feat: move driver controls to channels

[tariknz]

Description

Phase 4 follow-up to docs/ARCHITECTURE_REVIEW.md.

Moves the Input and Tachometer widgets off the legacy renderer-wide telemetry firehose and onto a typed, demand-driven driver-controls.snapshot channel. The main-process processor projects the minimum full-precision input and engine values required by those widgets, publishes only changed state, and is active only while a renderer subscribes.

The runtime is wired through both live/tape and mock sources. Input requests the channel at up to 60 Hz, while Tachometer uses its driver-focused rate. Shift-light thresholds are sourced from session data instead of the previous invalid telemetry-key casts. Storybook fixtures and the curated replay validator now seed and validate the new snapshot.

The implementation plan now records the four remaining Phase 4 slices: this driver-controls migration, positional/warning consumers, low-frequency/debug consumers, and final legacy telemetry deletion with re-profiling.

Validation:

• npm run lint -- --no-fix
• npm run test -- --no-coverage — 1,218 passed, 1 skipped
• npm run test:replay:curated — 36,000 frames, 70 session revisions, 12 probes
• git diff --check

Architecture pre-PR checklist:

• N1 — no new synchronous filesystem access
• N2 — no frontend imports from src/app
• N3 — no cross-widget imports
• N4 — no new IPC handlers
• R2.1/R2.2 — full precision retained for driver inputs
• R3.1 — no new renderer session-derived store
• R4.1 — existing typed channel bridge used
• R6.1 — no storage changes
• R7.1 — widget runtime metadata updated without registry god-file changes
• R8.1 — no settings shape changes
• R10.1 — no native changes
• R11.1 — no direct console logging
• R13.1 — processor and publication paths are performance-instrumented
• R14.1 — processor/runtime tests and curated replay coverage added
• Storybook snapshots updated for both affected widgets

Screenshots

No visual changes expected; Input and Tachometer retain their existing presentation.

Before

Input and Tachometer subscribed to the legacy renderer-wide telemetry store.

After

Input and Tachometer consume driver-controls.snapshot; renderers containing only migrated widgets no longer require legacy telemetry.

Type of Change

• New feature (non-breaking change which adds functionality)
• Bug fix (non-breaking change which fixes an issue)
• Performance improvement
• Refactoring (no functional changes)
• Documentation update
• Dependency update

Checklist

• I have discussed this change in the discord server
• I have tested this in iRacing (either in an online session or with AI)
• All tests pass locally via npm test
• I have added tests that prove my fix is effective or that my feature works
• I have run npm run lint and fixed any issues
• I have performed a self-review of my own code
• I have added/updated Storybook stories for visual changes
• I have updated the README.md (if applicable)
• I have updated defaultDashboard.ts if introducing new widgets or configurations (if applicable)

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Review details

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Configuration used: defaults

Review profile: CHILL

Plan: Pro Plus

Run ID: e0453ae3-8f92-4915-9e56-a89d295c2364

📥 Commits

Reviewing files that changed from the base of the PR and between e69c9ae and 0fcafd2.

📒 Files selected for processing (25)

• docs/IMPLEMENTATION_PLAN.md
• src/app/bridge/iracingSdk/iracingSdkBridge.ts
• src/app/bridge/iracingSdk/mock-data/mockSdkBridge.ts
• src/app/processors/DriverControlsProcessor.spec.ts
• src/app/processors/DriverControlsProcessor.ts
• src/app/processors/driverControlsRuntime.spec.ts
• src/app/processors/driverControlsRuntime.ts
• src/frontend/components/Input/Input.stories.tsx
• src/frontend/components/Input/hooks/useInputs.tsx
• src/frontend/components/Input/widgetRuntimeDefinition.ts
• src/frontend/components/RendererDataProviders/RendererDataProviders.spec.tsx
• src/frontend/components/Tachometer/Tachometer.stories.tsx
• src/frontend/components/Tachometer/hooks/useCarTachometerData.spec.tsx
• src/frontend/components/Tachometer/hooks/useCarTachometerData.tsx
• src/frontend/components/Tachometer/hooks/useCustomShiftPoints.spec.tsx
• src/frontend/components/Tachometer/hooks/useCustomShiftPoints.tsx
• src/frontend/components/Tachometer/hooks/useTachometerData.tsx
• src/frontend/components/Tachometer/widgetRuntimeDefinition.ts
• src/frontend/context/ChannelStore/index.ts
• src/frontend/context/ChannelStore/useDriverControlsSnapshot.ts
• src/frontend/widgetRuntime.spec.tsx
• src/types/channels/channel.ts
• test-data/telemetry/ai-race-10min.golden.json
• tools/telemetry-replay/driver-controls-probe.ts
• tools/telemetry-replay/run-curated-validation.ts

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