(c, service, "List", auditFailure, "边缘节点查询条件格式不正确")
+		e.Error(http.StatusBadRequest, err, "查询条件格式不正确")
+		return
+	}
+	response, err := service.List(request)
+	if err != nil {
+		e.audit(c, service, "List", auditFailure, "边缘节点列表查询失败")
+		e.writeError(err)
+		return
+	}
+	e.audit(c, service, "List", auditSuccess, "读取边缘节点列表")
+	e.OK(response, "查询成功")
+}
+
+func (e *API) Get(c *gin.Context) {
+	service, err := e.service(c)
+	if err != nil {
+		e.writeError(err)
+		return
+	}
+	item, err := service.Get(c.Param("id"))
+	if err != nil {
+		e.audit(c, service, "Get", auditFailure, "边缘节点详情查询失败")
+		e.writeError(err)
+		return
+	}
+	e.audit(c, service, "Get", auditSuccess, "读取边缘节点详情 "+item.ID)
+	e.OK(item, "查询成功")
+}
+
+func (e *API) audit(c *gin.Context, service *Service, action, status, remark string) {
+	if err := WriteAudit(service.Orm, Audit{Action: action, Method: c.Request.Method, Status: status, Username: user.GetUserName(c), UserID: user.GetUserId(c), ClientIP: common.GetClientIP(c), Route: c.FullPath(), Remark: remark, At: time.Now()}); err != nil {
+		api.GetRequestLogger(c).Errorf("edge node audit failed: %s", err.Error())
+	}
+}
+
+func (e *API) writeError(err error) {
+	switch {
+	case errors.Is(err, ErrInvalidQuery):
+		e.Error(http.StatusBadRequest, err, err.Error())
+	case errors.Is(err, ErrNotFound):
+		e.Error(http.StatusNotFound, err, err.Error())
+	default:
+		e.Error(http.StatusInternalServerError, err, "边缘节点查询失败")
+	}
+}

Sense/server/app/sense/edge_node/audit.go

@@ -0,0 +1,21 @@
+package edge_node
+
+import (
+	"time"
+
+	"gorm.io/gorm"
+
+	adminModels "git.ilapage.cn/ila/yovision/Sense/server/app/admin/models"
+)
+
+type Audit struct {
+	Action, Method, Status, Username, ClientIP, Route, Remark string
+	UserID                                                    int
+	At                                                        time.Time
+}
+
+func WriteAudit(db *gorm.DB, input Audit) error {
+	model := adminModels.SysOperaLog{Title: "边缘节点", BusinessType: "other", Method: "edge_node.API." + input.Action, RequestMethod: input.Method, OperatorType: "1", OperName: input.Username, OperUrl: input.Route, OperIp: input.ClientIP, Status: input.Status, OperTime: input.At.UTC(), Remark: input.Remark, CreatedAt: input.At.UTC(), UpdatedAt: input.At.UTC()}
+	model.CreateBy, model.UpdateBy = input.UserID, input.UserID
+	return db.Create(&model).Error
+}

Sense/server/app/sense/edge_node/dto.go

@@ -0,0 +1,65 @@
+package edge_node
+
+import (
+	"time"
+
+	commonDto "git.ilapage.cn/ila/yovision/Sense/server/common/dto"
+)
+
+const HeartbeatTimeout = 90 * time.Second
+
+type PageRequest struct {
+	commonDto.Pagination `search:"-"`
+}
+
+type Summary struct {
+	Total              int   `json:"total"`
+	Online             int   `json:"online"`
+	Offline            int   `json:"offline"`
+	Recovering         int   `json:"recovering"`
+	LoadUsed           int   `json:"loadUsed"`
+	LoadCapacity       int   `json:"loadCapacity"`
+	BackfillQueueDepth int   `json:"backfillQueueDepth"`
+	HeartbeatTimeout   int64 `json:"heartbeatTimeoutSeconds"`
+}
+
+type Response struct {
+	ID                  string    `json:"id"`
+	Name                string    `json:"name"`
+	Location            string    `json:"location"`
+	Status              string    `json:"status"`
+	RuntimeVersion      string    `json:"runtimeVersion"`
+	ModelVersion        string    `json:"modelVersion"`
+	StartedAt           time.Time `json:"startedAt"`
+	UptimeSeconds       int64     `json:"uptimeSeconds"`
+	LastHeartbeatAt     time.Time `json:"lastHeartbeatAt"`
+	LastCollectedAt     time.Time `json:"lastCollectedAt"`
+	FreshnessSeconds    int64     `json:"freshnessSeconds"`
+	Stale               bool      `json:"stale"`
+	LoadUsed            int       `json:"loadUsed"`
+	LoadCapacity        int       `json:"loadCapacity"`
+	ControlTunnelStatus string    `json:"controlTunnelStatus"`
+	ControlTunnelDetail string    `json:"controlTunnelDetail"`
+	ControlLatencyMs    int       `json:"controlLatencyMs"`
+	VideoPlaneStatus    string    `json:"videoPlaneStatus"`
+	VideoPlaneDetail    string    `json:"videoPlaneDetail"`
+	ActiveStreamCount   int       `json:"activeStreamCount"`
+	BackfillStatus      string    `json:"backfillStatus"`
+	BackfillQueueDepth  int       `json:"backfillQueueDepth"`
+	RecoveryPhase       string    `json:"recoveryPhase"`
+	ProjectionVersion   int64     `json:"projectionVersion"`
+	Events              []Event   `json:"events,omitempty"`
+}
+
+type PageResponse struct {
+	Summary Summary    `json:"summary"`
+	List    []Response `json:"list"`
+	Count   int64      `json:"count"`
+}
+
+// HeartbeatSample is an internal Sense adapter input. It is intentionally not
+// exposed as an HTTP contract by this task.
+type HeartbeatSample struct {
+	Node
+	CollectedAt time.Time
+}

Sense/server/app/sense/edge_node/fixture.go

@@ -0,0 +1,20 @@
+package edge_node
+
+import (
+	"time"
+
+	"gorm.io/gorm"
+	"gorm.io/gorm/clause"
+)
+
+// SeedSyntheticFixture is explicit test/development data. Production startup
+// and migrations never call it.
+func SeedSyntheticFixture(db *gorm.DB, now time.Time) error {
+	now = now.UTC().Truncate(time.Second)
+	items := []Node{
+		{ID: "SEN-EDGE-01", Name: "主楼边缘节点", Location: "主楼机房", RuntimeVersion: "sense-edge 0.1.0", ModelVersion: "detector-v3", StartedAt: now.Add(-7 * 24 * time.Hour), LastHeartbeatAt: now.Add(-18 * time.Second), LastCollectedAt: now.Add(-18 * time.Second), LoadUsed: 6, LoadCapacity: 16, ControlTunnelStatus: ChannelReady, ControlTunnelDetail: "控制隧道正常", ControlLatencyMs: 24, VideoPlaneStatus: ChannelReady, VideoPlaneDetail: "6 路视频正常", ActiveStreamCount: 6, BackfillStatus: BackfillIdle, ProjectionVersion: 1},
+		{ID: "SEN-EDGE-02", Name: "仓库边缘节点", Location: "仓库弱电间", RuntimeVersion: "sense-edge 0.1.0", ModelVersion: "detector-v3", StartedAt: now.Add(-3 * 24 * time.Hour), LastHeartbeatAt: now.Add(-4 * time.Minute), LastCollectedAt: now.Add(-4 * time.Minute), LoadUsed: 4, LoadCapacity: 16, ControlTunnelStatus: ChannelReady, ControlTunnelDetail: "最后已知：控制隧道正常", ControlLatencyMs: 31, VideoPlaneStatus: ChannelReady, VideoPlaneDetail: "最后已知：4 路视频正常", ActiveStreamCount: 4, BackfillStatus: BackfillPending, BackfillQueueDepth: 12, ProjectionVersion: 1},
+		{ID: "SEN-EDGE-03", Name: "南门边缘节点", Location: "南门岗亭", RuntimeVersion: "sense-edge 0.1.0", ModelVersion: "detector-v3", StartedAt: now.Add(-10 * time.Hour), LastHeartbeatAt: now.Add(-12 * time.Second), LastCollectedAt: now.Add(-12 * time.Second), LoadUsed: 2, LoadCapacity: 8, ControlTunnelStatus: ChannelReady, ControlTunnelDetail: "控制隧道已恢复", ControlLatencyMs: 46, VideoPlaneStatus: ChannelUnavailable, VideoPlaneDetail: "视频数据面恢复中", ActiveStreamCount: 0, BackfillStatus: BackfillPending, BackfillQueueDepth: 5, RecoveryPhase: "video_reconnecting", ProjectionVersion: 2},
+	}
+	return db.Clauses(clause.OnConflict{DoNothing: true}).Create(&items).Error
+}

Sense/server/app/sense/edge_node/models.go

@@ -0,0 +1,61 @@
+package edge_node
+
+import (
+	"time"
+
+	common "git.ilapage.cn/ila/yovision/Sense/server/common/models"
+)
+
+const (
+	StatusOnline     = "online"
+	StatusOffline    = "offline"
+	StatusRecovering = "recovering"
+
+	ChannelReady       = "ready"
+	ChannelUnavailable = "unavailable"
+	BackfillIdle       = "idle"
+	BackfillPending    = "pending"
+)
+
+// Node is the Sense-owned last-known projection of one edge runtime. It is
+// deliberately not a shared identity or a cross-product protocol model.
+type Node struct {
+	ID                  string    `gorm:"size:64;primaryKey" json:"id"`
+	Name                string    `gorm:"size:128;not null" json:"name"`
+	Location            string    `gorm:"size:256;not null;default:''" json:"location"`
+	RuntimeVersion      string    `gorm:"size:64;not null;default:''" json:"runtimeVersion"`
+	ModelVersion        string    `gorm:"size:64;not null;default:''" json:"modelVersion"`
+	StartedAt           time.Time `gorm:"not null" json:"startedAt"`
+	LastHeartbeatAt     time.Time `gorm:"not null;index" json:"lastHeartbeatAt"`
+	LastCollectedAt     time.Time `gorm:"not null" json:"lastCollectedAt"`
+	LoadUsed            int       `gorm:"not null;default:0" json:"loadUsed"`
+	LoadCapacity        int       `gorm:"not null;default:0" json:"loadCapacity"`
+	ControlTunnelStatus string    `gorm:"size:32;not null;default:'unavailable'" json:"controlTunnelStatus"`
+	ControlTunnelDetail string    `gorm:"size:256;not null;default:''" json:"controlTunnelDetail"`
+	ControlLatencyMs    int       `gorm:"not null;default:0" json:"controlLatencyMs"`
+	VideoPlaneStatus    string    `gorm:"size:32;not null;default:'unavailable'" json:"videoPlaneStatus"`
+	VideoPlaneDetail    string    `gorm:"size:256;not null;default:''" json:"videoPlaneDetail"`
+	ActiveStreamCount   int       `gorm:"not null;default:0" json:"activeStreamCount"`
+	BackfillStatus      string    `gorm:"size:32;not null;default:'idle'" json:"backfillStatus"`
+	BackfillQueueDepth  int       `gorm:"not null;default:0" json:"backfillQueueDepth"`
+	RecoveryPhase       string    `gorm:"size:32;not null;default:''" json:"recoveryPhase"`
+	ProjectionVersion   int64     `gorm:"not null;default:1" json:"projectionVersion"`
+	common.ControlBy
+	common.ModelTime
+}
+
+func (Node) TableName() string { return "sense_edge_nodes" }
+
+// Event records projection state transitions without storing credentials or
+// raw heartbeat payloads.
+type Event struct {
+	ID         uint64    `gorm:"primaryKey;autoIncrement" json:"id"`
+	NodeID     string    `gorm:"size:64;not null;index" json:"nodeId"`
+	EventType  string    `gorm:"size:32;not null;index" json:"eventType"`
+	FromStatus string    `gorm:"size:32;not null;default:''" json:"fromStatus"`
+	ToStatus   string    `gorm:"size:32;not null" json:"toStatus"`
+	Detail     string    `gorm:"size:256;not null;default:''" json:"detail"`
+	OccurredAt time.Time `gorm:"not null;index" json:"occurredAt"`
+}
+
+func (Event) TableName() string { return "sense_edge_node_events" }

Sense/server/app/sense/edge_node/service.go

@@ -0,0 +1,167 @@
+package edge_node
+
+import (
+	"context"
+	"errors"
+	"fmt"
+	"strings"
+	"time"
+
+	coreService "github.com/go-admin-team/go-admin-core/sdk/service"
+	"gorm.io/gorm"
+	"gorm.io/gorm/clause"
+)
+
+var (
+	ErrInvalidQuery  = errors.New("边缘节点查询条件不符合要求")
+	ErrNotFound      = errors.New("边缘节点不存在")
+	ErrInvalidSample = errors.New("边缘节点心跳样本不符合要求")
+)
+
+type Service struct {
+	coreService.Service
+	Now func() time.Time
+}
+
+func NewService(db *gorm.DB) *Service {
+	return &Service{Service: coreService.Service{Orm: db}, Now: time.Now}
+}
+
+func (s *Service) List(request PageRequest) (PageResponse, error) {
+	if request.GetPageSize() > 100 {
+		return PageResponse{}, ErrInvalidQuery
+	}
+	var count int64
+	if err := s.Orm.Model(&Node{}).Count(&count).Error; err != nil {
+		return PageResponse{}, fmt.Errorf("count edge nodes: %w", err)
+	}
+	var models []Node
+	if err := s.Orm.Order("name ASC, id ASC").Limit(request.GetPageSize()).Offset((request.GetPageIndex() - 1) * request.GetPageSize()).Find(&models).Error; err != nil {
+		return PageResponse{}, fmt.Errorf("list edge nodes: %w", err)
+	}
+	result := PageResponse{List: make([]Response, 0, len(models)), Count: count}
+	result.Summary.HeartbeatTimeout = int64(HeartbeatTimeout / time.Second)
+	var all []Node
+	if err := s.Orm.Find(&all).Error; err != nil {
+		return PageResponse{}, fmt.Errorf("summarize edge nodes: %w", err)
+	}
+	result.Summary.Total = len(all)
+	for _, item := range all {
+		status := s.status(item)
+		switch status {
+		case StatusOffline:
+			result.Summary.Offline++
+		case StatusRecovering:
+			result.Summary.Recovering++
+		default:
+			result.Summary.Online++
+		}
+		result.Summary.LoadUsed += item.LoadUsed
+		result.Summary.LoadCapacity += item.LoadCapacity
+		result.Summary.BackfillQueueDepth += item.BackfillQueueDepth
+	}
+	for _, item := range models {
+		result.List = append(result.List, s.response(item, nil))
+	}
+	return result, nil
+}
+
+func (s *Service) Get(id string) (Response, error) {
+	id = strings.TrimSpace(id)
+	if id == "" || len(id) > 64 {
+		return Response{}, ErrInvalidQuery
+	}
+	var model Node
+	if err := s.Orm.First(&model, "id = ?", id).Error; err != nil {
+		if errors.Is(err, gorm.ErrRecordNotFound) {
+			return Response{}, ErrNotFound
+		}
+		return Response{}, fmt.Errorf("get edge node: %w", err)
+	}
+	var events []Event
+	if err := s.Orm.Where("node_id = ?", id).Order("occurred_at DESC, id DESC").Limit(20).Find(&events).Error; err != nil {
+		return Response{}, fmt.Errorf("list edge node events: %w", err)
+	}
+	return s.response(model, events), nil
+}
+
+// ApplyHeartbeat updates the Sense-owned projection atomically and records
+// only state transitions. Callers are internal adapters, not public APIs.
+func (s *Service) ApplyHeartbeat(ctx context.Context, sample HeartbeatSample) error {
+	now := sample.CollectedAt.UTC()
+	if now.IsZero() {
+		now = s.now()
+	}
+	sample.ID = strings.TrimSpace(sample.ID)
+	if sample.ID == "" || len(sample.ID) > 64 || strings.TrimSpace(sample.Name) == "" || sample.LastHeartbeatAt.IsZero() || sample.StartedAt.IsZero() || sample.LoadUsed < 0 || sample.LoadCapacity < 0 || sample.LoadUsed > sample.LoadCapacity || sample.BackfillQueueDepth < 0 {
+		return ErrInvalidSample
+	}
+	sample.LastHeartbeatAt = sample.LastHeartbeatAt.UTC()
+	sample.LastCollectedAt = now
+	return s.Orm.WithContext(ctx).Transaction(func(tx *gorm.DB) error {
+		var previous Node
+		err := tx.Clauses(clause.Locking{Strength: "UPDATE"}).First(&previous, "id = ?", sample.ID).Error
+		if err != nil && !errors.Is(err, gorm.ErrRecordNotFound) {
+			return fmt.Errorf("lock edge node projection: %w", err)
+		}
+		from := ""
+		if err == nil {
+			from = statusAt(previous, now)
+			sample.CreatedAt = previous.CreatedAt
+			sample.ProjectionVersion = previous.ProjectionVersion + 1
+		} else {
+			sample.ProjectionVersion = 1
+		}
+		if err = tx.Save(&sample.Node).Error; err != nil {
+			return fmt.Errorf("save edge node projection: %w", err)
+		}
+		to := statusAt(sample.Node, now)
+		if from == to && from != "" {
+			return nil
+		}
+		if from == StatusOffline {
+			timeoutAt := previous.LastHeartbeatAt.UTC().Add(HeartbeatTimeout)
+			if err = tx.Create(&Event{NodeID: sample.ID, EventType: "heartbeat_timeout", FromStatus: StatusOnline, ToStatus: StatusOffline, Detail: "节点心跳超过 90 秒未更新", OccurredAt: timeoutAt}).Error; err != nil {
+				return err
+			}
+		}
+		eventType, detail := "heartbeat_received", "收到节点首次心跳"
+		if from == StatusOffline {
+			eventType, detail = "node_recovered", "节点心跳恢复，通道状态继续独立收敛"
+		} else if to == StatusRecovering {
+			eventType, detail = "recovery_started", "节点进入恢复阶段"
+		}
+		return tx.Create(&Event{NodeID: sample.ID, EventType: eventType, FromStatus: from, ToStatus: to, Detail: detail, OccurredAt: now}).Error
+	})
+}
+
+func (s *Service) response(model Node, events []Event) Response {
+	now := s.now()
+	freshness := int64(now.Sub(model.LastHeartbeatAt.UTC()).Seconds())
+	if freshness < 0 {
+		freshness = 0
+	}
+	uptime := int64(model.LastHeartbeatAt.UTC().Sub(model.StartedAt.UTC()).Seconds())
+	if uptime < 0 {
+		uptime = 0
+	}
+	return Response{ID: model.ID, Name: model.Name, Location: model.Location, Status: statusAt(model, now), RuntimeVersion: model.RuntimeVersion, ModelVersion: model.ModelVersion, StartedAt: model.StartedAt, UptimeSeconds: uptime, LastHeartbeatAt: model.LastHeartbeatAt, LastCollectedAt: model.LastCollectedAt, FreshnessSeconds: freshness, Stale: freshness > int64(HeartbeatTimeout/time.Second), LoadUsed: model.LoadUsed, LoadCapacity: model.LoadCapacity, ControlTunnelStatus: model.ControlTunnelStatus, ControlTunnelDetail: model.ControlTunnelDetail, ControlLatencyMs: model.ControlLatencyMs, VideoPlaneStatus: model.VideoPlaneStatus, VideoPlaneDetail: model.VideoPlaneDetail, ActiveStreamCount: model.ActiveStreamCount, BackfillStatus: model.BackfillStatus, BackfillQueueDepth: model.BackfillQueueDepth, RecoveryPhase: model.RecoveryPhase, ProjectionVersion: model.ProjectionVersion, Events: events}
+}
+
+func (s *Service) status(model Node) string { return statusAt(model, s.now()) }
+func (s *Service) now() time.Time {
+	if s.Now != nil {
+		return s.Now().UTC()
+	}
+	return time.Now().UTC()
+}
+
+func statusAt(model Node, now time.Time) string {
+	if now.UTC().Sub(model.LastHeartbeatAt.UTC()) > HeartbeatTimeout {
+		return StatusOffline
+	}
+	if strings.TrimSpace(model.RecoveryPhase) != "" && model.RecoveryPhase != "converged" {
+		return StatusRecovering
+	}
+	return StatusOnline
+}

Sense/server/app/sense/edge_node/service_test.go

@@ -0,0 +1,103 @@
+package edge_node
+
+import (
+	"context"
+	"errors"
+	"testing"
+	"time"
+
+	"gorm.io/driver/sqlite"
+	"gorm.io/gorm"
+)
+
+func edgeNodeTestService(t *testing.T) (*Service, *gorm.DB, time.Time) {
+	t.Helper()
+	db, err := gorm.Open(sqlite.Open(":memory:"), &gorm.Config{})
+	if err != nil {
+		t.Fatal(err)
+	}
+	if err = db.AutoMigrate(&Node{}, &Event{}); err != nil {
+		t.Fatal(err)
+	}
+	now := time.Date(2026, 8, 28, 4, 0, 0, 0, time.UTC)
+	service := NewService(db)
+	service.Now = func() time.Time { return now }
+	return service, db, now
+}
+
+func TestListClassifiesOnlineOfflineAndRecoveringWithoutErasingLastKnownState(t *testing.T) {
+	service, db, now := edgeNodeTestService(t)
+	if err := SeedSyntheticFixture(db, now); err != nil {
+		t.Fatal(err)
+	}
+	page, err := service.List(PageRequest{})
+	if err != nil {
+		t.Fatal(err)
+	}
+	if page.Count != 3 || page.Summary.Online != 1 || page.Summary.Offline != 1 || page.Summary.Recovering != 1 || page.Summary.BackfillQueueDepth != 17 {
+		t.Fatalf("unexpected summary: %+v", page.Summary)
+	}
+	var offline Response
+	for _, item := range page.List {
+		if item.Status == StatusOffline {
+			offline = item
+		}
+	}
+	if !offline.Stale || offline.ControlTunnelStatus != ChannelReady || offline.VideoPlaneStatus != ChannelReady || offline.BackfillQueueDepth != 12 {
+		t.Fatalf("offline projection lost last-known state: %+v", offline)
+	}
+}
+
+func TestApplyHeartbeatRecordsRecoveryAndPreservesIndependentChannelConvergence(t *testing.T) {
+	service, db, now := edgeNodeTestService(t)
+	old := Node{ID: "EDGE-1", Name: "旧节点", StartedAt: now.Add(-time.Hour), LastHeartbeatAt: now.Add(-5 * time.Minute), LastCollectedAt: now.Add(-5 * time.Minute), LoadCapacity: 16, ControlTunnelStatus: ChannelReady, VideoPlaneStatus: ChannelReady, BackfillStatus: BackfillPending, BackfillQueueDepth: 8, ProjectionVersion: 3}
+	if err := db.Create(&old).Error; err != nil {
+		t.Fatal(err)
+	}
+	sample := HeartbeatSample{Node: Node{ID: "EDGE-1", Name: "旧节点", StartedAt: old.StartedAt, LastHeartbeatAt: now.Add(-5 * time.Second), LoadUsed: 4, LoadCapacity: 16, ControlTunnelStatus: ChannelReady, VideoPlaneStatus: ChannelUnavailable, BackfillStatus: BackfillPending, BackfillQueueDepth: 3, RecoveryPhase: "video_reconnecting"}, CollectedAt: now}
+	if err := service.ApplyHeartbeat(context.Background(), sample); err != nil {
+		t.Fatal(err)
+	}
+	item, err := service.Get("EDGE-1")
+	if err != nil {
+		t.Fatal(err)
+	}
+	if item.Status != StatusRecovering || item.ProjectionVersion != 4 || item.VideoPlaneStatus != ChannelUnavailable || item.BackfillQueueDepth != 3 {
+		t.Fatalf("unexpected recovery projection: %+v", item)
+	}
+	if len(item.Events) != 2 || item.Events[0].EventType != "node_recovered" || item.Events[0].FromStatus != StatusOffline || item.Events[0].ToStatus != StatusRecovering || item.Events[1].EventType != "heartbeat_timeout" || item.Events[1].ToStatus != StatusOffline {
+		t.Fatalf("unexpected events: %+v", item.Events)
+	}
+}
+
+func TestApplyHeartbeatRejectsInvalidSampleAndDoesNotPersist(t *testing.T) {
+	service, db, now := edgeNodeTestService(t)
+	err := service.ApplyHeartbeat(context.Background(), HeartbeatSample{Node: Node{ID: "EDGE-2", Name: "节点", StartedAt: now.Add(-time.Hour), LastHeartbeatAt: now, LoadUsed: 17, LoadCapacity: 16}, CollectedAt: now})
+	if !errors.Is(err, ErrInvalidSample) {
+		t.Fatalf("err=%v", err)
+	}
+	var count int64
+	db.Model(&Node{}).Count(&count)
+	if count != 0 {
+		t.Fatalf("count=%d", count)
+	}
+}
+
+func TestGetRejectsMissingOrMalformedID(t *testing.T) {
+	service, _, _ := edgeNodeTestService(t)
+	if _, err := service.Get(""); !errors.Is(err, ErrInvalidQuery) {
+		t.Fatalf("err=%v", err)
+	}
+	if _, err := service.Get("missing"); !errors.Is(err, ErrNotFound) {
+		t.Fatalf("err=%v", err)
+	}
+}
+
+func TestListRejectsOversizedPage(t *testing.T) {
+	service, _, _ := edgeNodeTestService(t)
+	request := PageRequest{}
+	request.PageSize = 101
+	if _, err := service.List(request); !errors.Is(err, ErrInvalidQuery) {
+		t.Fatalf("err=%v", err)
+	}
+}

Sense/server/app/sense/local_event/outbox.go

@@ -0,0 +1,29 @@
+package local_event
+
+import (
+	"context"
+	"encoding/json"
+	"fmt"
+	"time"
+
+	"gorm.io/gorm"
+
+	"git.ilapage.cn/ila/yovision/Sense/server/app/sense/outbox"
+)
+
+// CreateWithOutbox commits the local candidate and its internal delivery
+// record atomically. The payload remains Sense-internal and is not a Bell or
+// Brain contract.
+func CreateWithOutbox(ctx context.Context, db *gorm.DB, candidate EventCandidate, payload map[string]interface{}, now time.Time) error {
+	encoded, err := json.Marshal(payload)
+	if err != nil {
+		return fmt.Errorf("encode local event outbox payload: %w", err)
+	}
+	return db.WithContext(ctx).Transaction(func(tx *gorm.DB) error {
+		if err := tx.Create(&candidate).Error; err != nil {
+			return fmt.Errorf("create local event candidate: %w", err)
+		}
+		_, err = outbox.Enqueue(tx, outbox.EnqueueInput{InternalType: "local_event_candidate", BusinessRef: candidate.ID, IdempotencyKey: "local-event:" + candidate.ID + ":v1", PayloadJSON: encoded}, now)
+		return err
+	})
+}

Sense/server/app/sense/local_event/outbox_test.go

@@ -0,0 +1,46 @@
+package local_event
+
+import (
+	"context"
+	"testing"
+	"time"
+
+	"github.com/google/uuid"
+	"gorm.io/driver/sqlite"
+	"gorm.io/gorm"
+
+	"git.ilapage.cn/ila/yovision/Sense/server/app/sense/outbox"
+)
+
+func TestCreateWithOutboxCommitsAndRollsBackAtomically(t *testing.T) {
+	db, err := gorm.Open(sqlite.Open("file:"+uuid.NewString()+"?mode=memory&cache=shared"), &gorm.Config{})
+	if err != nil {
+		t.Fatal(err)
+	}
+	sqlDB, _ := db.DB()
+	sqlDB.SetMaxOpenConns(1)
+	if err = db.AutoMigrate(&EventCandidate{}, &outbox.Message{}, &outbox.DeliveryRecord{}, &outbox.Attempt{}); err != nil {
+		t.Fatal(err)
+	}
+	now := time.Date(2026, 8, 28, 10, 0, 0, 0, time.UTC)
+	candidate := EventCandidate{ID: uuid.NewString(), OccurredAt: now, SourceRef: "SEN-CAM-01", RuleRef: "rule-1", RuleName: "区域闯入", CandidateState: CandidateStateCandidate, EvidenceState: EvidenceStatePending, RetainUntil: now.Add(24 * time.Hour)}
+	if err = CreateWithOutbox(context.Background(), db, candidate, map[string]interface{}{"eventId": candidate.ID}, now); err != nil {
+		t.Fatal(err)
+	}
+	var candidates, messages int64
+	db.Model(&EventCandidate{}).Count(&candidates)
+	db.Model(&outbox.Message{}).Count(&messages)
+	if candidates != 1 || messages != 1 {
+		t.Fatalf("candidates=%d messages=%d", candidates, messages)
+	}
+	duplicate := candidate
+	duplicate.ID = candidate.ID
+	if err = CreateWithOutbox(context.Background(), db, duplicate, map[string]interface{}{"eventId": duplicate.ID}, now); err == nil {
+		t.Fatal("expected duplicate transaction failure")
+	}
+	db.Model(&EventCandidate{}).Count(&candidates)
+	db.Model(&outbox.Message{}).Count(&messages)
+	if candidates != 1 || messages != 1 {
+		t.Fatalf("atomic rollback failed candidates=%d messages=%d", candidates, messages)
+	}
+}