Edit workspace files directly on web (#2270)

* feat(files): edit workspace files on web

Keep source buffers synchronized with host file changes and require an explicit overwrite or reload when revisions diverge.

* feat(panels): surface and protect modified tabs

Expose tooltip and modification state through the generic panel boundary so tabs can show stable metadata and guard every close route consistently.

* fix(tests): use portable fake timeout handle

* fix(files): harden editor conflict handling

Preserve modified panel state across tab eviction, use precise revisions for optimistic writes, coalesce concurrent file watchers, and localize the editor interface.

* fix(files): close editor concurrency gaps

Coalesce clean reloads, preserve subscriber identities and file permissions, suspend pending saves during close confirmation, and carry precise revisions through file reads.

* test(files): expect read revision metadata

packages/app/src/subagents/track.tsx

@@ -41,8 +41,11 @@ export interface SubagentsTrackProps {
 const SUBAGENTS_LIST_MAX_HEIGHT = 200;
 
 function buildRowPresentation(row: SubagentRow): WorkspaceTabPresentation {
+  const data = buildSubagentRowPresentationData(row);
   return {
-    ...buildSubagentRowPresentationData(row),
+    ...data,
+    tooltip: data.label,
+    modified: false,
     icon: getProviderIcon(row.provider),
   };
 }