feat: analysis hall + on-track HUD + no-fake-fallback sweep + docs

[mlnomadpy]

Summary

Big sprint bundle. Three top-level themes:

1. Analysis Hall + On-Track HUD — two flagship surfaces rebuilt from scratch around real data.
2. No-fake-fallback sweep — deep audit + removal of hardcoded/templated data across pages and stores. Real bridge endpoints or honest "DATA UNAVAILABLE" — nothing in between.
3. Bridge endpoints + Termux fixes — 5 new routes, parquet exports work on SQLite (Termux), pyarrow shim, full docs refresh.

PWA — Analysis Hall (new tabbed UI)

• pages/analysis-hub/AnalysisHub.vue rewritten as 6-tab UI (Overview/Telemetry/Systems/IMU/Signals/Modules) under pages/analysis-hub/tabs/
• DuckDB-wasm + Leaflet + Chart.js (lazy-loaded, worker bundled same-origin — fixes the jsdelivr CORS error)
• analysisStore (Pinia) with sessionId/laps/selectedLapIndex/filterOutliers/activeTab + lapFilterSql getter
• shared/lib/telemetry/outliers.ts (SANITY_RANGES + clipOutliers) and shared/lib/telemetry/queries.ts (decimation + signal helpers)
• New shared/ui/charts/CyberLineChart.vue wrapper
• Sonoma centerline + raw GPS + virtual path mapped from distance_m (mirrors the standalone HTML viewer)

PWA — On-Track HUD (cockpit-minimal redesign)

• Critical bug fix: reactive sid via computed (explicit > replay source > /health active_session_id) + watcher. Previously const sid = activeSessionId ?? '' was captured statically and the SSE was opened with empty sid → REPLAY ACTIVE pill showed but no frames flowed.
• useLapDerivation composable derives lap_number from cumulative distance / track_length_m (bridge doesn't emit lap_number)
• New AgentTraceDrawer (T key, polls /coach/traces only while open — battery-aware on Pixel 10)
• New CoachVoiceButton FAB (M key) + Shift+D debug overlay
• New HudCornerTile widget; Pixel 10 landscape (2424×1080)
• WAITING-FOR-DATA overlay with one-click START REPLAY
• Empty-state policy: tiles hidden until firstFrameAt is set (no — scrambled grid)

PWA — 8 pages newly tabbed

Settings, CarSetup, Calibration, HardwareDetail, PitStall, QuestLog, EndOfDay, PreBrief, LivePitWall (via CyberTabs)

Bridge — new endpoints

• GET /session/<sid>/laps — GPS+distance+stint lap detection
• GET /coach/traces?session_id=&limit=&since_ts= — agent_traces table polling
• GET /leaderboard?track=&limit= — best-lap aggregation
• GET /cars — data/cars/*.yaml scan + currently-loaded flag
• GET /session/<sid>/export.parquet: SQLite path via streaming pyarrow batches; telemetry_signals + signal_registry now include session_id column (fixes DuckDB-wasm binder errors in Analysis Hall queries)

No-fake-fallback sweep

Stores: medalStore honest empty state; telemetryStore.startSimulation() Math.sin/cos fakes removed; litert_coach._templated_pre_brief dropped; /coach/brief response exposes error from llm_friction row.

Pages wired to real endpoints: CarSetup→/cars, TrackAtlas→/track/{markers,danger_zones,elevation,weather}, LapTimesHall type-drift fix, StageClear→/session/<sid>/scorecard + /coach/debrief, DriverEvolution drops fake median, TrainerCard→/driver/<id>/profile, PreBrief preflight bound to /health, LiveCarState coaches from /coach/agents + /capabilities, GarageHub counts from real stores.

Removed: SponsorContractsBody hardcoded sponsors, OnboardingFlow default car, CoachCodexMode fake emotion, ModulesTab literal tile counts, HardwareDetail hardcoded modal fields, OnTrackHud session.totalLaps reference.

Docs (refreshed/rewritten)

README.md, docs/api.md, docs/architecture.md, docs/stack.md, docs/hardware.md, data/README.md, docs/pitwall-web-design.md, docs/ux.md, docs/coaching-engine.md, docs/adk-agent-architecture.md, docs/litert_termux_validation.md, deploy/phone/README.md. NEW: docs/analysis-hall.md, docs/on-track-hud.md.

Tests

• tests/features/coaching/test_coach_traces.py (5/5)
• tests/features/test_api_cars.py (2/2)
• tests/features/test_api_leaderboard.py (3/3)
• src/pwa/tests/{analysisStore,outliers}.test.ts (11/11)
• cd src/pwa && npm run build → 125 entries, 3700 KiB, 0 errors

Test plan

• Open /garage/analysis — session picker populated, no DuckDB worker errors in console
• Pick a session — Overview tab shows real Sonoma map (centerline + raw GPS + virtual path), summary stats from real DB
• Cycle laps via ←/→, toggle outliers with O, switch tabs 1–6
• Open /hud — WAITING overlay appears (3s grace), click START REPLAY, picker starts replay, REPLAY ACTIVE pill, telemetry flows, lap number derives from distance, GPS dot traces minimap
• Press T — AgentTraceDrawer opens (will show "AGENT TRACE UNAVAILABLE — google-adk not installed" until ADK is installed on phone)
• Press M — voice FAB activates (Web Speech API; /coach/ask returns 503 until ADK is installed)
• Press Shift+D — debug overlay shows live sid/frames/age/lap