Added the 1200×630 og.png, all six metadata tags, and matching dist/ export. CSS, scripts, favicon and game logic remain unchanged.

Local HTTP and interaction checks passed. The design probe passed 11/16 checks; existing layout and typography limitations are documented in DESIGN.md.

I found nothing high for this metadata-only revision: everything the brief asked for is in place, and two findings are written to .imd-findings.json (one medium, one low).

Area	Count
Brief requirements	10: 9 met, 1 partly missed, 0 faked
Broken features	0
Product on first screen at 390	yes (the wheel). The "place a call" slip is below the fold, but the brief forbids CSS changes
taste@1 checks passed	11 / 16
Copy findings	1 (README)
Share card	present: title, favicon, og:title, og:image, og:type, twitter:card, theme-color

Requirements

• "Create og.png (1200x630) in the repo root": met. og.png is a 1200×630 PNG with no transparent pixels.
• "dark navy #10131c background": met. Pixel (0,0) is rgb(16,19,28).
• "'WHEEL CALL' in amber #f2b33d in a dot-matrix style": met. Pixel (80,195) is rgb(242,179,61). The W glyphs are badly drawn (finding 2, low).
• "Call the Squeekchain hamster's next round. Beat the Oracle." in light text: met.
• og:title "Wheel Call": met (index.html:9).
• og:description: met (index.html:10).
• og:image https://wheel-call-ab9f.imd.site/og.png: met (index.html:11).
• og:type website, twitter:card summary_large_image, theme-color #10131c: met (index.html:12-14).
• "Do not change anything else: no CSS, no script, no game logic": partly missed. The only change to index.html is the six added meta tags, but README.md also gained a job log (finding 1). dist/ and DESIGN.md were added too; I'm treating those as the builder's export convention, not a finding.
• "keep index.html, favicon.svg and README.md at the root": met.
• Acceptance "GET / 200, title Wheel Call, /og.png 200 image/png": met when served locally from the repo root: / returned 200 text/html with title "Wheel Call", and /og.png returned 200 image/png. Checking the live hosted site is after review.

The idea: Wheel Call is a game where you bet on a hamster's next on-chain round, styled like a race-track tote board. The amber dot-matrix lettering carries that idea, and the share card reuses it.

Findings

1. Medium, fidelity: README.md:44-46 is a build log. It holds this job's validation results and probe scores ("The pinned design probe passed 11/16 checks…"). That goes against "Add social share metadata only / Do not change anything else". Fix: delete lines 44-46.
2. Low, taste: the W in og.png is malformed. Its middle stroke uses three dot sizes and has a pointed spike, and some dots in the W and A overlap. Every other letter is a clean, regular grid. Fix: redraw the W glyphs (and the A crossbar) on the same grid as the E and L.

Probe failures I'm not reporting: casing, tracking, kicker labels, type sizes (12 counting one-offs, against a bar of 8) and weights (5 against 3). All of these come from CSS that was already there, and the brief says "no CSS", so its words win.

Limits of this review

• WebKit would not start on this machine because system libraries are missing, so I checked in Chromium only. The game code is unchanged, so this revision carries little WebKit risk.
• The probe's screenshots in test/scratch/ have been removed, and I changed no repository files apart from .imd-findings.json.