refactor(skill): rename validate → web-validate

Clearer scoped name for the W3C + WCAG skill. Updated: folder (git mv),
frontmatter name, H1 title, command refs, CLAUDE.md routing, 6 profiles
(functional — activate the skill by folder name), cross-refs in
harden/seo/depth-matrix/client-handover, agent dispatch refs, README +
USAGE tables.

Confidentiality: the client-deliverable leak-guard regex
(client-handover-writer.md) now matches BOTH /web-validate and legacy
/validate, so older client docs stay covered.

Left intentionally: validator-analyzer agent name (lockstep with
subagent_type + registry), .validate-cache/ + VALIDATE.md (audit-file
family {SEO,GEO,HARDEN,CSO,VALIDATE}.md), .claude/ history (append-only),
CHANGELOG old entry (added a new "renamed" entry instead). NL trigger
keywords kept so "validate" still routes here. Third-party html-validate
untouched.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01W9sqAwZxBMZSynZoVrEJhd

skills/client-handover/SKILL.md

@@ -5,7 +5,7 @@ description: |
   final audits, deploy validation against live site, and a branded
   deliverable (Markdown + HTML + PDF). Multi-agent orchestrator: dispatches
   client-handover-writer which spawns parallel /seo + /harden subagents,
-  then /validate, then writes the deliverable.
+  then /web-validate, then writes the deliverable.
   Triggers: "client handover", "compte rendu client", "livraison client",
   "rapport client", "deliverable", "summary for client", "handover doc",
   "livrable", "ship and handover", "finaliser et livrer".
@@ -39,11 +39,11 @@ The agent runs a **ship-and-handover pipeline** with explicit gates:
    - If still < 17/20 after cap → escalate to user with concrete remaining issues; user decides continue / stop / manual intervention.
 4. **COMMIT + PUSH** — If files changed during fix loops, run /commit-change (atomic logical commits) then `git push`.
 5. **DEPLOY PAUSE** — List exact deploy artifacts: changed files since baseline, deploy hints from project (vercel.json, netlify.toml, Dockerfile, .github/workflows/deploy.yml, etc.), and the deploy process in plain words. Use AskUserQuestion: "Deploy done? (Yes / Not yet / Skip validate)". Block until Yes or Skip.
-6. **/validate (live site)** — Run validator-analyzer against the deployed URL. Capture `SCORE_VALIDATE`.
+6. **/web-validate (live site)** — Run validator-analyzer against the deployed URL. Capture `SCORE_VALIDATE`.
 7. **GATE — per-axis threshold ≥17/20** — Compute final `SCORE_*_AFTER` for SEO classique, GEO (IA), HARDEN, VALIDATE. If ANY < 17/20: STOP. Generate `.claude/audits/HANDOVER-ROADMAP.md` with prioritized analysis of what's blocking each below-threshold axis. Do NOT write the client deliverable. Report to user.
 8. **DOC GENERATION (only if all scores ≥17/20)** — Read `.claude/memory/` registries + full git history. Ask whether to include build/deploy chapter. Synthesize the client deliverable using the 4-chapter structure:
    - **§1 Ce qu'il fallait faire (et pourquoi)** — brief + motivation, 100–180 words.
-   - **§2 Ce qui a été fait** — lay summary, **≤300 words, zero technical jargon**, **no internal tool/skill names** (no `/seo`, `/harden`, `/validate`, `seo-analyzer`, etc. — replace with concept names: référencement / sécurité / conformité technique). Forbidden-token grep gate runs before write.
+   - **§2 Ce qui a été fait** — lay summary, **≤300 words, zero technical jargon**, **no internal tool/skill names** (no `/seo`, `/harden`, `/web-validate`, `seo-analyzer`, etc. — replace with concept names: référencement / sécurité / conformité technique). Forbidden-token grep gate runs before write.
    - **§3 Ce qui vous reste à faire** — action-only checklist grouped by cadence (one-time / monthly / quarterly / yearly / when something changes).
    - **§4 Détails techniques (pour les curieux)** — score table (SEO classique + GEO + sécurité + conformité, before/after, gated independently at ≥17/20), vulgarized BDR decisions, phases with technical detail, optional glossary.
    - **§5 Annexe — plateformes externes** (web/local-business only).