The tyre deg panel expanded by default during races and rendered a
placeholder row per driver until enough clean laps existed to fit a
degradation model. For the first third of a race that was ~525px of
'warming up' rows above the Timing Tower, pushing the tower — the thing
the page exists for — off the fold entirely.
The panel now opens when it has something to say rather than because the
session is a race, and says 'collecting clean laps' while it waits. A
reader who toggles it keeps their choice.
Also:
- Hoist degradationModel into a memo shared by the readiness check and the
rows. It is O(laps) per driver and previously re-ran on every render at
feed rate.
- Order the side rail most-synthesized to most-raw, so a reader arriving
mid-session gets 'what just happened' before the regulatory log.
- Fade the trailing edge of the nav below 560px. It scrolls with a hidden
scrollbar, so the cut-off item read as a clipping bug rather than as
scrollable.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Parse and expose SessionStatus from the official live feed, treating Started/Resumed as active and terminal or missing statuses as inactive archive candidates.
Keep /api/v1/live/state and SSE snapshot data reserved for active sessions while exposing memory-only last_snapshot, last_positions, and last_snapshot_at for the explicit Live tab archive view.
Subscribe to TeamRadio on the F1 live feed, parse defensive capture snapshots and patches, and relay capped captures through live snapshots with the SessionInfo static path. Add the frontend CDN URL helper and ticker using one shared audio element.
Subscribe to SignalR Position.z and CarData.z, decode DEFLATE payloads, stream throttled positions over SSE, and render live car dots against cached track outline bounds with tap telemetry.
Alignment spike: no checked-in or locally cached real Position.z samples were available in this isolated worktree; verified both streams expose the official raw F1 X/Y/Z coordinate contract and implemented shared-bounds normalization against prefetched OpenF1 outlines. Fallback build-outline-from-stream was not taken.
Playwright remains out of scope for live rendering because BOXBOX_DISABLE_LIVE is used there; coverage is via parser, web handler/SSE, pure transform, and seeded component tests.
- Track status flag banner (green/yellow/SC/VSC/red, defensive mapping)
- Weather strip: air/track temp, humidity, wind with compass, rain badge
- Gap trend sparklines from a per-driver interval ring buffer
- Battle detection: consecutive cars within 1.0s chained and highlighted
- Stint history column with compound sequence per driver
- Pinnable drivers (max 3) with focus cards, persisted to localStorage
Pure logic lives in lib/gapHistory.ts and lib/battles.ts with unit
tests; 137 frontend tests passing.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
