fix(desktop): refresh routed-profile Bot Chat transcripts (salvage #99333)

Two sites dropped profile ownership on the tile-transcript refresh path:

- tui_gateway/server.py _sessions_sig statted only the launch home's
  state.db, so a turn landing in a served sibling profile's store never
  produced sessions.changed. The watcher now also probes every profile
  home _profile_home() has resolved for this backend (empty set on
  single-profile installs — behavior byte-identical there).
- use-background-sync.ts reconcileTileTranscripts read the tile's
  transcript unscoped; it now passes the tile's ownerRoute scope, the
  same way reconcileActiveTranscript already does for the main pane, and
  keys the change signature by owner.

Reimplemented minimal from PR #99333 (the PR head's commit identity does
not match the GitHub author).

Co-authored-by: StodsEcho5 <250208229+StodsEcho5@users.noreply.github.com>

tests/tui_gateway/test_change_watcher.py

@@ -64,6 +64,23 @@ def test_state_db_move_broadcasts_sessions_changed(watcher_home):
     assert ("sessions.changed", {}) in events
 
 
+def test_served_profile_store_move_broadcasts_sessions_changed(watcher_home, monkeypatch):
+    """A backend serving a sibling profile must see that profile's state.db
+    move too — otherwise a routed profile's Bot Chat never refreshes (#99333)."""
+    home, events = watcher_home
+    bot_home = home / "profiles" / "bot"
+    bot_home.mkdir(parents=True)
+    monkeypatch.setattr(server, "_served_profile_homes", set())
+    monkeypatch.setattr("hermes_cli.profiles.get_profile_dir", lambda name: home / "profiles" / name)
+    assert server._profile_home("bot") == bot_home
+    server._broadcast_watched_changes(now=0.0)
+
+    (bot_home / "state.db").write_text("x")
+    server._broadcast_watched_changes(now=10.0)
+
+    assert ("sessions.changed", {}) in events
+
+
 def test_gateway_state_move_broadcasts_platforms_changed(watcher_home):
     home, events = watcher_home
     server._broadcast_watched_changes(now=0.0)

tui_gateway/server.py

@@ -2457,7 +2457,18 @@ def _profile_home(profile: str | None) -> Path | None:
     # Already the launch profile? No override needed.
     if home.resolve() == Path(_hermes_home).resolve():
         return None
-    return home if (home / "state.db").exists() or home.exists() else None
+    if (home / "state.db").exists() or home.exists():
+        # Remember every sibling home this backend was asked to serve so the
+        # change watcher stats its store too (#99333 class).
+        _served_profile_homes.add(home)
+        return home
+    return None
+
+
+# Profile homes served by this process besides the launch home — the only
+# extra stores the sessions watcher must probe. Empty on single-profile
+# installs, so their watcher stays byte-identical (two stats per tick).
+_served_profile_homes: set[Path] = set()
 
 
 def _profile_scoped(handler):
@@ -5203,15 +5214,17 @@ def _sessions_sig():
     """Newest mtime across state.db and its WAL — the cross-process change
     signal. Messaging-gateway turns and cron runs are written by OTHER
     processes that never touch this gateway's transports; the shared SQLite
-    file is the one thing they all move (#58671)."""
-    home = _watcher_home()
+    file is the one thing they all move (#58671). A backend serving several
+    profiles owns one store per profile, so every served sibling home is
+    probed too — otherwise a routed profile's Bot Chat never refreshes."""
     sig = None
-    for name in ("state.db", "state.db-wal"):
-        try:
-            mtime = (home / name).stat().st_mtime_ns
-        except OSError:
-            continue
-        sig = mtime if sig is None else max(sig, mtime)
+    for root in (_watcher_home(), *_served_profile_homes):
+        for name in ("state.db", "state.db-wal"):
+            try:
+                mtime = (root / name).stat().st_mtime_ns
+            except OSError:
+                continue
+            sig = mtime if sig is None else max(sig, mtime)
     return sig