seo-mobile

# seo-mobile (M7b) Google indexes mobile-first: the mobile rendering of a page is the canonical one for ranking. This module checks that a page is usable on a small viewport. Layout problems that hurt mobile usability often surface as CLS — cross-check `references/cwv-thresholds.md`. ## Inputs Work from the PageSnapshot named in your dispatch envelope: read `parsed` from `<run_dir>/pages/<slug>.json` (`metas[]` for the viewport tag) and `parsed_rendered` when `render.used` is not `none` (layout/geometry checks need it); Grep `pages/<slug>.html` for verbatim evidence; site artifacts live in `<run_dir>/site/{robots.json,sitemaps.json,discovery.json}`. Deterministic findings already emitted by `audit.mjs` are listed in `<run_dir>/findings.deterministic.json` — do not re-emit those ids; add model-judged findings only. If invoked directly with a URL/path and no snapshot exists, first run `node "${CLAUDE_PLUGIN_ROOT}/scripts/snapshot.mjs" <target> --out "${CLAUDE_PLUGIN_DATA}/runs"` and use the printed snapshot path. ## Audits Working from the PageSnapshot (`parsed_rendered` when `render.used` is not `none`, else `parsed`): 1. **Viewport meta**: a `<meta name="viewport">` exists with `width=device-width` and `initial-scale=1`. Flag missing, fixed-width (`width=1024`), or zoom-blocking (`user-scalable=no`, `maximum-scale=1`) values — the last also harms accessibility. 2. **No horizontal scroll**: detect fixed-width containers / large absolute widths that force the viewport wider ...