diff --git a/.openclaw-sync/source.json b/.openclaw-sync/source.json
index 083d3ae06..7443fe468 100644
--- a/.openclaw-sync/source.json
+++ b/.openclaw-sync/source.json
@@ -1,5 +1,5 @@
 {
   "repository": "openclaw/openclaw",
-  "sha": "1e9faa2a5952b29acbef6780fb6ff024def45c8e",
-  "syncedAt": "2026-04-28T19:36:11.541Z"
+  "sha": "c500e8704f4efc723758dd75f1b6689727832a0b",
+  "syncedAt": "2026-04-28T19:38:42.046Z"
 }
diff --git a/docs/concepts/agent-loop.md b/docs/concepts/agent-loop.md
index ad63d4e4b..0ad8e7652 100644
--- a/docs/concepts/agent-loop.md
+++ b/docs/concepts/agent-loop.md
@@ -162,6 +162,7 @@ surfaces, while Codex native hooks remain a separate lower-level Codex mechanism
 
 - `agent.wait` default: 30s (just the wait). `timeoutMs` param overrides.
 - Agent runtime: `agents.defaults.timeoutSeconds` default 172800s (48 hours); enforced in `runEmbeddedPiAgent` abort timer.
+- Stuck-session recovery: with diagnostics enabled, `diagnostics.stuckSessionWarnMs` detects long `processing` sessions. Active embedded runs, active reply operations, and active session-lane tasks remain warning-only by default; if diagnostics show no active work for the session, the watchdog releases the affected session lane so queued startup work can drain.
 - Model idle timeout: OpenClaw aborts a model request when no response chunks arrive before the idle window. `models.providers.<id>.timeoutSeconds` extends this idle watchdog for slow local/self-hosted providers; otherwise OpenClaw uses `agents.defaults.timeoutSeconds` when configured, capped at 120s by default. Cron-triggered runs with no explicit model or agent timeout disable the idle watchdog and rely on the cron outer timeout.
 - Provider HTTP request timeout: `models.providers.<id>.timeoutSeconds` applies to that provider's model HTTP fetches, including connect, headers, body, SDK request timeout, total guarded-fetch abort handling, and model stream idle watchdog. Use this for slow local/self-hosted providers such as Ollama before raising the whole agent runtime timeout.
 
diff --git a/docs/concepts/queue.md b/docs/concepts/queue.md
index fc92c82b9..81763671a 100644
--- a/docs/concepts/queue.md
+++ b/docs/concepts/queue.md
@@ -85,6 +85,7 @@ Defaults: `debounceMs: 1000`, `cap: 20`, `drop: summarize`.
 
 - If commands seem stuck, enable verbose logs and look for “queued for …ms” lines to confirm the queue is draining.
 - If you need queue depth, enable verbose logs and watch for queue timing lines.
+- When diagnostics are enabled, sessions that remain in `processing` past `diagnostics.stuckSessionWarnMs` log a stuck-session warning. Active embedded runs, active reply operations, and active lane tasks remain warning-only by default; stale startup bookkeeping with no active session work can release the affected session lane so queued work drains.
 
 ## Related