[shaal]

In shared mode the best brain the shared pool holds for your track drives
a ghost car next to yours, simulated in the page from its weights: the
fastest verified brain the last pull brought, else the pool's best that
learned on this track. Nothing new is fetched or stored.

• cloud/ghost.js: an AI car of car.js from the start pose, with your
  physics and the champion's profile, sensing every frame (a car.js flag),
  so it drives the lap the service verified; it restarts with your cars
  and after a crash, and a new champion waits for its next start.
• main.js steps it with your cars while the AI trains and draws it
  translucent (flat and tilted views); the 3D studio places it.
• The Memory panel's "Race the cloud champion" toggle (one label,
  aria-pressed), kept while champions come and go.
• The WebKit browser test counts the loads a declined shared link cuts
  (a reload mid-boot; also on main) instead of failing.

Confidence

Verbatim from /ship's Phase 2 confidence gate — per-axis score (0–25), the
evidence used, and the self-critique. Treat anything below 20 as a known soft
spot to verify before relying on it.

Requirements Fit: 24/25

• Evidence:
  • The champion for your track (the board's fastest held brain, else the pool's best on this track) drives a ghost next to your car, simulated locally from its weights; no trajectory is stored.
  • Browser stage 6 shows it driving the verified lap (frame 998) in both browsers.
• To honestly score 25 I would need to: race a verified champion whose weights the pull did not bring (that needs a new route).
• Self-critique: pressing the toggle starts the ghost from the start line at once, not level with your car mid-lap.

Functional Robustness: 23/25

• Evidence:
  • The review's 2 bugs and 3 gaps are fixed: track-bound champion, stale wait cleared, respawn, no phase-3 ghost, the choice kept across contexts.
  • The toggle keeps one label, and the tilted view draws the ghost translucent.
• To honestly score 25 I would need to: line the ghost up with your car's own respawn, and test the 3D studio placement.
• Self-critique: a champion verified at other physics drives a different race than its listed lap (documented).

Verification Evidence: 24/25

• Evidence:
  • Node: 26 client tests. The ghost reproduces the traced balanced, careful and calm runs of the evolved brain with the game's car.js and a stride of 4.
  • Browser: Chromium and WebKit assert that main.js steps, draws and restarts the ghost.
  • 7 of 8 mutants are killed; the survivor is equivalent.
  • Learning 147 plus its browser test and the demonstration test pass.
• To honestly score 25 I would need to: cover the 3D studio path in a test.
• Self-critique: the tilted-view drawing is not asserted.

System Safety & Integration: 24/25

• Evidence:
  • Shared mode only; local mode creates nothing.
  • The car.js flag is inert unless set, and only the ghost sets it.
  • No service or wire change; the full app suites pass.
• To honestly score 25 I would need to: run a manual check on a phone (touch target size is styled).
• Self-critique: demoPresentation.drawDriver now honours pose.alpha, a small shared change.

Total: 95/100. Gate (≥95 AND no axis <15): PASS

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Plan: Advanced

Run ID: da1955e9-5038-4128-a6c4-d91ce0ebaa0f

📥 Commits

Reviewing files that changed from the base of the PR and between 184c5f9 and d137378.

📒 Files selected for processing (11)

• AI-Car-Racer/car.js
• AI-Car-Racer/cloud/ghost.js
• AI-Car-Racer/cloud/session.js
• AI-Car-Racer/cloud/ui.js
• AI-Car-Racer/demoPresentation.js
• AI-Car-Racer/graphics/studio.js
• AI-Car-Racer/main.js
• docs/plan/cloud-brain.md
• docs/validation/cloud-brain.md
• tests/cloud-brain-browser.mjs
• tests/cloud-brain-client.test.mjs

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