Phases 10-13 for v1.1 Multi-Library Support: - Phase 10: Schema & Migration (libraries table, library_id FK, phantom columns) - Phase 11: Per-Library Scan Pipeline (sequential coordination, per-library progress) - Phase 12: Library CRUD & Data Integrity (add/rename/remove, orphan cleanup, FTS5) - Phase 13: Library Views & Phantom Tracks (unified views, filtering, phantom display)