[damarals]

Summary

• TDD'd lib/deck-pointer.ts — reconstructPlaylistUrl (DZ → canonical Deezer URL; other providers → null) and deckMatchesPointer (matches by parsed Deezer playlist id, robust to legacy/foreign sourceUrls)
• lib/import-session.ts — module-level Set of declined pointers; cleared on app relaunch per AC's "during the session"
• app/import.tsx — prompt screen: fetches playlist metadata via extractFromDeezerUrl, shows playlist name + track count, primary "Import this deck" → /resolving?url=... (reuses YearResolver + Cache + RateLimiter + DeckGenerator with Resolving screen #4 pipeline), outline "Not now" → markDeclined then /
• app/playback.tsx end-of-round logic branches on parsed code: extended+unknown → prompt; extended+known → /scan; extended+declined → /scan; legacy bare ISRC → /scan. Import never auto-runs without explicit user tap. Anti-spoiler discipline preserved (existence-only Library check, no track strings)
• Closes Scan-to-import unknown deck flow #13 — implements PRD User Story 30

Test plan

• npm test — 140 pass (9 new for deck-pointer)
• npm run typecheck clean
• npm run lint clean
• Manual: scan a friend's card whose deck is unknown locally; play; on end, prompt appears with deck name + count; Import builds and routes to Review; "Not now" silences prompt for the same card during the session