diff --git a/docs/api/PROTOCOL.md b/docs/api/PROTOCOL.md
index c1a3f38..3be99bd 100644
--- a/docs/api/PROTOCOL.md
+++ b/docs/api/PROTOCOL.md
@@ -417,13 +417,19 @@ Useful for proactive compaction monitoring and operator dashboards.
 
 #### `sessions.list`
 
-List all sessions.
+List sessions with optional persisted inclusion, frontend filtering, and paging.
 
 **Request:**
 ```json
 {
   "id": 3,
-  "method": "sessions.list"
+  "method": "sessions.list",
+  "params": {
+    "includePersisted": true,
+    "frontend": "ws",
+    "limit": 50,
+    "offset": 0
+  }
 }
 ```
 
@@ -435,12 +441,27 @@ List all sessions.
     "sessions": [
       {
         "id": "telegram:123456",
-        "createdAt": "2025-02-13T10:00:00Z",
-        "lastActiveAt": "2025-02-13T12:00:00Z",
+        "frontend": "telegram",
+        "userId": "123456",
         "messageCount": 42,
-        "connectionCount": 1
+        "lastMessageAt": 1739448000000,
+        "config": {
+          "modelTier": "fast",
+          "queue": {
+            "mode": "followup",
+            "overflow": "drop_old",
+            "cap": 8,
+            "debounceMs": 250,
+            "summarizeOverflow": true
+          },
+          "elevation": {
+            "active": false,
+            "untilMs": 1739451600000
+          }
+        }
       }
-    ]
+    ],
+    "total": 1
   }
 }
 ```
diff --git a/docs/plans/state.json b/docs/plans/state.json
index adecbda..4b627ab 100644
--- a/docs/plans/state.json
+++ b/docs/plans/state.json
@@ -5060,10 +5060,26 @@
         "docs/plans/state.json"
       ],
       "test_status": "pnpm test:run src/tools/builtin/agent-delegate.test.ts + pnpm typecheck passing"
+    },
+    "post-parity-ops-ux-reliability-capability-sessions-surface": {
+      "status": "completed",
+      "date": "2026-02-18",
+      "updated": "2026-02-18",
+      "summary": "Delivered a post-parity 3-track slice in one sessions-focused release: operator UX polish (dashboard Sessions page now shows frontend/model/queue/last-activity with frontend filter + inactive toggle), reliability hardening (`sessions.list`/`sessions.history` now validate and bound pagination/filter params), and capability expansion (`sessions.list` now supports persisted inclusion, frontend filtering, total counts, and per-session config snapshot metadata for model/queue/elevation visibility).",
+      "files_modified": [
+        "src/session/manager.ts",
+        "src/session/manager.test.ts",
+        "src/gateway/handlers/sessions.ts",
+        "src/gateway/handlers/handlers.test.ts",
+        "src/gateway/ui/pages/sessions.js",
+        "docs/api/PROTOCOL.md",
+        "docs/plans/state.json"
+      ],
+      "test_status": "pnpm test:run src/session/manager.test.ts src/gateway/handlers/handlers.test.ts + pnpm typecheck passing"
     }
   },
   "overall_progress": {
-    "total_test_count": 1882,
+    "total_test_count": 1887,
     "all_tests_passing": true,
     "p0_completion": "3/3 (100%)",
     "p1_completion": "4/4 (100%)",
@@ -5083,7 +5099,7 @@
     "gmail_auth_cli": "flynn gmail-auth command implemented with OAuth2 flow, doctor check, config routed to Telegram",
     "native_audio_support": "completed — smart routing for native audio (Gemini/OpenAI/GitHub) vs Whisper transcription fallback",
     "remaining_phases_completion": "Phase 1: 3/3 (100%) — context levels, command registry, memory structure. Phase 2: 3/3 (100%) — component registry, confidence routing, history index. Phase 3: 2/2 (100%) — adaptive memory/compaction, truthfulness/autonomy hardening",
-    "next_up": "Define and execute post-parity roadmap slices beyond OpenClaw gap closure (operator UX polish, reliability hardening, and new capability expansion)"
+    "next_up": "Monitor production feedback for the expanded sessions operator surface and prioritize next post-parity slice from reliability and capability roadmap"
   },
   "soul_md_and_cron_create": {
     "date": "2026-02-11",
diff --git a/src/gateway/handlers/handlers.test.ts b/src/gateway/handlers/handlers.test.ts
index dbe946b..cd4adbd 100644
--- a/src/gateway/handlers/handlers.test.ts
+++ b/src/gateway/handlers/handlers.test.ts
@@ -465,6 +465,7 @@ describe('session handlers', () => {
   const mockSessionManager = {
     listSessions: vi.fn(() => ['ws:test']),
     getSession: vi.fn(() => mockSession),
+    getSessionConfig: vi.fn((_frontend: string, _userId: string, _key: string) => undefined),
     transferSession: vi.fn(),
     closeSession: vi.fn(),
   };
@@ -480,15 +481,49 @@ describe('session handlers', () => {
     mockSession.getHistory.mockReturnValue(mockHistory);
   });
 
-  it('sessions.list returns session list with message counts', async () => {
+  it('sessions.list returns session list with message counts and metadata', async () => {
     const req: GatewayRequest = { id: 1, method: 'sessions.list' };
     const result = await handlers['sessions.list'](req) as GatewayResponse;
 
     expect(result.id).toBe(1);
-    const r = result.result as { sessions: Array<{ id: string; messageCount: number }> };
+    const r = result.result as { sessions: Array<{ id: string; messageCount: number; frontend: string; userId: string }>; total: number };
     expect(r.sessions).toHaveLength(1);
     expect(r.sessions[0].id).toBe('ws:test');
+    expect(r.sessions[0].frontend).toBe('ws');
+    expect(r.sessions[0].userId).toBe('test');
     expect(r.sessions[0].messageCount).toBe(2);
+    expect(r.total).toBe(1);
+  });
+
+  it('sessions.list supports persisted inclusion, frontend filter, and paging', async () => {
+    mockSessionManager.listSessions.mockReturnValue(['ws:a', 'ws:b', 'telegram:c']);
+    const req: GatewayRequest = {
+      id: 10,
+      method: 'sessions.list',
+      params: { includePersisted: true, frontend: 'ws', limit: 1, offset: 1 },
+    };
+    const result = await handlers['sessions.list'](req) as GatewayResponse;
+    const payload = result.result as { sessions: Array<{ id: string }>; total: number };
+    expect(mockSessionManager.listSessions).toHaveBeenCalledWith({ includePersisted: true, frontend: 'ws' });
+    expect(payload.total).toBe(3);
+    expect(payload.sessions).toHaveLength(1);
+    expect(payload.sessions[0].id).toBe('ws:b');
+  });
+
+  it('sessions.list rejects invalid pagination and filters', async () => {
+    const badLimit = await handlers['sessions.list']({
+      id: 11,
+      method: 'sessions.list',
+      params: { limit: -1 },
+    }) as GatewayError;
+    expect(badLimit.error.code).toBe(ErrorCode.InvalidRequest);
+
+    const badFrontend = await handlers['sessions.list']({
+      id: 12,
+      method: 'sessions.list',
+      params: { frontend: '' },
+    }) as GatewayError;
+    expect(badFrontend.error.code).toBe(ErrorCode.InvalidRequest);
   });
 
   it('sessions.history returns messages with pagination', async () => {
@@ -507,6 +542,15 @@ describe('session handlers', () => {
     expect(result.error.code).toBe(ErrorCode.InvalidRequest);
   });
 
+  it('sessions.history rejects invalid pagination values', async () => {
+    const badOffset = await handlers['sessions.history']({
+      id: 13,
+      method: 'sessions.history',
+      params: { sessionId: 'ws:test', offset: -1 },
+    }) as GatewayError;
+    expect(badOffset.error.code).toBe(ErrorCode.InvalidRequest);
+  });
+
   it('sessions.create creates a new session', async () => {
     const req: GatewayRequest = { id: 4, method: 'sessions.create', params: { sessionId: 'ws:new' } };
     const result = await handlers['sessions.create'](req) as GatewayResponse;
diff --git a/src/gateway/handlers/sessions.ts b/src/gateway/handlers/sessions.ts
index 2e1b98e..46fca9e 100644
--- a/src/gateway/handlers/sessions.ts
+++ b/src/gateway/handlers/sessions.ts
@@ -8,18 +8,106 @@ export interface SessionHandlerDeps {
   sessionBridge?: SessionBridge;
 }
 
+const MAX_SESSION_LIST_LIMIT = 500;
+const MAX_SESSION_HISTORY_LIMIT = 500;
+
+function parsePositiveInt(value: unknown, field: string, max: number): { value: number } | { error: string } {
+  if (value === undefined) {
+    return { value: 0 };
+  }
+  if (typeof value !== 'number' || !Number.isFinite(value) || value < 0 || !Number.isInteger(value)) {
+    return { error: `${field} must be a non-negative integer` };
+  }
+  if (value > max) {
+    return { error: `${field} must be <= ${max}` };
+  }
+  return { value };
+}
+
 export function createSessionHandlers(deps: SessionHandlerDeps) {
   return {
     'sessions.list': async (request: GatewayRequest): Promise<OutboundMessage> => {
-      const sessionIds = deps.sessionManager.listSessions();
-      const sessions = sessionIds.map(id => ({
-        id,
-        messageCount: deps.sessionManager.getSession(
-          id.split(':')[0],
-          id.split(':').slice(1).join(':'),
-        ).getHistory().length,
-      }));
-      return makeResponse(request.id, { sessions });
+      const params = request.params as {
+        includePersisted?: boolean;
+        frontend?: string;
+        limit?: number;
+        offset?: number;
+      } | undefined;
+
+      const parsedLimit = parsePositiveInt(params?.limit, 'limit', MAX_SESSION_LIST_LIMIT);
+      if ('error' in parsedLimit) {
+        return makeError(request.id, ErrorCode.InvalidRequest, parsedLimit.error);
+      }
+      const parsedOffset = parsePositiveInt(params?.offset, 'offset', Number.MAX_SAFE_INTEGER);
+      if ('error' in parsedOffset) {
+        return makeError(request.id, ErrorCode.InvalidRequest, parsedOffset.error);
+      }
+      if (params?.frontend !== undefined && (typeof params.frontend !== 'string' || !params.frontend.trim())) {
+        return makeError(request.id, ErrorCode.InvalidRequest, 'frontend must be a non-empty string');
+      }
+
+      const sessionIds = deps.sessionManager.listSessions({
+        includePersisted: params?.includePersisted === true,
+        frontend: params?.frontend,
+      });
+
+      const offset = parsedOffset.value;
+      const end = parsedLimit.value > 0 ? offset + parsedLimit.value : undefined;
+      const pagedSessionIds = sessionIds.slice(offset, end);
+
+      const sessions = pagedSessionIds.map((id) => {
+        const parts = id.split(':');
+        const frontend = parts[0];
+        const userId = parts.slice(1).join(':');
+        const session = deps.sessionManager.getSession(frontend, userId);
+        const history = session.getHistory();
+        const lastMessageAt = history.length > 0 ? (history[history.length - 1].timestamp ?? undefined) : undefined;
+
+        const modelTier = deps.sessionManager.getSessionConfig(frontend, userId, 'modelTier');
+        const queueMode = deps.sessionManager.getSessionConfig(frontend, userId, 'queue.mode');
+        const queueOverflow = deps.sessionManager.getSessionConfig(frontend, userId, 'queue.overflow');
+        const queueCapRaw = deps.sessionManager.getSessionConfig(frontend, userId, 'queue.cap');
+        const queueDebounceRaw = deps.sessionManager.getSessionConfig(frontend, userId, 'queue.debounce_ms');
+        const queueSummarizeOverflowRaw = deps.sessionManager.getSessionConfig(frontend, userId, 'queue.summarize_overflow');
+        const elevationUntilRaw = deps.sessionManager.getSessionConfig(frontend, userId, 'elevation.until_ms');
+        const elevationReason = deps.sessionManager.getSessionConfig(frontend, userId, 'elevation.reason');
+
+        const queueCap = queueCapRaw ? Number.parseInt(queueCapRaw, 10) : undefined;
+        const queueDebounceMs = queueDebounceRaw ? Number.parseInt(queueDebounceRaw, 10) : undefined;
+        const elevationUntilMs = elevationUntilRaw ? Number.parseInt(elevationUntilRaw, 10) : undefined;
+        const queueSummarizeOverflow = queueSummarizeOverflowRaw === 'true'
+          ? true
+          : queueSummarizeOverflowRaw === 'false'
+            ? false
+            : undefined;
+
+        return {
+          id,
+          frontend,
+          userId,
+          messageCount: history.length,
+          lastMessageAt,
+          config: {
+            modelTier,
+            queue: {
+              mode: queueMode,
+              overflow: queueOverflow,
+              cap: Number.isFinite(queueCap) ? queueCap : undefined,
+              debounceMs: Number.isFinite(queueDebounceMs) ? queueDebounceMs : undefined,
+              summarizeOverflow: queueSummarizeOverflow,
+            },
+            elevation: {
+              active: Number.isFinite(elevationUntilMs) ? Number(elevationUntilMs) > Date.now() : false,
+              untilMs: Number.isFinite(elevationUntilMs) ? elevationUntilMs : undefined,
+              reason: elevationReason || undefined,
+            },
+          },
+        };
+      });
+      return makeResponse(request.id, {
+        sessions,
+        total: sessionIds.length,
+      });
     },
 
     'sessions.history': async (request: GatewayRequest): Promise<OutboundMessage> => {
@@ -28,15 +116,24 @@ export function createSessionHandlers(deps: SessionHandlerDeps) {
         return makeError(request.id, ErrorCode.InvalidRequest, 'sessionId is required');
       }
 
-      const { sessionId, limit, offset } = params;
+      const parsedLimit = parsePositiveInt(params.limit, 'limit', MAX_SESSION_HISTORY_LIMIT);
+      if ('error' in parsedLimit) {
+        return makeError(request.id, ErrorCode.InvalidRequest, parsedLimit.error);
+      }
+      const parsedOffset = parsePositiveInt(params.offset, 'offset', Number.MAX_SAFE_INTEGER);
+      if ('error' in parsedOffset) {
+        return makeError(request.id, ErrorCode.InvalidRequest, parsedOffset.error);
+      }
+
+      const { sessionId } = params;
       const parts = sessionId.split(':');
       const frontend = parts[0];
       const userId = parts.slice(1).join(':');
       const session = deps.sessionManager.getSession(frontend, userId);
       const allMessages = session.getHistory();
 
-      const start = offset ?? 0;
-      const end = limit ? start + limit : allMessages.length;
+      const start = parsedOffset.value;
+      const end = parsedLimit.value > 0 ? start + parsedLimit.value : allMessages.length;
       const messages = allMessages.slice(start, end);
 
       return makeResponse(request.id, {
diff --git a/src/gateway/ui/pages/sessions.js b/src/gateway/ui/pages/sessions.js
index 72f74f2..a002784 100644
--- a/src/gateway/ui/pages/sessions.js
+++ b/src/gateway/ui/pages/sessions.js
@@ -12,6 +12,30 @@ function escapeHtml(text) {
 
 let _client = null;
 let _el = null;
+let _frontendFilter = '';
+let _includeInactive = true;
+
+function formatTime(ts) {
+  if (!ts || !Number.isFinite(ts)) {return '—';}
+  try {
+    return new Date(ts).toLocaleString();
+  } catch {
+    return '—';
+  }
+}
+
+function formatQueue(config) {
+  const queue = config?.queue;
+  if (!queue?.mode) {return 'default';}
+  const parts = [queue.mode];
+  if (typeof queue.debounceMs === 'number') {
+    parts.push(`${queue.debounceMs}ms`);
+  }
+  if (typeof queue.cap === 'number') {
+    parts.push(`cap:${queue.cap}`);
+  }
+  return parts.join(' · ');
+}
 
 async function loadSessionList() {
   if (!_client || !_el) {return;}
@@ -21,7 +45,11 @@ async function loadSessionList() {
   if (detailContainer) {detailContainer.innerHTML = '';}
 
   try {
-    const result = await _client.call('sessions.list');
+    const params = {
+      includePersisted: _includeInactive,
+      frontend: _frontendFilter || undefined,
+    };
+    const result = await _client.call('sessions.list', params);
     const sessions = result.sessions ?? [];
 
     if (sessions.length === 0) {
@@ -34,7 +62,11 @@ async function loadSessionList() {
         <thead>
           <tr>
             <th>Session ID</th>
+            <th>Frontend</th>
             <th>Messages</th>
+            <th>Model</th>
+            <th>Queue</th>
+            <th>Last Activity</th>
             <th>Actions</th>
           </tr>
         </thead>
@@ -45,7 +77,11 @@ async function loadSessionList() {
       html += `
         <tr>
           <td><a href="#" class="session-view-link" data-id="${escapeHtml(s.id)}">${escapeHtml(s.id)}</a></td>
+          <td>${escapeHtml(s.frontend ?? (String(s.id).split(':')[0] || 'unknown'))}</td>
           <td>${s.messageCount ?? 0}</td>
+          <td>${escapeHtml(s.config?.modelTier ?? 'default')}</td>
+          <td>${escapeHtml(formatQueue(s.config))}</td>
+          <td>${escapeHtml(formatTime(s.lastMessageAt))}</td>
           <td class="session-actions">
             <button class="btn btn-secondary session-view-btn" data-id="${escapeHtml(s.id)}">View</button>
             <button class="btn btn-danger session-delete-btn" data-id="${escapeHtml(s.id)}">Delete</button>
@@ -132,10 +168,53 @@ export const SessionsPage = {
 
     el.innerHTML = `
       <h1 class="page-title">Sessions</h1>
+      <div class="status-row" style="margin-bottom: 0.75rem; gap: 0.75rem; flex-wrap: wrap;">
+        <label class="text-sm text-muted">Frontend
+          <select id="sessions-frontend-filter" style="margin-left: 0.35rem;">
+            <option value="">All</option>
+            <option value="ws">ws</option>
+            <option value="tui">tui</option>
+            <option value="telegram">telegram</option>
+            <option value="slack">slack</option>
+            <option value="discord">discord</option>
+            <option value="mattermost">mattermost</option>
+          </select>
+        </label>
+        <label class="text-sm text-muted">
+          <input id="sessions-include-inactive" type="checkbox" checked />
+          Include inactive/persisted
+        </label>
+        <button id="sessions-refresh-btn" class="btn btn-secondary">Refresh</button>
+      </div>
       <div id="sessions-list"></div>
       <div id="session-detail"></div>
     `;
 
+    const frontendSelect = el.querySelector('#sessions-frontend-filter');
+    if (frontendSelect) {
+      frontendSelect.value = _frontendFilter;
+      frontendSelect.addEventListener('change', async () => {
+        _frontendFilter = frontendSelect.value;
+        await loadSessionList();
+      });
+    }
+
+    const inactiveToggle = el.querySelector('#sessions-include-inactive');
+    if (inactiveToggle) {
+      inactiveToggle.checked = _includeInactive;
+      inactiveToggle.addEventListener('change', async () => {
+        _includeInactive = inactiveToggle.checked;
+        await loadSessionList();
+      });
+    }
+
+    const refreshBtn = el.querySelector('#sessions-refresh-btn');
+    if (refreshBtn) {
+      refreshBtn.addEventListener('click', async () => {
+        await loadSessionList();
+      });
+    }
+
     await loadSessionList();
   },
 
diff --git a/src/session/manager.test.ts b/src/session/manager.test.ts
index d4351f1..3019695 100644
--- a/src/session/manager.test.ts
+++ b/src/session/manager.test.ts
@@ -59,6 +59,19 @@ describe('SessionManager', () => {
     expect(sessions).toContain('tui:local');
   });
 
+  it('can include persisted sessions and frontend filters', () => {
+    const persisted = manager.getSession('telegram', 'persisted-user');
+    persisted.addMessage({ role: 'user', content: 'persist me' });
+
+    // Simulate daemon restart with empty in-memory map.
+    manager.evictSessions(['telegram:persisted-user']);
+    manager.getSession('ws', 'active-user');
+
+    expect(manager.listSessions()).toEqual(['ws:active-user']);
+    expect(manager.listSessions({ includePersisted: true })).toEqual(['telegram:persisted-user', 'ws:active-user']);
+    expect(manager.listSessions({ includePersisted: true, frontend: 'telegram' })).toEqual(['telegram:persisted-user']);
+  });
+
   it('indexes and searches history when enabled', () => {
     manager = new SessionManager(store, {
       enabled: true,
diff --git a/src/session/manager.ts b/src/session/manager.ts
index cbb7727..6967b13 100644
--- a/src/session/manager.ts
+++ b/src/session/manager.ts
@@ -154,8 +154,22 @@ export class SessionManager {
     auditLogger?.sessionTransfer(fromSession.id, toSession.id, history.length);
   }
 
-  listSessions(): string[] {
-    return Array.from(this.sessions.keys());
+  listSessions(opts?: { includePersisted?: boolean; frontend?: string }): string[] {
+    const ids = new Set<string>(this.sessions.keys());
+    if (opts?.includePersisted) {
+      for (const id of this.store.listSessions()) {
+        ids.add(id);
+      }
+    }
+
+    let sessions = Array.from(ids.values());
+    if (opts?.frontend) {
+      const prefix = `${opts.frontend}:`;
+      sessions = sessions.filter((id) => id.startsWith(prefix));
+    }
+
+    sessions.sort((a, b) => a.localeCompare(b));
+    return sessions;
   }
 
   closeSession(frontend: string, userId: string): void {