feat: update core API, database layer, and worker modules

- Remove unused imports (n8n_search, universal_search, Client, Arc, etc.)
- Update API endpoints for identity, face recognition, search
- Fix postgres_db.rs search_videos parent_uuid column
- Add snapshot API and identity agent API
- Clean up backup files (.bak, .bak2)

src/core/chunk/mod.rs

@@ -3,7 +3,7 @@ pub mod rule3_ingest;
 pub mod splitter;
 pub mod types;
 
-pub use rule1_ingest::ingest_rule1;
+pub use rule1_ingest::execute_rule1;
 pub use rule3_ingest::ingest_rule3;
 pub use splitter::{AsrSegment, ChunkSplitter};
 pub use types::{Chunk, ChunkType};