Add optional user_id field to the progress collection. When a user is
authenticated, progress is keyed by user_id instead of session_id, making
it portable across devices and browsers. Anonymous reading still works via
session_id as before.
On login or registration, any progress accumulated under the anonymous
session is merged into the user's account (most-recent timestamp wins),
so chapters read before logging in are not lost.
- scripts/pb-init.sh: add user_id field to progress collection schema
- scraper/internal/storage/pocketbase.go: add user_id to EnsureCollections
- ui/src/lib/server/pocketbase.ts: Progress interface gains user_id;
getProgress/allProgress/setProgress accept optional userId and query/write
by user_id when present; add mergeSessionProgress() helper
- ui/src/routes/login/+page.server.ts: call mergeSessionProgress after
successful login and registration (fire-and-forget, non-fatal)
- ui/src/routes/api/progress/+server.ts: pass locals.user?.id to setProgress
- ui/src/routes/books/+page.server.ts: pass locals.user?.id to allProgress
- ui/src/routes/books/[slug]/+page.server.ts: pass locals.user?.id to getProgress
Introduces a logger.ts module emitting slog-compatible JSON lines to stderr.
Replaces silent catch blocks and console.error calls throughout minio.ts,
pocketbase.ts, hooks.server.ts, login, books, browse, and all API routes so
auth/registration failures, MinIO presign errors, and scraper proxy failures
are now visible in container logs.
