fix(agent): search all agent stores when resolving --session-id (#13579)

* fix(agent): search all agent stores when resolving --session-id

When `--session-id` was provided without `--to` or `--agent`, the reverse
lookup only searched the default agent's session store. Sessions created
under a specific agent (e.g. `--agent mybot`) live in that agent's store
file, so the lookup silently failed and the session was not reused.

Now `resolveSessionKeyForRequest` iterates all configured agent stores
when the primary store doesn't contain the requested sessionId.

Fixes #12881

* fix: search other agent stores when --to key does not match --session-id

When --to derives a session key whose stored sessionId doesn't match the
requested --session-id, the cross-store search now also runs. This handles
the case where a user provides both --to and --session-id targeting a
session in a different agent's store.

src/commands/agent/session.ts

@@ -1,6 +1,7 @@
 import crypto from "node:crypto";
 import type { MsgContext } from "../../auto-reply/templating.js";
 import type { OpenClawConfig } from "../../config/config.js";
+import { listAgentIds } from "../../agents/agent-scope.js";
 import {
   normalizeThinkLevel,
   normalizeVerboseLevel,
@@ -78,6 +79,31 @@ export function resolveSessionKeyForRequest(opts: {
     }
   }
 
+  // When sessionId was provided but not found in the primary store, search all agent stores.
+  // Sessions created under a specific agent live in that agent's store file; the primary
+  // store (derived from the default agent) won't contain them.
+  // Also covers the case where --to derived a sessionKey that doesn't match the requested sessionId.
+  if (
+    opts.sessionId &&
+    !explicitSessionKey &&
+    (!sessionKey || sessionStore[sessionKey]?.sessionId !== opts.sessionId)
+  ) {
+    const allAgentIds = listAgentIds(opts.cfg);
+    for (const agentId of allAgentIds) {
+      if (agentId === storeAgentId) {
+        continue;
+      }
+      const altStorePath = resolveStorePath(sessionCfg?.store, { agentId });
+      const altStore = loadSessionStore(altStorePath);
+      const foundKey = Object.keys(altStore).find(
+        (key) => altStore[key]?.sessionId === opts.sessionId,
+      );
+      if (foundKey) {
+        return { sessionKey: foundKey, sessionStore: altStore, storePath: altStorePath };
+      }
+    }
+  }
+
   return { sessionKey, sessionStore, storePath };
 }