[DecodedXR]

What

User-directed polish (not a milestone): add a bottom-center Built with Claude Fable 5 build-attribution line — the counterpart to the top #app-title.

How

Static presentational chrome, mirroring the #app-title pattern:

• index.html — an inline #build-credit div reading "Built with Claude Fable 5".
• src/style.css — position: fixed; bottom: 12px, horizontally centered, dim --accent-dim monospace. pointer-events: none so it never intercepts orbit drags on the canvas; z-index: 5 (below the boot loader's 10) so the loader still fully covers it during boot.
• No JS. src/main.js, the render loop, OrbitControls, geometry/shader, and the M4 decoupling machinery are byte-unchanged.

Test

New smoke test (tests/smoke.spec.js) asserts:

• the string ships in the raw server HTML (not JS-injected);
• the live credit is visible, horizontally centered near the bottom (center within 40px of viewport center; bottom edge within 80px of the viewport bottom);
• the overlay does not capture pointer events over the canvas (elementFromPoint at its center returns the canvas).

Proven non-tautological: RED on the prior HTML (no #build-credit), green only with the change.

Verification

• Full local suite green — 17/17 passing when run serially (--workers=1). Note: the M4/M5/M6 webcam & photo interaction tests are timing-flaky under parallel software-WebGL contention (documented in playwright.config.js); a parallel run that also had a background agent competing for CPU produced spurious timeouts, all of which pass cleanly with no contention. This change is HTML/CSS-only and touches no JS.
• Independent adversarial verifier (read-only, blind to the implementation reasoning): verdict SOUND — confirmed pointer-events pass-through, correct z-order/boot-loader race, non-tautological test with correct bottom-placement thresholds for the 1280×720 viewport, no build/render/existing-test breakage.
• Review: inline (repo's /code-review launches a billed cloud Workflow the user didn't opt into) — no findings.
• Verified visually on a real production build: dim green "Built with Claude Fable 5" centered at the bottom, title still top-center.

Rollback

Pre-change HEAD: 94b4084.

🤖 Generated with Claude Code