Hotfix: Fetch fallback snapshot from GitHub raw and add short in-memory cache

[badjoke-lab]

Motivation

• Avoid Vercel’s "Deploying outputs…" internal error caused by bundling/reading the large local snapshot file while preserving the JSON fallback path for map data.
• Keep the limited/fallback contract intact so the API still signals unavailable explicitly instead of silently returning an empty list.

Description

• Replace local fs snapshot read with fetch from https://raw.githubusercontent.com/badjoke-lab/cryptopaymap-v2/main/data/fallback/published_places_snapshot.json in lib/places/listPlacesForMap.ts and remove the previous filesystem dependency.
• Add a short in-memory snapshot cache with a TTL of 45_000 ms to reduce requests to raw.githubusercontent.com and return the cached snapshot while valid.
• Preserve error behavior by throwing FALLBACK_SNAPSHOT_UNAVAILABLE when the fetch or parse fails so the route continues to return an explicit unavailable response.
• Send Accept: "application/json" and include next: { revalidate: 45 } on the fetch to align with runtime caching intent.

Testing

• Ran npm run build and the Next.js production build completed successfully, including compilation, type checking, and static page generation.

---

Codex Task

[vercel]

The latest updates on your projects. Learn more about Vercel for GitHub.

Project	Deployment	Actions	Updated (UTC)
cryptopaymap-v2	Error		Mar 2, 2026 10:47am