feat: publication IA (magazine/brief/essay) + fixes critique

Publication IA:
- 4 templates (magazine, brief, essay, simple) avec CSS riche
- Rewrite IA (article/exercises/tutorial/reference/mixed)
- Modération avec timeout 12s + fallback safe
- Quotas publish_enhance par tier (basic=2, pro=15, business=100)
- Détection contenu stale (hash)
- Migration DB publishedContent/publishedTemplate/publishedSourceHash

Fixes:
- cheerio v1.2: Element -> AnyNode (domhandler), decodeEntities cast
- _isShared ajouté au type Note (champ virtuel serveur)
- callout colors PDF export: extraction fonction pure testable
- admin/published: guard note.userId null
- Cmd+S fonctionne en mode dialog (pas seulement fullPage)

i18n:
- 23 clés publish* traduites dans les 15 locales
- Extension Web Clipper: 13 locales mise à jour

Tests:
- callout-colors.test.ts (6 tests)
- note-visible-in-view.test.ts (5 tests)
- entitlements.test.ts + byok-entitlements.test.ts: mock usageLog + unstubAllEnvs
- 199/199 tests passent

Tracker: user-stories.md sync avec sprint-status.yaml

_bmad-output/implementation-artifacts/spec-cross-project-audit.md

@@ -14,7 +14,7 @@ context:
 
 ## Intent
 
-**Problem:** The Momento workspace spans multiple deployable and reference projects (memento-note, mcp-server, extension, mobile, monitoring, CI/CD, prototypes) without a consolidated security and quality audit; several P0 issues were found (open uploads, MCP auth bypass, fail-open quotas).
+**Problem:** The Memento workspace spans multiple deployable and reference projects (memento-note, mcp-server, extension, mobile, monitoring, CI/CD, prototypes) without a consolidated security and quality audit; several P0 issues were found (open uploads, MCP auth bypass, fail-open quotas).
 
 **Approach:** Deliver a prioritized cross-project audit report (bugs + improvements) and, upon approval, remediate Phase 1 P0 security items first — app uploads/auth, MCP tenant isolation, extension Store readiness — before UX/i18n/prototype parity work.