docs: add implementation blueprints for remaining features
Break the remaining work into 9 sequential, self-contained blueprints
for AI agents. Each blueprint covers one feature (mapped to requirements),
with context, dependencies, constraints, tasks and tests, and leaves the
app building, testable and runnable.
- 01 persistence & models (SQLite store, migrations, repositories)
- 02 structured logging to SQLite
- 03 runtime configuration (env + SQLite overrides)
- 04 audio conversion core (transcoder + validator)
- 05 job pipeline (queue + scheduler + worker pool)
- 06 Lidarr integration (rescan client)
- 07 webhook trigger
- 08 library scan & manual convert
- 09 web interface
- README index with order, dependencies and shared DoD