Debug DB problem

paskia/db/jsonl.py

@@ -248,10 +248,13 @@ class JsonlStore:
         # Check for out-of-transaction modifications
         current_state = msgspec.to_builtins(self.db)
         if current_state != self._previous_builtins:
+            diff = compute_diff(self._previous_builtins, current_state)
+            diff_json = json.dumps(diff, default=str, indent=2)
             _logger.error(
                 "Database state modified outside of transaction! "
                 "This indicates a bug where DB changes occurred without a transaction wrapper. "
-                "Resetting to last known state from JSONL file."
+                "Resetting to last known state from JSONL file.\n"
+                f"Changes detected:\n{diff_json}"
             )
             # Hard reset to last known good state
             decoder = msgspec.json.Decoder(DB)

paskia/db/migrations.py

@@ -31,4 +31,20 @@ def apply_migrations(data_dict: dict) -> bool:
         migrated = True
         _logger.info("Applied schema migration: v0 -> v1 (removed org.created_at)")
 
+    if db_version < 2:
+        # Migration v1 -> v2: Convert null ip/user_agent to empty strings in sessions
+        if "sessions" in data_dict:
+            for session_data in data_dict["sessions"].values():
+                if session_data.get("ip") is None:
+                    session_data["ip"] = ""
+                if session_data.get("user_agent") is None:
+                    session_data["user_agent"] = ""
+                if session_data.get("host") is None:
+                    session_data["host"] = ""
+        data_dict["v"] = 2
+        migrated = True
+        _logger.info(
+            "Applied schema migration: v1 -> v2 (null session fields -> empty strings)"
+        )
+
     return migrated