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The 50-page PRD HTML totals ~520KB; loading it all costs Claude ~222K tokens just for context. This adds a token-efficient sibling layer: - scripts/extract-spec.js → npm run spec:extract / spec:check Walks docs/prd/newfunction/*.html and produces stripped MD into _spec/. Strategy varies per page (full-extract for SDD/process/data, shell-strip for agents to keep long system prompts intact). Result: 327.9KB MD (~84K tokens) — 38% of full load, saves ~138K tokens for every Agent invocation that reads the spec. - scripts/git-hooks/pre-commit + scripts/install-hooks.sh Pre-commit guard: when any docs/prd/newfunction/*.html changes, the hook checks the corresponding _spec/*.md is up to date; fails commit if stale, telling user to `npm run spec:extract`. Auto-installed via package.json `prepare` script on `npm install`. - docs/prd/newfunction/_spec/ (51 .md files + CONVENTIONS.md) Machine-readable mirror of HTML. Used by: - Coder/Architect/Tester agents when reading spec at runtime - External Claude Code sessions doing reproducibility - CI checks (npm run spec:check) NOT hand-edited; regenerated from HTML by extract-spec.js. - CLAUDE.md: 1-line note directing future agents to read _spec/*.md preferentially, fall back to *.html only for wireframes/SVG/full human-readable context. This is the user's pre-existing scaffolding that the previous commits hadn't pulled in yet. Now tracked + enforced by hook. Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
