Local Review Packet: Issue #9 / PR #32

Reviewer harness: Codex Implementer harness: Codex Result: PASS WITH CAVEATS Generated: 2026-07-03

Scope Reviewed

PR #32 implements issue #9: web live track map on /live, with SignalR Position/CarData ingestion, a throttled positions SSE event, cached track outline bounds, SVG car dots, and tap telemetry.

Local Gates

PASS: go test ./internal/live ./internal/web
PASS: npm run test in frontend/ (22 files, 182 tests)
PASS: npm run build in frontend/ (tsc --noEmit && vite build)
PASS: npm run test:e2e (26/26)
CAVEAT: npm run test:visual passed 11/12; failed existing mobile Data Library snapshot due page-height/image diff. Not specific to the live track-map surface.

Acceptance Criteria Review

PASS: /live renders a track map with outline and team-colored car dots in a mocked live session.
CAVEAT: real live-session overlay alignment remains unverifiable offline; this still needs first-session verification against actual Position.z data.
PASS: selecting a car shows telemetry: speed, throttle, brake, DRS, gear.
PASS: off-track/stopped cars are visually distinguished in the mocked track-map screenshot.
PASS: graceful no-live-session state captured on desktop and mobile.
PASS: source check shows /api/v1/track-outline uses cached/local outline data; live path does not add direct OpenF1 calls during active session.

Visual Artifacts

Open the local gallery:

open /Users/aman/HomeBase/Projects/Personal/box-box/.review/issue-9-pr-32/index.html

Screenshots:

/Users/aman/HomeBase/Projects/Personal/box-box/.review/issue-9-pr-32/screenshots/live-track-map-desktop.png
/Users/aman/HomeBase/Projects/Personal/box-box/.review/issue-9-pr-32/screenshots/live-track-map-mobile.png
/Users/aman/HomeBase/Projects/Personal/box-box/.review/issue-9-pr-32/screenshots/live-empty-desktop.png
/Users/aman/HomeBase/Projects/Personal/box-box/.review/issue-9-pr-32/screenshots/live-empty-mobile.png

Visual diff artifact:

/Users/aman/HomeBase/Projects/Personal/box-box/.review/issue-9-pr-32/artifacts/visual-diff/data-library-diff.png

Notes

The ticket-specific visual capture used mocked /api/v1/live/state, /api/v1/live/stream, and /api/v1/track-outline responses. The screenshot verifies the frontend behavior and shape contract, but not actual F1 coordinate alignment.

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