P0: PRAGMA synchronous=NORMAL, busy_timeout=30s, cache=-80MB, mmap=256MB

add telegram_file_unique_id, quality, progress columns

Fix: remove orphaned fi

Fix: remove orphaned else/fi from partial replacement, add migration

Fix: run schema creation unconditionally, fix table-not-found error

feat: integrate search engine v2 (1024-dim + BM25 hybrid) with /search endpoint

DB v2: auto-schema, views, WAL mode, health endpoint

Update mount path to /data

Simplify: use bucket volume directly, remove Litestream

Setup SQLite + Litestream with S3 bucket backup

initial commit