fix: DM sidebar shows conversation partners, not owned agents

- New API: GET /api/dm/partners — returns DM conversation partners
  ordered by most recent message, with unread counts
- Sidebar DM section now shows actual conversation partners (agents
  you've exchanged messages with) instead of owned agents
- Each partner shows name, unread badge, clickable to /dm/{name}
- Fixes issue where all DMs were shown mixed in one view

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

internal/api/messages_handler.go

@@ -4,6 +4,7 @@ import (
 	"encoding/json"
 	"log/slog"
 	"net/http"
+	"sort"
 	"strconv"
 	"strings"
 	"time"
@@ -581,6 +582,109 @@ func (h *MessagesHandler) DMMessages(w http.ResponseWriter, r *http.Request) {
 	})
 }
 
+// DMPartners returns a list of agents the user has DM conversations with,
+// ordered by most recent message. Each entry includes the peer agent name,
+// last message preview, timestamp, and unread count.
+func (h *MessagesHandler) DMPartners(w http.ResponseWriter, r *http.Request) {
+	ownerID, ok := OwnerIDFromContext(r.Context())
+	if !ok {
+		writeJSON(w, http.StatusUnauthorized, errorBody("unauthorized", "Authentication required"))
+		return
+	}
+
+	ownedAgents, err := h.agentService.ListAgents(r.Context(), ownerID)
+	if err != nil {
+		writeJSON(w, http.StatusInternalServerError, errorBody("server_error", "Failed to list agents"))
+		return
+	}
+
+	if len(ownedAgents) == 0 {
+		writeJSON(w, http.StatusOK, map[string]any{"partners": []any{}})
+		return
+	}
+
+	ownedNames := make(map[string]bool, len(ownedAgents))
+	for _, a := range ownedAgents {
+		ownedNames[a.Name] = true
+	}
+
+	// Get recent DMs for all owned agents
+	type partner struct {
+		Name        string `json:"name"`
+		DisplayName string `json:"display_name"`
+		LastMessage string `json:"last_message"`
+		LastTime    string `json:"last_time"`
+		Unread      int    `json:"unread"`
+	}
+	partnerMap := make(map[string]*partner)
+
+	for _, agent := range ownedAgents {
+		opts := messaging.ReadOptions{
+			Limit:       200,
+			IncludeRead: true,
+		}
+		result, err := h.msgService.ReadInbox(r.Context(), agent.Name, opts)
+		if err != nil {
+			continue
+		}
+		for _, msg := range result.Messages {
+			if msg.ChannelID != nil {
+				continue // skip channel messages
+			}
+			// Determine the peer (the other party in the DM)
+			peer := msg.FromAgent
+			if ownedNames[peer] {
+				peer = msg.ToAgent
+			}
+			if peer == "" || ownedNames[peer] {
+				continue // skip self-to-self
+			}
+
+			existing, exists := partnerMap[peer]
+			if !exists {
+				partnerMap[peer] = &partner{
+					Name:        peer,
+					DisplayName: peer,
+					LastMessage: truncateStr(msg.Body, 80),
+					LastTime:    msg.CreatedAt.Format(time.RFC3339),
+					Unread:      0,
+				}
+				existing = partnerMap[peer]
+			}
+
+			// Track newest message
+			lt, _ := time.Parse(time.RFC3339, existing.LastTime)
+			if msg.CreatedAt.After(lt) {
+				existing.LastMessage = truncateStr(msg.Body, 80)
+				existing.LastTime = msg.CreatedAt.Format(time.RFC3339)
+			}
+
+			// Count unread (pending messages TO owned agents)
+			if ownedNames[msg.ToAgent] && (msg.Status == "pending" || msg.Status == "processing") {
+				existing.Unread++
+			}
+		}
+	}
+
+	// Resolve display names
+	for peer, p := range partnerMap {
+		if a, err := h.agentService.GetAgent(r.Context(), peer); err == nil {
+			p.DisplayName = a.DisplayName
+		}
+	}
+
+	// Sort by last_time descending
+	partners := make([]*partner, 0, len(partnerMap))
+	for _, p := range partnerMap {
+		partners = append(partners, p)
+	}
+	sort.Slice(partners, func(i, j int) bool {
+		return partners[i].LastTime > partners[j].LastTime
+	})
+
+	writeJSON(w, http.StatusOK, map[string]any{"partners": partners})
+}
+
 func (h *MessagesHandler) isAgentOwnedBy(r *http.Request, agentName string, ownerID int64) bool {
 	if agentName == "" {
 		return false

internal/api/router.go

@@ -131,6 +131,7 @@ func NewRouterWithConfig(cfg RouterConfig) chi.Router {
 			r.Delete("/api/agents/{name}", agentsHandler.DeleteAgent)
 			r.Post("/api/agents/{name}/revoke-key", agentsHandler.RevokeKey)
 			r.Get("/api/agents/{name}/messages", messagesHandler.DMMessages)
+			r.Get("/api/dm/partners", messagesHandler.DMPartners)
 
 			// Notifications
 			r.Get("/api/notifications/unread", notificationsHandler.UnreadCounts)

internal/web/dist/index.html

@@ -11,30 +11,30 @@
 		<link rel="preconnect" href="https://fonts.googleapis.com">
 		<link rel="preconnect" href="https://fonts.gstatic.com" crossorigin>
 		<link href="https://fonts.googleapis.com/css2?family=DM+Sans:wght@400;500;600;700&family=Instrument+Sans:wght@400;500;600;700&family=JetBrains+Mono:wght@400;500&display=swap" rel="stylesheet">
-		<link href="/_app/immutable/entry/start.C53XvHet.js" rel="modulepreload">
-		<link href="/_app/immutable/chunks/BYAQw6Ic.js" rel="modulepreload">
+		<link href="/_app/immutable/entry/start.DkfAG9pH.js" rel="modulepreload">
+		<link href="/_app/immutable/chunks/Ll39S8uO.js" rel="modulepreload">
 		<link href="/_app/immutable/chunks/BjgrqnN-.js" rel="modulepreload">
 		<link href="/_app/immutable/chunks/BK7DUW2U.js" rel="modulepreload">
 		<link href="/_app/immutable/chunks/CslSvznw.js" rel="modulepreload">
 		<link href="/_app/immutable/chunks/C_dJMdcr.js" rel="modulepreload">
 		<link href="/_app/immutable/chunks/Du3f5uIc.js" rel="modulepreload">
 		<link href="/_app/immutable/chunks/B3RSY5nb.js" rel="modulepreload">
-		<link href="/_app/immutable/entry/app.1r_Gkim3.js" rel="modulepreload">
+		<link href="/_app/immutable/entry/app.koRx5eH6.js" rel="modulepreload">
 		
 	</head>
 	<body data-sveltekit-preload-data="hover">
 		<div style="display: contents">
 			<script>
 				{
-					__sveltekit_1vc73p1 = {
+					__sveltekit_v7zte8 = {
 						base: ""
 					};
 
 					const element = document.currentScript.parentElement;
 
 					Promise.all([
-						import("/_app/immutable/entry/start.C53XvHet.js"),
-						import("/_app/immutable/entry/app.1r_Gkim3.js")
+						import("/_app/immutable/entry/start.DkfAG9pH.js"),
+						import("/_app/immutable/entry/app.koRx5eH6.js")
 					]).then(([kit, app]) => {
 						kit.start(app, element);
 					});

web/src/lib/api/client.ts

@@ -83,6 +83,11 @@ export const conversations = {
 	get: (id: number) => request<{ conversation: any; messages: any[] }>('GET', `/api/conversations/${id}`)
 };
 
+// DM Partners
+export const dmPartners = {
+	list: () => request<{ partners: any[] }>('GET', '/api/dm/partners')
+};
+
 // Agents
 export const agents = {
 	list: () => request<{ agents: any[] }>('GET', '/api/agents'),

web/src/lib/components/Sidebar.svelte

@@ -3,12 +3,13 @@
 	import { goto } from '$app/navigation';
 	import { user, logout } from '$lib/stores/auth';
 	import { notifications } from '$lib/stores/notifications';
-	import { channels as channelsApi, agents as agentsApi, deadLetters as deadLettersApi } from '$lib/api/client';
+	import { channels as channelsApi, agents as agentsApi, deadLetters as deadLettersApi, dmPartners as dmPartnersApi } from '$lib/api/client';
 
 	let { open = false, onclose = () => {} }: { open?: boolean; onclose?: () => void } = $props();
 
 	let channelList = $state<any[]>([]);
 	let agentList = $state<any[]>([]);
+	let dmPartnerList = $state<any[]>([]);
 	let deadLetterCount = $state(0);
 
 	let channelsExpanded = $state(true);
@@ -25,14 +26,16 @@
 
 	async function loadSidebarData() {
 		try {
-			const [chRes, agRes, dlRes] = await Promise.all([
+			const [chRes, agRes, dlRes, dmRes] = await Promise.all([
 				channelsApi.list(),
 				agentsApi.list(),
-				deadLettersApi.count().catch(() => ({ count: 0 }))
+				deadLettersApi.count().catch(() => ({ count: 0 })),
+				dmPartnersApi.list().catch(() => ({ partners: [] }))
 			]);
 			channelList = chRes.channels ?? [];
 			agentList = agRes.agents ?? [];
 			deadLetterCount = dlRes.count ?? 0;
+			dmPartnerList = dmRes.partners ?? [];
 		} catch {
 			// handled
 		}
@@ -55,15 +58,8 @@
 		return count > 99 ? '99+' : String(count);
 	}
 
-	// Filter DM list: only show human agents + AI agents with unread DMs.
-	// This hides agent-to-agent internal conversations from the sidebar.
-	let dmAgentList = $derived(
-		agentList.filter(agent => {
-			if (agent.type !== 'ai') return true;
-			const unread = $notifications.dms.get(agent.name) ?? 0;
-			return unread > 0;
-		})
-	);
+	// DM partners list is loaded from the API — shows agents you have
+	// actual conversations with, ordered by most recent message.
 
 	const adminLinks = [
 		{ href: '/agents', label: 'Agents' },
@@ -219,30 +215,23 @@
 			</button>
 			{#if dmsExpanded}
 				<div class="mt-0.5">
-					{#if dmAgentList.length === 0}
-						<p class="px-3 py-1 text-xs text-text-secondary italic">No agents</p>
+					{#if dmPartnerList.length === 0}
+						<p class="px-3 py-1 text-xs text-text-secondary italic">No conversations</p>
 					{:else}
-						{#each dmAgentList as agent}
-							{@const dmUnread = $notifications.dms.get(agent.name) ?? 0}
+						{#each dmPartnerList as partner}
 							<a
-								href="/dm/{agent.name}"
-								class="sidebar-item {isActive('/dm/' + agent.name) ? 'sidebar-item-active' : ''}"
+								href="/dm/{partner.name}"
+								class="sidebar-item {isActive('/dm/' + partner.name) ? 'sidebar-item-active' : ''}"
 								onclick={handleNavClick}
 							>
 								<span class="relative flex-shrink-0">
 									<span class="w-5 h-5 rounded-full bg-bg-tertiary flex items-center justify-center text-[10px] font-bold text-text-secondary">
-										{(agent.display_name || agent.name).charAt(0).toUpperCase()}
+										{(partner.display_name || partner.name).charAt(0).toUpperCase()}
 									</span>
-									<span
-										class="absolute -bottom-0.5 -right-0.5 w-2 h-2 rounded-full border border-bg-secondary {agent.status === 'active' ? 'bg-accent-green' : 'bg-text-secondary'}"
-									></span>
 								</span>
-								<span class="truncate {dmUnread > 0 ? 'font-bold text-text-primary' : ''}">{agent.display_name || agent.name}</span>
-								<span class="text-[9px] text-text-secondary flex-shrink-0">(you)</span>
-								{#if dmUnread > 0}
-									<span class="ml-auto text-[10px] font-bold text-white bg-accent-red px-1.5 py-0.5 rounded-full min-w-[18px] text-center flex-shrink-0">{badgeText(dmUnread)}</span>
-								{:else if agent.type === 'ai'}
-									<span class="ml-auto text-[9px] font-mono text-accent-purple bg-accent-purple/10 px-1 rounded flex-shrink-0">AI</span>
+								<span class="truncate {partner.unread > 0 ? 'font-bold text-text-primary' : ''}">{partner.display_name || partner.name}</span>
+								{#if partner.unread > 0}
+									<span class="ml-auto text-[10px] font-bold text-white bg-accent-red px-1.5 py-0.5 rounded-full min-w-[18px] text-center flex-shrink-0">{badgeText(partner.unread)}</span>
 								{/if}
 							</a>
 						{/each}