Debug JSONL updates.

paskia/db/background.py

@@ -87,6 +87,7 @@ async def start_background():
     global _background_task
     if _background_task is None:
         _background_task = asyncio.create_task(_background_loop())
+        _logger.info("Database background task started")
 
 
 async def stop_background():

paskia/db/jsonl.py

@@ -119,6 +119,9 @@ async def flush_changes(
         # Append all lines in a single write (binary mode for Windows compatibility)
         async with aiofiles.open(db_path, "ab") as f:
             await f.write(b"\n".join(lines) + b"\n")
+        _logger.debug(
+            "Flushed %d change(s) to %s", len(changes_to_write), db_path
+        )
         return True
     except OSError:
         _logger.exception("Failed to flush database changes")

paskia/db/operations.py

@@ -7,6 +7,7 @@ Write operations: Functions that validate and commit, or raise ValueError.
 """
 
 import hashlib
+import logging
 import os
 import secrets
 from collections import deque
@@ -18,6 +19,8 @@ from uuid import UUID
 
 import msgspec
 
+_logger = logging.getLogger(__name__)
+
 from paskia.db.jsonl import (
     DB_PATH_DEFAULT,
     _ChangeRecord,
@@ -98,6 +101,11 @@ class DB:
                 create_change_record(self._current_actor, diff)
             )
             self._previous_builtins = current
+            _logger.debug(
+                "Queued change by %s, %d pending",
+                self._current_actor,
+                len(self._pending_changes),
+            )
 
     @contextmanager
     def transaction(self, actor: str = "system"):