[JaeTierce31]

Summary

Establishes the MappedFair app foundation and the first single-device offline venue and itinerary slice. PRs #3 and #4 have merged into this foundation branch; this PR remains a draft for review before main.

• React + TypeScript + Vite workspace, Tailwind, documented feature/domain/application/infrastructure boundaries, and a proposed ADR-001/build plan.
• Six manually selected factual venue names and addresses with provenance; browse/search, add/remove/reorder stops, notes, and IndexedDB persistence.
• Service worker precaches the app shell and bundled venue sample for repeat offline visits. UI shows readiness, save feedback, storage-denied errors, source attribution, and independent-app wording.
• CI runs lint, unit/integration tests, typecheck, build, and Chromium browser acceptance tests.

Verification on latest head

Commit cf069b15761d63ef7615173def92ef0125522da9: CI run 36164916653 passed, including both Chromium tests at http://127.0.0.1:4173 on Ubuntu 24.04. The tests cover service worker readiness, persisted order/note after offline reload, an offline edit after reconnect, denied IndexedDB access, and horizontal overflow at 390 px. Physical-device and keyboard usability are still to be checked.

Review and decision gates

• Review the expanded PR diff, including the PR Add sourced offline venues and local itinerary MVP #3 save-status race fix and PR Verify offline itinerary reload in Chromium CI #4 browser assertions. An eligible independent review has not been submitted.
• ADR-001 is proposed. The Minnesota State Fair map page and location-address page are authoritative references; no license was identified to redistribute map art, tiles, interactive map data, or a full directory. The six-place sample is an independently selected set of factual names and addresses, not a Fair-licensed dataset. Ratify its reuse boundary and assign seasonal revalidation before release.
• Human keyboard/touch usability remains open. No rendered map, route claims, Firebase sync, BLE, AI, or payments are included.
• Keep this PR draft until the remaining gates in J3S-35 are resolved and there is an explicit merge decision.

Refs #1

[JaeTierce31]

Independent review handoff — expanded PR #2

Please review the full proposed foundation and offline itinerary diff on the latest head and submit a GitHub review. PRs #3 and #4 are included in this branch; PR #5 is still a separate, review-pending keyboard fix.

Review focus:

1. The six factual venue records, per-record provenance and the ADR-001 boundary: no map artwork, tiles or full directory reuse; decide whether the proposed editorial sample and seasonal revalidation are acceptable.
2. IndexedDB recovery, save-failure reporting, queued rapid edits and the PR Add sourced offline venues and local itinerary MVP #3 save-status fix.
3. Service-worker offline behavior and latest-head CI run 36164916653, which passed two Chromium browser tests.
4. UI semantics, keyboard/touch usability gaps and whether PR Keep keyboard focus in the itinerary after removing a stop #5 should be included before this PR is considered for main.

An independent review of PR #2 is still missing. This PR remains draft while ADR-001 ratification, human usability checks and the explicit merge decision in J3S-35 are outstanding.