Claude 3560dcb802 feat(db): introduce SQLite (better-sqlite3) backing store ...

First step of the folder/video refactor. Adds an app-local SQLite DB at
data/app.db with schema for nested folders (max 2 levels enforced in
code, not SQL) and user-editable globally-unique video IDs.

- src/db.ts: open + WAL + schema (folders, videos) + partial unique
  index for top-level folder names (NULL parent_id case)
- One-shot disk-tree migration: on first start scans data/folders/*
  and seeds folder rows; reads each {videoId}/meta.json to seed video
  rows. Skips invalid/missing meta gracefully.
- Wired into app.ts startup before routes mount.
- gitignore: data/app.db* (DB + WAL/journal sidecars).

Schema only — no routes or store.ts changes yet. Next step swaps the
file-based store calls to DB-backed equivalents.

Smoke-tested on the current data dir: 3 folders migrated, 0 videos
(folders were empty). Build (npx tsc) passes.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

2026-05-31 23:18:51 +09:00

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