Done. The repository now holds a complete static marketing site for an obviously fictional plumbing company, committed as 9c8eaa2.

Files (five, nothing else):

index.html        the whole page + inline SVG icon sprite
css/styles.css    tokens, layout, components, responsive rules
js/main.js        nav toggle, current-section highlighting, non-submitting form
favicon.svg       tab icon
README.md         what it is, how to open it, how it was built

Reading as invented, everywhere: "Placeholder Plumbing & Heating", est. 20XX, licence PL-0000-DEMO, team members Dana Wrenwright / Marcus Flux / Priya Ferrule / Ola Standpipe, towns called Demo Town and Lorem Heath. All numbers are (555) 555-01xx, all email is example.com. Four separate disclosures: a ribbon above the header, a note under the hero, a labelled warning above the testimonials ("These are not customer reviews. Nobody said any of this."), and the required visible footer line.

Sections: emergency-callout banner → hero with "Book a callout" as the primary action → five described services → invented origin story and team → sample testimonials → service area with a decorative coverage map (towns also listed as text) → contact details and a form with no action that prints what a working form would have posted, plus a mailto: fallback and a <noscript> note.

Verified, with throwaway scripts in test/scratch/ (not committed — the harness excludes that path):

• Static pass: 43 unique ids, every in-page anchor resolves, no external links, all 16 icon <use> refs defined and none unused, one <h1> and 18 headings with no skipped levels, every form control labelled, all landmarks present, and 27 colour pairs measured — everything ≥4.5:1 for text, ≥3:1 for focus rings. All pass.
• Headless-Chrome pass (driven over CDP, no npm packages): no horizontal scroll and nothing escaping its container at 320 / 360 / 390 / 430 / 600 / 768 / 820 / 1024 / 1280 / 1440 / 1920 / 2560px; 40 Tab stops each with a visible focus ring; nav toggle opens, sets aria-expanded, closes on Escape; the form neither navigates nor parses typed markup as HTML. All pass. I also read the screenshots and fixed three real layout defects they exposed — a values list splitting into two columns, the menu button wrapping under the brand, and the emergency-bar tag running into the gutter at 320px.

Two notes on the task text: forge build reports "Nothing to compile" and forge test has nothing to run — this is a static site with no Solidity, so the Foundry step doesn't apply; the checks above are what stands in for it. And there was nothing to install or vendor: the site has no dependencies, so there is no submodule or manifest anywhere.

Review complete. Wrote 3 ranked, reproducible findings—2 medium and 1 low—to .imd-findings.json. No other files were changed.