feat: finalisation éditeur Forge + mode hors-ligne PWA + consolidation roadmap

- Forge: Tab indent, Ctrl+K, auto-focus, AI status, messages erreur FR
- Forge: slash commands clean, cache-bust iframe, preview serveur
- Forge: iframe 82vh, hauteur auto, table inline, sélecteur langage
- PWA hors-ligne: IndexedDB (offline-db.js + offline.js)
- Mermaid: thème dark complet, highlight.js preview
- Backend: màj CSP, rename chain, bookmarks/history/shares
- Roadmap: consolidation dans docs/ROADMAP.md (75 items)
- Infra: docker-compose.podman.yml, suppression test-vault
- .gitignore: exclusion odysseus/

backend/ai_routes.py

@@ -24,7 +24,7 @@ async def api_status():
     Reads environment variables at runtime so that changes to
     .env or Docker environment are reflected immediately.
     """
-    import os as _os
+    from backend.ai import get_ai_key
     provider_keys = {
         "deepseek": "DEEPSEEK_API_KEY",
         "openrouter": "OPENROUTER_API_KEY",
@@ -32,7 +32,7 @@ async def api_status():
     }
     providers = {}
     for name, env_var in provider_keys.items():
-        has_key = bool(_os.getenv(env_var, "").strip())
+        has_key = bool(get_ai_key(env_var))
         providers[name] = {
             "available": has_key,
             "model": PROVIDERS[name]["model"] if has_key else None,