Add reusable LLM parser profiles with multi-event extract.

Support kind=llm profiles (instruction/schema), optional multi-event posts via #eN URLs, and recover stale running/queued parse jobs after worker crashes.

Co-authored-by: Cursor <cursoragent@cursor.com>

centers/analytics/api/app/services/migrations.py

@@ -23,11 +23,14 @@ def migrate_schema(engine: Engine) -> None:
         if "channel_id" not in columns:
             statements.append("ALTER TABLE parse_jobs ADD COLUMN channel_id INTEGER")
 
-    # create_all handles new tables; FKs on existing DBs may need indexes
-    if "parse_jobs" in tables:
-        # Re-inspect after potential adds is not needed for FK constraints here —
-        # create_all + nullable FKs are enough for MVP; optional constraints below.
-        pass
+    if "parser_profiles" in tables:
+        columns = {col["name"] for col in inspector.get_columns("parser_profiles")}
+        if "kind" not in columns:
+            statements.append(
+                "ALTER TABLE parser_profiles ADD COLUMN kind VARCHAR(50) NOT NULL DEFAULT 'heuristic'"
+            )
+        if "llm_profile" not in columns:
+            statements.append("ALTER TABLE parser_profiles ADD COLUMN llm_profile JSON")
 
     if not statements:
         return