Keep legacy daemon agents attached to workspaces

Old daemons can report agents by cwd without workspace IDs. Build path-backed workspace rows for that compatibility path and reapply ownership to legacy snapshots so tab reconciliation keeps those agents visible.

packages/app/src/panels/agent-panel.tsx

@@ -83,6 +83,7 @@ import type { PendingPermission } from "@/types/shared";
 import type { StreamItem } from "@/types/stream";
 import { getInitDeferred, getInitKey } from "@/utils/agent-initialization";
 import { derivePendingPermissionKey, normalizeAgentSnapshot } from "@/utils/agent-snapshots";
+import { applyLegacyDaemonWorkspaceOwnership } from "@/workspace/legacy-daemon-workspaces";
 import type { WorkspaceFileOpenRequest } from "@/workspace/file-open";
 import { navigateToAgent } from "@/utils/navigate-to-agent";
 import { deriveSidebarStateBucket } from "@/utils/sidebar-agent-state";
@@ -238,10 +239,13 @@ function storeFetchedAgentDetail(input: {
   result: NonNullable<FetchAgentResult>;
 }): Agent {
   const normalized = normalizeAgentSnapshot(input.result.agent, input.serverId);
-  const hydrated: Agent = {
-    ...normalized,
-    projectPlacement: input.result.project,
-  };
+  const hydrated: Agent = applyLegacyDaemonWorkspaceOwnership({
+    serverId: input.serverId,
+    agent: {
+      ...normalized,
+      projectPlacement: input.result.project,
+    },
+  });
   const store = useSessionStore.getState();
 
   if (shouldStoreFetchedAgentInActiveDirectory(hydrated)) {
@@ -345,9 +349,10 @@ function DraftPanel() {
   const handleCreated = useCallback(
     (agentSnapshot: Parameters<typeof normalizeAgentSnapshot>[0]) => {
       const normalized = normalizeAgentSnapshot(agentSnapshot, serverId);
+      const agent = applyLegacyDaemonWorkspaceOwnership({ serverId, agent: normalized });
       useSessionStore.getState().setAgents(serverId, (prev) => {
         const next = new Map(prev);
-        next.set(agentSnapshot.id, normalized);
+        next.set(agentSnapshot.id, agent);
         return next;
       });
       retargetCurrentTab({ kind: "agent", agentId: agentSnapshot.id });