refactor: collapse Config proxy, migrate tracker to SQLite, split reconcile module

- Config: remove _ConfigAccessor and ConfigManager; use __getattr__ for lazy
  loading on single _Config class; re-register self as _instance in __getattr__
  so reset() always clears the correct object (item 1)
- upload_tracker: replace hand-rolled JSON store with sqlite3; auto-migrates
  existing JSON on first run; remove dead record_frigate_file function;
  connection re-opens when CACHE_DIR changes for test isolation (items 2, 8)
- diversity: move ThreadPoolExecutor import to module level; inject optional
  fetch_fn parameter for testability (items 3, 6)
- pyproject: consolidate 4 variant files into extras (gpu/rocm/intel/cpu);
  update Dockerfile to use --extra flag; delete variant pyproject/lock files;
  uv.lock needs regen with `uv lock` after this change (item 4)
- jobs: extract _build_job helper to separate business logic from terminal I/O;
  auto_configure delegates dedup/selection to _build_job (item 5)
- logging: convert f-string log calls to % interpolation throughout all winnow/
  modules (item 7)
- reconcile: new module with reconcile_frigate_mappings and
  enrich_asset_with_face_data extracted from executor.py (item 9)
- scheduler: print next scheduled run time after startup and after each run;
  fix f-string logger.error call (item 10)

winnow/cache.py

@@ -85,7 +85,7 @@ class EmbeddingCache:
         try:
             np.save(self._path(asset_id, model), embedding)
         except Exception as e:
-            logger.debug(f"Cache write failed for {asset_id}: {e}")
+            logger.debug("Cache write failed for %s: %s", asset_id, e)
 
     def clear(self) -> None:
         """Delete all cached embeddings."""
@@ -96,7 +96,7 @@ class EmbeddingCache:
             if f.endswith(".npy"):
                 os.remove(os.path.join(self.cache_dir, f))
                 count += 1
-        logger.info(f"Cleared {count} cached embeddings.")
+        logger.info("Cleared %s cached embeddings.", count)
 
 
 # Singleton instance