fix: exclude exported cases from stale; add weekly-feedback-job handler to CEO

- /api/cases/stale: exclude 'exported' status — exported cases await Dafna's
  review intentionally, they are not stuck
- legal-ceo.md: add routing for weekly-feedback-job reason + explicit handler
  (analyze feedback, update decision-lessons.md, close issue)

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

web/app.py

@@ -1137,7 +1137,7 @@ async def list_cases(
 
 @app.get("/api/cases/stale")
 async def api_stale_cases(days: int = 3):
-    """Return cases that haven't been updated in N days and are not in 'final' or 'new' status."""
+    """Return cases that haven't been updated in N days and are not in a terminal/waiting status."""
     if days <= 0:
         return {"cases": [], "total": 0}
     pool = await db.get_pool()
@@ -1147,7 +1147,7 @@ async def api_stale_cases(days: int = 3):
             SELECT case_number, title, status,
                    EXTRACT(DAY FROM (now() - updated_at))::int AS days_stale
             FROM cases
-            WHERE status NOT IN ('final', 'new')
+            WHERE status NOT IN ('final', 'new', 'exported')
               AND updated_at < now() - make_interval(days => $1)
             ORDER BY updated_at ASC  -- oldest stale first (longest overdue = highest priority)
             """,