fix(agent): stabilize PDD share action (#106)

android/app/build.gradle.kts

@@ -11,8 +11,8 @@ android {
         applicationId = "cn.ilapage.goauto.agent"
         minSdk = 23
         targetSdk = 34
-        versionCode = 15
+        versionCode = 16
-        versionName = "0.9.2"
+        versionName = "0.9.3"
 
         testInstrumentationRunner = "androidx.test.runner.AndroidJUnitRunner"
 

android/app/src/main/java/cn/ilapage/goauto/agent/ClipboardRelayActivity.kt

@@ -10,6 +10,7 @@ import android.os.Bundle
 import android.os.Handler
 import android.os.Looper
 import android.os.SystemClock
+import cn.ilapage.goauto.agent.automation.ClipboardReadOutcome
 import java.util.UUID
 import java.util.concurrent.ConcurrentHashMap
 import java.util.concurrent.CountDownLatch
@@ -21,6 +22,11 @@ class ClipboardRelayActivity : Activity() {
     private val pollRunnable = Runnable { readOrRetry() }
     private var completed = false
     private lateinit var pollSession: ClipboardPollSession
+    private var pollCount = 0
+    private var lastMimeAccepted = false
+    private var lastItemCount = 0
+    private var lastContentLength: Int? = null
+    private var lastTimestampFresh = false
 
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)
@@ -38,7 +44,7 @@ class ClipboardRelayActivity : Activity() {
         handler.removeCallbacks(pollRunnable)
         if (!completed) {
             completed = true
-            deliver(intent.getStringExtra(EXTRA_REQUEST_ID).orEmpty(), null)
+            deliver(intent.getStringExtra(EXTRA_REQUEST_ID).orEmpty(), outcome(null))
         }
         super.onDestroy()
     }
@@ -56,6 +62,16 @@ class ClipboardRelayActivity : Activity() {
         val hasPlainText = description?.hasMimeType(ClipDescription.MIMETYPE_TEXT_PLAIN) == true
         val clip = if (hasPlainText) clipboard.primaryClip else null
         val timestampSupported = Build.VERSION.SDK_INT >= Build.VERSION_CODES.O
+        pollCount++
+        lastMimeAccepted = hasPlainText
+        lastItemCount = clip?.itemCount ?: 0
+        lastContentLength = clip?.takeIf { it.itemCount == 1 }?.getItemAt(0)?.text?.length
+        lastTimestampFresh = ClipboardContentPolicy.isTimestampFresh(
+            descriptionPresent = description != null,
+            timestampMillis = if (timestampSupported) description?.timestamp ?: 0L else 0L,
+            timestampSupported = timestampSupported,
+            minTimestampMillis = minTimestamp,
+        )
         val text = ClipboardContentPolicy.freshText(
             descriptionPresent = description != null,
             timestampMillis = if (timestampSupported) description?.timestamp ?: 0L else 0L,
@@ -80,10 +96,19 @@ class ClipboardRelayActivity : Activity() {
         if (completed) return
         completed = true
         handler.removeCallbacks(pollRunnable)
-        deliver(intent.getStringExtra(EXTRA_REQUEST_ID).orEmpty(), value)
+        deliver(intent.getStringExtra(EXTRA_REQUEST_ID).orEmpty(), outcome(value))
         finishRelay()
     }
 
+    private fun outcome(value: String?) = ClipboardReadOutcome(
+        text = value,
+        pollCount = pollCount,
+        mimeAccepted = lastMimeAccepted,
+        itemCount = lastItemCount,
+        contentLength = lastContentLength,
+        timestampFresh = lastTimestampFresh,
+    )
+
     private fun finishRelay() {
         finishAndRemoveTask()
         overridePendingTransition(0, 0)
@@ -96,7 +121,7 @@ class ClipboardRelayActivity : Activity() {
         private const val POLL_INTERVAL_MILLIS = 100L
         private val pending = ConcurrentHashMap<String, PendingRead>()
 
-        fun readFresh(context: Context, minTimestamp: Long, timeoutMillis: Long): CharSequence? {
+        fun readFresh(context: Context, minTimestamp: Long, timeoutMillis: Long): ClipboardReadOutcome {
             val boundedTimeout = timeoutMillis.coerceIn(500L, 10_000L)
             val requestId = UUID.randomUUID().toString()
             val request = PendingRead()
@@ -112,14 +137,14 @@ class ClipboardRelayActivity : Activity() {
             }.getOrDefault(false)
             if (!started) {
                 pending.remove(requestId)
-                return null
+                return ClipboardReadOutcome(text = null)
             }
             request.latch.await(boundedTimeout, TimeUnit.MILLISECONDS)
             pending.remove(requestId)
-            return request.value.get()
+            return request.value.get() ?: ClipboardReadOutcome(text = null)
         }
 
-        private fun deliver(requestId: String, value: String?) {
+        private fun deliver(requestId: String, value: ClipboardReadOutcome) {
             pending[requestId]?.let { request ->
                 request.value.set(value)
                 request.latch.countDown()
@@ -129,7 +154,7 @@ class ClipboardRelayActivity : Activity() {
 
     private class PendingRead {
         val latch = CountDownLatch(1)
-        val value = AtomicReference<String?>(null)
+        val value = AtomicReference<ClipboardReadOutcome?>(null)
     }
 }
 
@@ -175,7 +200,17 @@ internal object ClipboardContentPolicy {
         minTimestampMillis: Long,
     ): String? {
         if (!descriptionPresent || !hasPlainText || itemCount != 1) return null
-        if (timestampSupported && (timestampMillis <= 0L || timestampMillis < minTimestampMillis - TIMESTAMP_TOLERANCE_MILLIS)) return null
+        if (!isTimestampFresh(descriptionPresent, timestampMillis, timestampSupported, minTimestampMillis)) return null
         return text?.takeIf { it.length <= MAX_CLIPBOARD_CHARS }
     }
+
+    fun isTimestampFresh(
+        descriptionPresent: Boolean,
+        timestampMillis: Long,
+        timestampSupported: Boolean,
+        minTimestampMillis: Long,
+    ): Boolean {
+        if (!descriptionPresent) return false
+        return !timestampSupported || (timestampMillis > 0L && timestampMillis >= minTimestampMillis - TIMESTAMP_TOLERANCE_MILLIS)
+    }
 }

android/app/src/main/java/cn/ilapage/goauto/agent/automation/CurrentPageCollection.kt

@@ -1,5 +1,8 @@
 package cn.ilapage.goauto.agent.automation
 
+import cn.ilapage.goauto.agent.persistence.AgentDiagnosticEvent
+import cn.ilapage.goauto.agent.persistence.AgentDiagnosticReason
+import cn.ilapage.goauto.agent.persistence.AgentDiagnosticStage
 import java.net.URI
 
 data class CurrentPageIdentityResult(
@@ -9,6 +12,15 @@ data class CurrentPageIdentityResult(
     val shareUrl: String? = null,
 )
 
+data class ClipboardReadOutcome(
+    val text: CharSequence?,
+    val pollCount: Int = 0,
+    val mimeAccepted: Boolean = false,
+    val itemCount: Int = 0,
+    val contentLength: Int? = null,
+    val timestampFresh: Boolean = false,
+)
+
 enum class CurrentPageRestoreDecision {
     READY,
     BACK_FROM_AGENT,
@@ -49,26 +61,40 @@ object PddShareLinkExtractor {
 
 class CurrentPageIdentityRunner(
     private val driver: PddCollectorDriver,
-    private val readFreshClipboard: (copiedAtMillis: Long, timeoutMillis: Long) -> CharSequence?,
+    private val readFreshClipboard: (copiedAtMillis: Long, timeoutMillis: Long) -> ClipboardReadOutcome,
+    private val taskId: Long = 0,
+    private val diagnostic: (AgentDiagnosticEvent) -> Unit = {},
     private val now: () -> Long = System::currentTimeMillis,
     private val pause: (Long) -> Unit = Thread::sleep,
 ) {
     fun identify(rule: CollectionRule): CurrentPageIdentityResult {
+        val startedAt = now()
         val evidence = rule.pageEvidence ?: return failure("RULE_INVALID", "规则缺少商品页证据")
         val config = rule.currentPageIdentity
-        val detail = waitForPageEvidence(evidence, config.pageTimeoutMs)
+        val prepared = waitForStableShare(evidence, config.shareAliases, config.pageTimeoutMs, startedAt)
-            ?: return failure("CURRENT_PDD_PAGE_NOT_FOUND", "没有找到商品详情页")
+        prepared.problem?.let { return failure(it.code, it.message) }
-        detailProblem(detail)?.let { return failure(it.code, it.message) }
+        if (prepared.failureMessage != null) {
-        val share = uniqueAction(detail, config.shareAliases, topOnly = true)
+            return failure(prepared.failureCode ?: "PDD_SHARE_UNAVAILABLE", prepared.failureMessage)
-            ?: return failure("PDD_SHARE_UNAVAILABLE", "没有找到商品分享入口")
+        }
-        when (driver.clickFresh(share)) {
+        val clicked = clickShareWithRetry(evidence, config.shareAliases, startedAt)
-            FreshActionResult.SUCCESS -> Unit
+        if (!clicked.successful) {
-            FreshActionResult.AMBIGUOUS -> return failure("PDD_SHARE_UNAVAILABLE", "商品分享入口不唯一")
+            return failure("PDD_SHARE_UNAVAILABLE", clicked.message)
-            else -> return failure("PDD_SHARE_UNAVAILABLE", "无法打开商品分享")
         }
         try {
             val panel = waitForAction(config.copyLinkAliases, config.sharePanelTimeoutMs)
-                ?: return failure("PDD_COPY_LINK_UNAVAILABLE", "没有找到复制链接")
+            if (panel == null) {
+                diagnose(
+                    AgentDiagnosticStage.SHARE_PANEL,
+                    AgentDiagnosticReason.PANEL_TIMEOUT,
+                    elapsedMs = now() - startedAt,
+                )
+                return failure("PDD_COPY_LINK_UNAVAILABLE", "没有找到复制链接")
+            }
+            diagnose(
+                AgentDiagnosticStage.SHARE_PANEL,
+                AgentDiagnosticReason.PANEL_FOUND,
+                elapsedMs = now() - startedAt,
+            )
             val copy = uniqueAction(panel, config.copyLinkAliases, topOnly = false)
                 ?: return failure("PDD_COPY_LINK_UNAVAILABLE", "复制链接入口不唯一")
             val copiedAt = now()
@@ -77,7 +103,14 @@ class CurrentPageIdentityRunner(
                 FreshActionResult.AMBIGUOUS -> return failure("PDD_COPY_LINK_UNAVAILABLE", "复制链接入口不唯一")
                 else -> return failure("PDD_COPY_LINK_UNAVAILABLE", "复制商品链接失败")
             }
-            val raw = readFreshClipboard(copiedAt, config.clipboardTimeoutMs)
+            val clipboard = readFreshClipboard(copiedAt, config.clipboardTimeoutMs)
+            diagnose(
+                stage = AgentDiagnosticStage.CLIPBOARD,
+                reason = if (clipboard.text != null) AgentDiagnosticReason.CLIPBOARD_SUCCESS else AgentDiagnosticReason.CLIPBOARD_TIMEOUT,
+                elapsedMs = now() - startedAt,
+                clipboard = clipboard,
+            )
+            val raw = clipboard.text
                 ?: return failure("PDD_CLIPBOARD_UNAVAILABLE", "无法读取刚复制的商品链接")
             val shareUrl = PddShareLinkExtractor.extract(raw)
                 ?: return failure("PDD_SHARE_LINK_INVALID", "无法识别商品链接")
@@ -87,15 +120,165 @@ class CurrentPageIdentityRunner(
         }
     }
 
-    private fun waitForPageEvidence(evidence: PageEvidence, timeoutMillis: Long): UiSnapshot? {
+    private fun waitForStableShare(
+        evidence: PageEvidence,
+        aliases: List<String>,
+        timeoutMillis: Long,
+        startedAt: Long,
+    ): SharePreparation {
         val deadline = now() + timeoutMillis
+        var previous: SnapshotNode? = null
+        var stableSince = 0L
+        var attempts = 0
+        var lastCandidateCount = 0
+        var lastSnapshot: UiSnapshot? = null
         do {
             val snapshot = driver.capture()
-            detailProblem(snapshot)?.let { return snapshot }
+            lastSnapshot = snapshot
-            if (matchesEvidence(snapshot, evidence)) return snapshot
+            attempts++
+            detailProblem(snapshot)?.let { return SharePreparation(problem = it) }
+            if (!matchesEvidence(snapshot, evidence)) {
+                previous = null
+                stableSince = 0L
+                pause(POLL_MILLIS)
+                continue
+            }
+            val candidates = actionCandidates(snapshot, aliases, topOnly = true)
+            lastCandidateCount = candidates.size
+            if (candidates.size > 1) {
+                diagnoseTarget(
+                    AgentDiagnosticStage.PAGE_STABILITY,
+                    AgentDiagnosticReason.TARGET_AMBIGUOUS,
+                    snapshot,
+                    evidence,
+                    candidates.size,
+                    null,
+                    attempts,
+                    now() - startedAt,
+                )
+                return SharePreparation(failureMessage = "商品分享入口不唯一")
+            }
+            val target = candidates.singleOrNull()
+            val currentNow = now()
+            if (target != null && previous != null && targetsStable(previous, target)) {
+                if (stableSince == 0L) stableSince = currentNow
+                if (currentNow - stableSince >= SHARE_STABLE_MILLIS) {
+                    diagnoseTarget(
+                        AgentDiagnosticStage.PAGE_STABILITY,
+                        AgentDiagnosticReason.STABLE,
+                        snapshot,
+                        evidence,
+                        1,
+                        target,
+                        attempts,
+                        currentNow - startedAt,
+                    )
+                    return SharePreparation(target = target)
+                }
+            } else {
+                stableSince = if (target != null) currentNow else 0L
+            }
+            previous = target
             pause(POLL_MILLIS)
         } while (now() <= deadline)
-        return null
+        val reason = if (lastCandidateCount == 0) AgentDiagnosticReason.TARGET_NOT_FOUND else AgentDiagnosticReason.PAGE_CHANGED
+        diagnoseTarget(
+            AgentDiagnosticStage.PAGE_STABILITY,
+            reason,
+            lastSnapshot,
+            evidence,
+            lastCandidateCount,
+            previous,
+            attempts,
+            now() - startedAt,
+        )
+        return if (lastSnapshot == null || !matchesEvidence(lastSnapshot, evidence)) {
+            SharePreparation(failureCode = "CURRENT_PDD_PAGE_NOT_FOUND", failureMessage = "没有找到商品详情页")
+        } else {
+            SharePreparation(failureMessage = "商品分享入口尚未稳定，请重试")
+        }
+    }
+
+    private fun clickShareWithRetry(
+        evidence: PageEvidence,
+        aliases: List<String>,
+        startedAt: Long,
+    ): ShareClickResult {
+        val deadline = now() + SHARE_CLICK_RETRY_MILLIS
+        var attempt = 0
+        var lastReason = AgentDiagnosticReason.TARGET_NOT_FOUND
+        do {
+            attempt++
+            val snapshot = driver.capture()
+            detailProblem(snapshot)?.let { return ShareClickResult(false, it.message) }
+            if (!matchesEvidence(snapshot, evidence)) {
+                diagnoseTarget(
+                    AgentDiagnosticStage.SHARE_CLICK,
+                    AgentDiagnosticReason.PAGE_CHANGED,
+                    snapshot,
+                    evidence,
+                    0,
+                    null,
+                    attempt,
+                    now() - startedAt,
+                )
+                return ShareClickResult(false, "商品详情页发生变化，请重新打开商品")
+            }
+            val candidates = actionCandidates(snapshot, aliases, topOnly = true)
+            if (candidates.size > 1) {
+                diagnoseTarget(
+                    AgentDiagnosticStage.SHARE_CLICK,
+                    AgentDiagnosticReason.TARGET_AMBIGUOUS,
+                    snapshot,
+                    evidence,
+                    candidates.size,
+                    null,
+                    attempt,
+                    now() - startedAt,
+                )
+                return ShareClickResult(false, "商品分享入口不唯一")
+            }
+            val target = candidates.singleOrNull()
+            if (target == null) {
+                lastReason = AgentDiagnosticReason.TARGET_NOT_FOUND
+                diagnoseTarget(
+                    AgentDiagnosticStage.SHARE_CLICK,
+                    lastReason,
+                    snapshot,
+                    evidence,
+                    0,
+                    null,
+                    attempt,
+                    now() - startedAt,
+                )
+            } else {
+                val outcome = driver.clickFreshDetailed(target)
+                lastReason = outcome.reason.toDiagnosticReason()
+                diagnoseTarget(
+                    AgentDiagnosticStage.SHARE_CLICK,
+                    lastReason,
+                    snapshot,
+                    evidence,
+                    outcome.candidateCount,
+                    target,
+                    attempt,
+                    now() - startedAt,
+                    outcome.clickableAncestorDepth,
+                )
+                when (outcome.result) {
+                    FreshActionResult.SUCCESS -> return ShareClickResult(true, "")
+                    FreshActionResult.AMBIGUOUS -> return ShareClickResult(false, "商品分享入口不唯一")
+                    FreshActionResult.NOT_FOUND, FreshActionResult.FAILED -> Unit
+                }
+            }
+            pause(POLL_MILLIS)
+        } while (now() <= deadline)
+        val message = when (lastReason) {
+            AgentDiagnosticReason.TARGET_NOT_FOUND, AgentDiagnosticReason.ROOT_UNAVAILABLE -> "商品分享入口发生变化，请重试"
+            AgentDiagnosticReason.NO_CLICKABLE_ANCESTOR -> "商品分享入口暂时无法点击，请重试"
+            else -> "商品分享入口点击失败，请重试"
+        }
+        return ShareClickResult(false, message)
     }
 
     private fun waitForAction(aliases: List<String>, timeoutMillis: Long): UiSnapshot? {
@@ -119,6 +302,10 @@ class CurrentPageIdentityRunner(
         }
 
     private fun uniqueAction(snapshot: UiSnapshot, aliases: List<String>, topOnly: Boolean): SnapshotNode? {
+        return actionCandidates(snapshot, aliases, topOnly).singleOrNull()
+    }
+
+    private fun actionCandidates(snapshot: UiSnapshot, aliases: List<String>, topOnly: Boolean): List<SnapshotNode> {
         val screenHeight = snapshot.nodes.maxOfOrNull { it.bounds.bottom } ?: 0
         val candidates = snapshot.nodes.filter { node ->
             node.visible && node.enabled && node.label in aliases && (!topOnly || screenHeight <= 0 || node.bounds.centerY <= screenHeight * 45 / 100)
@@ -132,7 +319,93 @@ class CurrentPageIdentityRunner(
                 }
             ) distinct += candidate
         }
-        return distinct.singleOrNull()
+        return distinct
+    }
+
+    private fun targetsStable(previous: SnapshotNode, current: SnapshotNode): Boolean {
+        if (previous.label != current.label || previous.className != current.className) return false
+        val intersectionWidth = (minOf(previous.bounds.right, current.bounds.right) - maxOf(previous.bounds.left, current.bounds.left)).coerceAtLeast(0)
+        val intersectionHeight = (minOf(previous.bounds.bottom, current.bounds.bottom) - maxOf(previous.bounds.top, current.bounds.top)).coerceAtLeast(0)
+        val intersection = intersectionWidth.toLong() * intersectionHeight
+        val union = previous.bounds.width.toLong() * previous.bounds.height +
+            current.bounds.width.toLong() * current.bounds.height - intersection
+        return union > 0 && intersection * 100 / union >= 80
+    }
+
+    private fun diagnoseTarget(
+        stage: AgentDiagnosticStage,
+        reason: AgentDiagnosticReason,
+        snapshot: UiSnapshot?,
+        evidence: PageEvidence,
+        candidateCount: Int,
+        target: SnapshotNode?,
+        attempt: Int,
+        elapsedMs: Long,
+        clickableAncestorDepth: Int? = null,
+    ) {
+        diagnose(
+            stage = stage,
+            reason = reason,
+            attempt = attempt,
+            elapsedMs = elapsedMs,
+            packageMatched = snapshot?.packageName == evidence.packageName,
+            activityMatched = snapshot?.activityName == evidence.activityName,
+            candidateCount = candidateCount,
+            target = target,
+            snapshot = snapshot,
+            clickableAncestorDepth = clickableAncestorDepth,
+        )
+    }
+
+    private fun diagnose(
+        stage: AgentDiagnosticStage,
+        reason: AgentDiagnosticReason,
+        attempt: Int = 0,
+        elapsedMs: Long = 0,
+        packageMatched: Boolean? = null,
+        activityMatched: Boolean? = null,
+        candidateCount: Int? = null,
+        target: SnapshotNode? = null,
+        snapshot: UiSnapshot? = null,
+        clickableAncestorDepth: Int? = null,
+        clipboard: ClipboardReadOutcome? = null,
+    ) {
+        if (taskId <= 0) return
+        runCatching {
+            diagnostic(
+                AgentDiagnosticEvent(
+                    taskId = taskId,
+                    stage = stage,
+                    reason = reason,
+                    attempt = attempt,
+                    elapsedMs = elapsedMs.coerceAtLeast(0),
+                    packageMatched = packageMatched,
+                    activityMatched = activityMatched,
+                    candidateCount = candidateCount,
+                    targetClassName = target?.className,
+                    targetClickable = target?.clickable,
+                    clickableAncestorDepth = clickableAncestorDepth,
+                    targetZone = target?.let { targetZone(it, snapshot) },
+                    clipboardPollCount = clipboard?.pollCount,
+                    clipboardMimeAccepted = clipboard?.mimeAccepted,
+                    clipboardItemCount = clipboard?.itemCount,
+                    clipboardContentLength = clipboard?.contentLength,
+                    clipboardTimestampFresh = clipboard?.timestampFresh,
+                ),
+            )
+        }
+    }
+
+    private fun targetZone(target: SnapshotNode, snapshot: UiSnapshot?): String {
+        val width = snapshot?.nodes?.maxOfOrNull { it.bounds.right }?.coerceAtLeast(1) ?: 1
+        val height = snapshot?.nodes?.maxOfOrNull { it.bounds.bottom }?.coerceAtLeast(1) ?: 1
+        return when {
+            target.bounds.centerY > height * 2 / 3 -> "bottom"
+            target.bounds.centerY > height / 3 -> "middle"
+            target.bounds.centerX < width / 3 -> "top-left"
+            target.bounds.centerX > width * 2 / 3 -> "top-right"
+            else -> "top-center"
+        }
     }
 
     private fun detailProblem(snapshot: UiSnapshot): PageProblem? =
@@ -147,8 +420,29 @@ class CurrentPageIdentityRunner(
 
     private fun failure(code: String, message: String) = CurrentPageIdentityResult(false, code, message)
 
+    private fun FreshClickReason.toDiagnosticReason(): AgentDiagnosticReason = when (this) {
+        FreshClickReason.SUCCESS -> AgentDiagnosticReason.CLICK_SUCCESS
+        FreshClickReason.ROOT_UNAVAILABLE -> AgentDiagnosticReason.ROOT_UNAVAILABLE
+        FreshClickReason.TARGET_NOT_FOUND -> AgentDiagnosticReason.TARGET_NOT_FOUND
+        FreshClickReason.TARGET_AMBIGUOUS -> AgentDiagnosticReason.TARGET_AMBIGUOUS
+        FreshClickReason.NO_CLICKABLE_ANCESTOR -> AgentDiagnosticReason.NO_CLICKABLE_ANCESTOR
+        FreshClickReason.ACTION_CLICK_FALSE -> AgentDiagnosticReason.ACTION_CLICK_FALSE
+        FreshClickReason.UNKNOWN -> AgentDiagnosticReason.UNKNOWN
+    }
+
+    private data class SharePreparation(
+        val target: SnapshotNode? = null,
+        val problem: PageProblem? = null,
+        val failureCode: String? = null,
+        val failureMessage: String? = null,
+    )
+
+    private data class ShareClickResult(val successful: Boolean, val message: String)
+
     private companion object {
         const val POLL_MILLIS = 100L
+        const val SHARE_STABLE_MILLIS = 300L
+        const val SHARE_CLICK_RETRY_MILLIS = 1_000L
         const val PDD_PACKAGE = "com.xunmeng.pinduoduo"
     }
 }

android/app/src/main/java/cn/ilapage/goauto/agent/automation/GoAutoAccessibilityService.kt

@@ -206,8 +206,10 @@ class GoAutoAccessibilityService : AccessibilityService(), UiDriver, PddCollecto
         return UiSnapshot(root.packageName?.toString(), currentActivity(), nodes)
     }
 
-    override fun clickFresh(target: SnapshotNode): FreshActionResult {
+    override fun clickFresh(target: SnapshotNode): FreshActionResult = clickFreshDetailed(target).result
-        val root = rootInActiveWindow ?: return FreshActionResult.NOT_FOUND
+
+    override fun clickFreshDetailed(target: SnapshotNode): FreshClickOutcome {
+        val root = rootInActiveWindow ?: return FreshClickOutcome(FreshActionResult.NOT_FOUND, FreshClickReason.ROOT_UNAVAILABLE)
         val candidates = mutableListOf<AccessibilityNodeInfo>()
         walk(root) { node ->
             val label = node.preferredOrDescendantLabel()
@@ -218,11 +220,23 @@ class GoAutoAccessibilityService : AccessibilityService(), UiDriver, PddCollecto
                 kotlin.math.abs(bounds.centerY() - target.bounds.centerY) <= 32
             ) candidates += node
         }
-        if (candidates.isEmpty()) return FreshActionResult.NOT_FOUND
+        if (candidates.isEmpty()) return FreshClickOutcome(FreshActionResult.NOT_FOUND, FreshClickReason.TARGET_NOT_FOUND)
-        if (candidates.size != 1) return FreshActionResult.AMBIGUOUS
+        if (candidates.size != 1) return FreshClickOutcome(FreshActionResult.AMBIGUOUS, FreshClickReason.TARGET_AMBIGUOUS, candidates.size)
         var node = candidates.single()
-        while (!node.isClickable) node = node.parent ?: return FreshActionResult.FAILED
+        var ancestorDepth = 0
-        return if (node.performAction(AccessibilityNodeInfo.ACTION_CLICK)) FreshActionResult.SUCCESS else FreshActionResult.FAILED
+        while (!node.isClickable) {
+            node = node.parent ?: return FreshClickOutcome(
+                FreshActionResult.FAILED,
+                FreshClickReason.NO_CLICKABLE_ANCESTOR,
+                candidates.size,
+            )
+            ancestorDepth++
+        }
+        return if (node.performAction(AccessibilityNodeInfo.ACTION_CLICK)) {
+            FreshClickOutcome(FreshActionResult.SUCCESS, FreshClickReason.SUCCESS, candidates.size, ancestorDepth)
+        } else {
+            FreshClickOutcome(FreshActionResult.FAILED, FreshClickReason.ACTION_CLICK_FALSE, candidates.size, ancestorDepth)
+        }
     }
 
     override fun tapPurchaseFresh(target: SnapshotNode): FreshActionResult {

android/app/src/main/java/cn/ilapage/goauto/agent/automation/PddProductDetailCollector.kt

@@ -37,9 +37,30 @@ data class UiSnapshot(
 
 enum class FreshActionResult { SUCCESS, NOT_FOUND, AMBIGUOUS, FAILED }
 
+enum class FreshClickReason {
+    SUCCESS,
+    ROOT_UNAVAILABLE,
+    TARGET_NOT_FOUND,
+    TARGET_AMBIGUOUS,
+    NO_CLICKABLE_ANCESTOR,
+    ACTION_CLICK_FALSE,
+    UNKNOWN,
+}
+
+data class FreshClickOutcome(
+    val result: FreshActionResult,
+    val reason: FreshClickReason,
+    val candidateCount: Int = 0,
+    val clickableAncestorDepth: Int? = null,
+)
+
 interface PddCollectorDriver {
     fun capture(): UiSnapshot
     fun clickFresh(target: SnapshotNode): FreshActionResult
+    fun clickFreshDetailed(target: SnapshotNode): FreshClickOutcome = FreshClickOutcome(
+        result = clickFresh(target),
+        reason = FreshClickReason.UNKNOWN,
+    )
     fun swipeSpec(direction: SwipeDirection, anchor: SnapshotNode? = null): Boolean
     fun pullDownGoodsPage(): Boolean
     fun back(): Boolean

android/app/src/main/java/cn/ilapage/goauto/agent/persistence/AgentDiagnosticStore.kt

@@ -0,0 +1,153 @@
+package cn.ilapage.goauto.agent.persistence
+
+import android.content.ContentValues
+import android.content.Context
+import android.database.sqlite.SQLiteDatabase
+import android.database.sqlite.SQLiteOpenHelper
+import cn.ilapage.goauto.agent.BuildConfig
+
+enum class AgentDiagnosticStage {
+    PAGE_STABILITY,
+    SHARE_CLICK,
+    SHARE_PANEL,
+    CLIPBOARD,
+}
+
+enum class AgentDiagnosticReason {
+    STABLE,
+    PAGE_CHANGED,
+    TARGET_NOT_FOUND,
+    TARGET_AMBIGUOUS,
+    ROOT_UNAVAILABLE,
+    NO_CLICKABLE_ANCESTOR,
+    ACTION_CLICK_FALSE,
+    CLICK_SUCCESS,
+    PANEL_FOUND,
+    PANEL_TIMEOUT,
+    CLIPBOARD_SUCCESS,
+    CLIPBOARD_TIMEOUT,
+    UNKNOWN,
+}
+
+data class AgentDiagnosticEvent(
+    val taskId: Long,
+    val stage: AgentDiagnosticStage,
+    val reason: AgentDiagnosticReason,
+    val attempt: Int = 0,
+    val elapsedMs: Long = 0,
+    val packageMatched: Boolean? = null,
+    val activityMatched: Boolean? = null,
+    val candidateCount: Int? = null,
+    val targetClassName: String? = null,
+    val targetClickable: Boolean? = null,
+    val clickableAncestorDepth: Int? = null,
+    val targetZone: String? = null,
+    val clipboardPollCount: Int? = null,
+    val clipboardMimeAccepted: Boolean? = null,
+    val clipboardItemCount: Int? = null,
+    val clipboardContentLength: Int? = null,
+    val clipboardTimestampFresh: Boolean? = null,
+    val createdAt: Long = System.currentTimeMillis(),
+)
+
+class SafeAgentDiagnosticRecorder(
+    private val persist: (AgentDiagnosticEvent) -> Unit,
+    private val onFailure: (Throwable) -> Unit = {},
+) {
+    fun record(event: AgentDiagnosticEvent) {
+        runCatching { persist(event) }.onFailure { runCatching { onFailure(it) } }
+    }
+}
+
+internal object AgentDiagnosticRetentionPolicy {
+    const val MAX_RECORDS = 50
+    const val RETENTION_MILLIS = 7L * 24 * 60 * 60 * 1_000
+
+    fun cutoff(createdAt: Long): Long = createdAt - RETENTION_MILLIS
+}
+
+class AgentDiagnosticStore(context: Context) : SQLiteOpenHelper(context, DATABASE_NAME, null, DATABASE_VERSION) {
+    override fun onCreate(db: SQLiteDatabase) {
+        db.execSQL(
+            """CREATE TABLE agent_diagnostic (
+                id INTEGER PRIMARY KEY AUTOINCREMENT,
+                task_id INTEGER NOT NULL,
+                stage TEXT NOT NULL,
+                reason TEXT NOT NULL,
+                attempt INTEGER NOT NULL,
+                elapsed_ms INTEGER NOT NULL,
+                package_matched INTEGER,
+                activity_matched INTEGER,
+                candidate_count INTEGER,
+                target_class_name TEXT,
+                target_clickable INTEGER,
+                clickable_ancestor_depth INTEGER,
+                target_zone TEXT,
+                clipboard_poll_count INTEGER,
+                clipboard_mime_accepted INTEGER,
+                clipboard_item_count INTEGER,
+                clipboard_content_length INTEGER,
+                clipboard_timestamp_fresh INTEGER,
+                agent_version TEXT NOT NULL,
+                created_at INTEGER NOT NULL
+            )""".trimIndent(),
+        )
+        db.execSQL("CREATE INDEX idx_agent_diagnostic_task ON agent_diagnostic(task_id, id)")
+    }
+
+    override fun onUpgrade(db: SQLiteDatabase, oldVersion: Int, newVersion: Int) = Unit
+
+    @Synchronized
+    fun record(event: AgentDiagnosticEvent) {
+        require(event.taskId > 0)
+        val db = writableDatabase
+        db.beginTransaction()
+        try {
+            val values = ContentValues().apply {
+                put("task_id", event.taskId)
+                put("stage", event.stage.name)
+                put("reason", event.reason.name)
+                put("attempt", event.attempt.coerceAtLeast(0))
+                put("elapsed_ms", event.elapsedMs.coerceAtLeast(0))
+                putNullableBoolean("package_matched", event.packageMatched)
+                putNullableBoolean("activity_matched", event.activityMatched)
+                putNullableInt("candidate_count", event.candidateCount)
+                event.targetClassName?.let { put("target_class_name", it.take(MAX_CLASS_NAME_CHARS)) }
+                putNullableBoolean("target_clickable", event.targetClickable)
+                putNullableInt("clickable_ancestor_depth", event.clickableAncestorDepth)
+                event.targetZone?.takeIf(ALLOWED_ZONES::contains)?.let { put("target_zone", it) }
+                putNullableInt("clipboard_poll_count", event.clipboardPollCount)
+                putNullableBoolean("clipboard_mime_accepted", event.clipboardMimeAccepted)
+                putNullableInt("clipboard_item_count", event.clipboardItemCount)
+                putNullableInt("clipboard_content_length", event.clipboardContentLength)
+                putNullableBoolean("clipboard_timestamp_fresh", event.clipboardTimestampFresh)
+                put("agent_version", BuildConfig.VERSION_NAME)
+                put("created_at", event.createdAt)
+            }
+            check(db.insert("agent_diagnostic", null, values) != -1L)
+            db.delete("agent_diagnostic", "created_at < ?", arrayOf(AgentDiagnosticRetentionPolicy.cutoff(event.createdAt).toString()))
+            db.execSQL(
+                "DELETE FROM agent_diagnostic WHERE id NOT IN " +
+                    "(SELECT id FROM agent_diagnostic ORDER BY id DESC LIMIT ${AgentDiagnosticRetentionPolicy.MAX_RECORDS})",
+            )
+            db.setTransactionSuccessful()
+        } finally {
+            db.endTransaction()
+        }
+    }
+
+    private fun ContentValues.putNullableBoolean(key: String, value: Boolean?) {
+        value?.let { put(key, if (it) 1 else 0) }
+    }
+
+    private fun ContentValues.putNullableInt(key: String, value: Int?) {
+        value?.let { put(key, it.coerceAtLeast(0)) }
+    }
+
+    companion object {
+        private const val DATABASE_NAME = "goauto_diagnostics.db"
+        private const val DATABASE_VERSION = 1
+        private const val MAX_CLASS_NAME_CHARS = 160
+        private val ALLOWED_ZONES = setOf("top-left", "top-center", "top-right", "middle", "bottom")
+    }
+}

android/app/src/main/java/cn/ilapage/goauto/agent/service/AgentForegroundService.kt

@@ -49,6 +49,8 @@ import cn.ilapage.goauto.agent.network.PurchaseAgentTask
 import cn.ilapage.goauto.agent.network.ServerUrlPolicy
 import cn.ilapage.goauto.agent.persistence.PurchaseTaskStore
 import cn.ilapage.goauto.agent.persistence.PurchaseOutboxUploader
+import cn.ilapage.goauto.agent.persistence.AgentDiagnosticStore
+import cn.ilapage.goauto.agent.persistence.SafeAgentDiagnosticRecorder
 import org.json.JSONArray
 import org.json.JSONObject
 import java.util.concurrent.Executors
@@ -63,6 +65,7 @@ import java.util.UUID
 class AgentForegroundService : Service() {
     private val executor: ScheduledExecutorService = Executors.newSingleThreadScheduledExecutor()
     private val taskExecutor: ExecutorService = Executors.newSingleThreadExecutor()
+    private val diagnosticExecutor: ExecutorService = Executors.newSingleThreadExecutor()
     private val taskMutex = TaskExecutionMutex()
     private val runningTaskId = AtomicReference<Long?>(null)
     private val working = AtomicBoolean(false)
@@ -79,6 +82,8 @@ class AgentForegroundService : Service() {
     private lateinit var settingsStore: AgentSettingsStore
     private lateinit var stateStore: AgentStateStore
     private lateinit var purchaseStore: PurchaseTaskStore
+    private lateinit var diagnosticStore: AgentDiagnosticStore
+    private lateinit var diagnosticRecorder: SafeAgentDiagnosticRecorder
     private lateinit var connectivityManager: ConnectivityManager
 
     private val networkCallback = object : ConnectivityManager.NetworkCallback() {
@@ -95,6 +100,16 @@ class AgentForegroundService : Service() {
         // Wake locks and cooldown tickets are process-local. Never restore a stale UI flag.
         stateStore.setKeepScreenOn(false)
         purchaseStore = PurchaseTaskStore(this)
+        diagnosticStore = AgentDiagnosticStore(this)
+        diagnosticRecorder = SafeAgentDiagnosticRecorder(
+            persist = { event ->
+                diagnosticExecutor.execute {
+                    runCatching { diagnosticStore.record(event) }
+                        .onFailure { error -> Log.w("GoAutoDiagnostic", "agent diagnostic write failed: ${error.javaClass.simpleName}") }
+                }
+            },
+            onFailure = { error -> Log.w("GoAutoDiagnostic", "agent diagnostic write failed: ${error.javaClass.simpleName}") },
+        )
         val restoredPurchaseTaskId = purchaseStore.activeTaskId()
         runningTaskId.set(restoredPurchaseTaskId)
         stateStore.clearActiveTask()
@@ -126,7 +141,11 @@ class AgentForegroundService : Service() {
         releaseTaskWakeLock()
         executor.shutdownNow()
         taskExecutor.shutdownNow()
+        diagnosticExecutor.shutdown()
+        runCatching { diagnosticExecutor.awaitTermination(1, TimeUnit.SECONDS) }
+        diagnosticExecutor.shutdownNow()
         purchaseStore.close()
+        diagnosticStore.close()
         super.onDestroy()
     }
 
@@ -592,6 +611,8 @@ class AgentForegroundService : Service() {
                     readFreshClipboard = { copiedAt, timeout ->
                         ClipboardRelayActivity.readFresh(this, copiedAt, timeout)
                     },
+                    taskId = task.taskId,
+                    diagnostic = diagnosticRecorder::record,
                 ).identify(rule)
                 if (!identityResult.successful) {
                     throw TaskFailure(identityResult.code, identityResult.message)

android/app/src/test/java/cn/ilapage/goauto/agent/AgentDiagnosticRecorderTest.kt

@@ -0,0 +1,36 @@
+package cn.ilapage.goauto.agent
+
+import cn.ilapage.goauto.agent.persistence.AgentDiagnosticEvent
+import cn.ilapage.goauto.agent.persistence.AgentDiagnosticReason
+import cn.ilapage.goauto.agent.persistence.AgentDiagnosticRetentionPolicy
+import cn.ilapage.goauto.agent.persistence.AgentDiagnosticStage
+import cn.ilapage.goauto.agent.persistence.SafeAgentDiagnosticRecorder
+import org.junit.Assert.assertEquals
+import org.junit.Test
+
+class AgentDiagnosticRecorderTest {
+    @Test
+    fun diagnosticsAreBoundedToFiftyRecordsAndSevenDays() {
+        assertEquals(50, AgentDiagnosticRetentionPolicy.MAX_RECORDS)
+        assertEquals(1_000L, AgentDiagnosticRetentionPolicy.cutoff(AgentDiagnosticRetentionPolicy.RETENTION_MILLIS + 1_000L))
+    }
+
+    @Test
+    fun diagnosticWriteFailureNeverEscapesIntoCollectionFlow() {
+        var failureCount = 0
+        val recorder = SafeAgentDiagnosticRecorder(
+            persist = { error("database unavailable") },
+            onFailure = { failureCount++ },
+        )
+
+        recorder.record(
+            AgentDiagnosticEvent(
+                taskId = 70,
+                stage = AgentDiagnosticStage.SHARE_CLICK,
+                reason = AgentDiagnosticReason.ACTION_CLICK_FALSE,
+            ),
+        )
+
+        assertEquals(1, failureCount)
+    }
+}

android/app/src/test/java/cn/ilapage/goauto/agent/CurrentPageCollectionTest.kt

@@ -1,11 +1,14 @@
 package cn.ilapage.goauto.agent
 
 import cn.ilapage.goauto.agent.automation.CollectionRule
+import cn.ilapage.goauto.agent.automation.ClipboardReadOutcome
 import cn.ilapage.goauto.agent.automation.CurrentPageIdentityConfig
 import cn.ilapage.goauto.agent.automation.CurrentPageIdentityRunner
 import cn.ilapage.goauto.agent.automation.CurrentPageNavigationPolicy
 import cn.ilapage.goauto.agent.automation.CurrentPageRestoreDecision
 import cn.ilapage.goauto.agent.automation.FreshActionResult
+import cn.ilapage.goauto.agent.automation.FreshClickOutcome
+import cn.ilapage.goauto.agent.automation.FreshClickReason
 import cn.ilapage.goauto.agent.automation.NodeBounds
 import cn.ilapage.goauto.agent.automation.NodeSelector
 import cn.ilapage.goauto.agent.automation.PageEvidence
@@ -14,6 +17,8 @@ import cn.ilapage.goauto.agent.automation.PddShareLinkExtractor
 import cn.ilapage.goauto.agent.automation.SnapshotNode
 import cn.ilapage.goauto.agent.automation.SwipeDirection
 import cn.ilapage.goauto.agent.automation.UiSnapshot
+import cn.ilapage.goauto.agent.persistence.AgentDiagnosticEvent
+import cn.ilapage.goauto.agent.persistence.AgentDiagnosticReason
 import org.junit.Assert.assertEquals
 import org.junit.Assert.assertFalse
 import org.junit.Assert.assertNull
@@ -78,12 +83,13 @@ class CurrentPageCollectionTest {
 
     @Test
     fun identifiesCurrentDetailThroughUniqueShareAndFreshClipboard() {
-        val driver = FakeDriver(listOf(detailSnapshot(), sharePanelSnapshot(), sharePanelSnapshot()))
+        var currentTime = 0L
+        val driver = FakeDriver(List(6) { detailSnapshot() } + sharePanelSnapshot())
         val result = CurrentPageIdentityRunner(
             driver = driver,
-            readFreshClipboard = { _, _ -> "复制成功 https://p.pinduoduo.com/abc123" },
+            readFreshClipboard = { _, _ -> ClipboardReadOutcome("复制成功 https://p.pinduoduo.com/abc123") },
-            now = { 1_000L },
+            now = { currentTime },
-            pause = {},
+            pause = { currentTime += it },
         ).identify(rule())
 
         assertTrue(result.successful)
@@ -107,7 +113,39 @@ class CurrentPageCollectionTest {
         assertEquals("PDD_SHARE_UNAVAILABLE", result.code)
     }
 
-    private class FakeDriver(private val snapshots: List<UiSnapshot>) : PddCollectorDriver {
+    @Test
+    fun retriesFreshShareLookupWithinBudgetAndRecordsStructuredReasons() {
+        var currentTime = 0L
+        val events = mutableListOf<AgentDiagnosticEvent>()
+        val driver = FakeDriver(
+            snapshots = List(7) { detailSnapshot() } + sharePanelSnapshot(),
+            freshOutcomes = ArrayDeque(
+                listOf(
+                    FreshClickOutcome(FreshActionResult.NOT_FOUND, FreshClickReason.TARGET_NOT_FOUND),
+                    FreshClickOutcome(FreshActionResult.SUCCESS, FreshClickReason.SUCCESS, candidateCount = 1, clickableAncestorDepth = 1),
+                ),
+            ),
+        )
+
+        val result = CurrentPageIdentityRunner(
+            driver = driver,
+            readFreshClipboard = { _, _ -> ClipboardReadOutcome("https://p.pinduoduo.com/retry", pollCount = 2, mimeAccepted = true, itemCount = 1, contentLength = 36, timestampFresh = true) },
+            taskId = 70,
+            diagnostic = events::add,
+            now = { currentTime },
+            pause = { currentTime += it },
+        ).identify(rule())
+
+        assertTrue(result.successful)
+        assertTrue(events.any { it.reason == AgentDiagnosticReason.TARGET_NOT_FOUND })
+        assertTrue(events.any { it.reason == AgentDiagnosticReason.CLICK_SUCCESS && it.clickableAncestorDepth == 1 })
+        assertTrue(events.any { it.reason == AgentDiagnosticReason.CLIPBOARD_SUCCESS && it.clipboardPollCount == 2 })
+    }
+
+    private class FakeDriver(
+        private val snapshots: List<UiSnapshot>,
+        private val freshOutcomes: ArrayDeque<FreshClickOutcome> = ArrayDeque(),
+    ) : PddCollectorDriver {
         private var index = 0
         val clicked = mutableListOf<String>()
         var backCalled = false
@@ -117,6 +155,14 @@ class CurrentPageCollectionTest {
             clicked += target.label
             return FreshActionResult.SUCCESS
         }
+        override fun clickFreshDetailed(target: SnapshotNode): FreshClickOutcome {
+            clicked += target.label
+            return if (freshOutcomes.isEmpty()) {
+                FreshClickOutcome(FreshActionResult.SUCCESS, FreshClickReason.SUCCESS, candidateCount = 1, clickableAncestorDepth = 0)
+            } else {
+                freshOutcomes.removeFirst()
+            }
+        }
         override fun swipeSpec(direction: SwipeDirection, anchor: SnapshotNode?) = false
         override fun pullDownGoodsPage() = false
         override fun back(): Boolean { backCalled = true; return true }