Implement the complete Service House website from the approved BRIEF.md and RUNTIME.md, using fixture.json and selectors.json. The product requirements are already decided: make an implementation plan, then build and verify the application; do not stop after planning or repeat a requirements interview. Use the workflow configured in this repository and preserve its required independent reviews. Implement with vanilla HTML, CSS and JavaScript modules. A controller-owned local server serves public/ and /fixture.json at the URL in BENCHMARK-RUNTIME.json; do not start another server or change the infrastructure, fixtures or requirements. Work incrementally with small edits: keep every tool request below 4096 UTF-8 bytes, and never delete a working file before its replacement is safely written. Respect all normal host permissions; report unexpected permission-transport failures rather than bypassing them. Use only headless browser verification; Playwright is pinned in package.json and can be installed with npm ci --offline if needed. Do not read other workspaces, previous sessions/results, coordinating transcripts, graders or reference implementations. Do not install agent workflows or publish remotely. When all work and required reviews are finished, run node BENCHMARK-SUBMIT.mjs once and then stop. If blocked, report the actual blocker without submitting a ready marker. Do not ask product follow-up questions; make reasonable implementation decisions within the approved specification.