feat: Initial v0.9 release with API Key authentication

## v0.9.20260325_144654

### Features
- API Key Authentication System
- Job Worker System
- V2 Backup Versioning

### Bug Fixes
- get_processor_results_by_job column mapping

Co-authored-by: OpenCode

src/core/mod.rs

@@ -1,4 +1,7 @@
+pub mod api_key;
+pub mod cache;
 pub mod chunk;
+pub mod config;
 pub mod db;
 pub mod embedding;
 pub mod overlay;