fix: show session friendly name in resume message and status bar

/history/{session_id} now returns a 'name' field alongside messages.
resumeSession() uses data.name first, then the sessionNames map, then
raw ID as fallback — so named sessions display correctly even on page
load before the sessions panel has been opened.

'Resumed session X' message also now shows the friendly name.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

cortex/routers/chat.py

@@ -8,7 +8,7 @@ from pydantic import BaseModel
 from context_loader import load_context
 from llm_client import complete
 from session_logger import log_turn
-from session_store import load as load_session, save as save_session, list_all, generate_session_id, delete as delete_session, rename as rename_session
+from session_store import load as load_session, save as save_session, list_all, generate_session_id, delete as delete_session, rename as rename_session, get_name as get_session_name
 from config import settings
 from persona import set_context, validate as validate_persona
 from auth_utils import COOKIE_NAME, decode_token
@@ -264,7 +264,8 @@ async def get_history(
     persona: str = Query("inara"),
 ) -> dict:
     _set_ctx(user, persona)
-    return {"session_id": session_id, "messages": load_session(session_id)}
+    name = get_session_name(session_id)
+    return {"session_id": session_id, "name": name, "messages": load_session(session_id)}
 
 
 @router.get("/sessions")