feat: brain-engine + brain-ui + docs — template full stack standalone

- brain-engine: server, embed, search, RAG, MCP, start.sh (standalone)
- brain-ui: source React complète, build.sh, DocsView avec tier colors
- docs: 14 pages guides humains (getting-started, architecture, sessions, workflows, agents, vues tier)
- brain-compose.yml v0.9.0: tier featured ajouté, sessions/agents par tier, coach_level, API key schema
- DISTRIBUTION_CHECKLIST v1.2: brain-engine + brain-ui + docs dans la checklist

docs/vue-pro.md

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+# 🟠 pro — Ce que tu as
+
+> 🟠 **40 agents + systeme. 12 sessions. Tu ship en prod.**
+
+Tu as tout ce qui est en featured, plus :
+
+---
+
+## Sessions ajoutees
+
+- `audit` — analyse lecture seule, rapport qualite/secu
+- `deploy` — deploiement prod, config VPS
+- `infra` — maintenance VPS, monitoring
+- `urgence` — incident prod, hotfix critique
+
+---
+
+## Agents ajoutes
+
+**Code & Qualite**
+
+- `code-review` — review selon 7 priorites de vigilance
+- `security` — audit OWASP, 8 priorites
+- `testing` — tests Jest/Vitest, strategie par couche DDD
+- `refacto` — restructuration en 5 etapes, 3 niveaux de risque
+- `frontend-stack` — architecture frontend, stack, libs UI
+
+**Performance — le trio**
+
+- `optimizer-backend` — perf Node.js (async, memoire, event loop)
+- `optimizer-db` — perf MySQL (N+1, index, EXPLAIN)
+- `optimizer-frontend` — perf React (re-renders, bundle, lazy loading)
+
+**Infra & Deploy**
+
+- `vps` — deploy Docker + Apache + SSL de A a Z
+- `ci-cd` — pipelines GitHub Actions / Gitea CI
+- `monitoring` — sondes Uptime Kuma, alertes, logs
+- `pm2` — process manager Node.js prod
+- `mail` — Stalwart, DNS, SMTP/IMAP
+- `migration` — TypeORM migrations safe
+
+**Documentation & Outils**
+
+- `i18n` — internationalisation, audit traductions
+- `doc` — README, API Swagger
+- `toolkit-scribe` — capture patterns valides → toolkit/
+- `git-analyst` — historique git semantique
+- `brain-compose` — gestion multi-instances
+- `config-scribe` — configuration brain
+- `audit` — diagnostic coherence brain
+
+---
+
+## Coach
+
+> 🟠 Idem featured + contexte projet. Le coach connait ta stack et tes patterns.
+
+---
+
+## Ce que tu n'as pas encore
+
+> 🟣 **full** te donne : ecriture kernel, mode pilote (copilotage long), supervision multi-phase, contenu YouTube pipeline, game design, distillation L2.
+
+→ Detail : voir la vue par tier dans la sidebar.