fix(precedent-library): queue listing must include internal_committee too

Earlier commit afcc481 opened request_metadata_extraction and
request_halacha_extraction to all source kinds — but
list_pending_extraction_requests still hard-filtered to external_upload.

Result: stamping a queue request on an internal_committee row succeeded
silently, but the worker (and the queue badge) never saw it. Even with
the auto-wakeup added in c7132ba the CEO would wake, find 0 pending
items, and exit.

Drop the legacy filter so the queue listing matches the writer side.

Coolify deploy required for the FastAPI container to pick this up.

mcp-server/src/legal_mcp/services/db.py

@@ -2510,12 +2510,15 @@ async def list_pending_extraction_requests(
         else "halacha_extraction_requested_at"
     )
     pool = await get_pool()
+    # Drop the legacy ``source_kind = 'external_upload'`` filter — without it
+    # internal_committee rows could be stamped (we opened that gate in
+    # request_metadata_extraction / request_halacha_extraction) but stayed
+    # invisible to the worker forever.
     rows = await pool.fetch(
         f"""SELECT id, case_number, case_name, court, date,
                   practice_area, is_binding, {col} AS requested_at
             FROM case_law
             WHERE {col} IS NOT NULL
-              AND source_kind = 'external_upload'
             ORDER BY {col} ASC
             LIMIT $1""",
         limit,