fix: statut IA — suppression endpoint redondant + lecture runtime des clés API

Problème: l'indicateur affichait 'IA non configurée' alors que les
actions AI fonctionnaient.

Causes:
1. Deux endpoints /api/ai/status en conflit (main.py + ai_routes.py)
2. ai_routes.py lisait PROVIDERS évalué à l'import (os.getenv figé)
3. Cache côté frontend (_aiStatusChecked) empêchait de re-vérifier

Fixes:
- Suppression de l'endpoint redondant dans main.py
- ai_routes.py: lecture os.getenv au runtime (pas depuis PROVIDERS)
- sync.js: _checkAIStatus() appelée à chaque ouverture du panneau

backend/ai_routes.py

@@ -19,12 +19,23 @@ router = APIRouter(prefix="/api/ai", tags=["AI"])
 
 @router.get("/status")
 async def api_status():
-    """Check if AI is configured and which providers are available."""
+    """Check if AI is configured and which providers are available.
+
+    Reads environment variables at runtime so that changes to
+    .env or Docker environment are reflected immediately.
+    """
+    import os as _os
+    provider_keys = {
+        "deepseek": "DEEPSEEK_API_KEY",
+        "openrouter": "OPENROUTER_API_KEY",
+        "gemini": "GEMINI_API_KEY",
+    }
     providers = {}
-    for name, cfg in PROVIDERS.items():
+    for name, env_var in provider_keys.items():
+        has_key = bool(_os.getenv(env_var, "").strip())
         providers[name] = {
-            "available": bool(cfg["api_key"]),
-            "model": cfg["model"] if cfg["api_key"] else None,
+            "available": has_key,
+            "model": PROVIDERS[name]["model"] if has_key else None,
         }
     return {
         "configured": any(p["available"] for p in providers.values()),

backend/main.py

@@ -2165,21 +2165,6 @@ async def api_file_restore(
         raise HTTPException(status_code=500, detail=f"Error restoring file: {str(e)}")
 
 
-@app.get("/api/ai/status")
-async def api_ai_status(current_user=Depends(require_auth)):
-    """Return the AI configuration status.
-
-    Checks whether any AI provider API key is configured.
-    Does NOT expose the key itself, only a boolean 'configured' flag.
-    """
-    providers = ["DEEPSEEK_API_KEY", "OPENROUTER_API_KEY", "GEMINI_API_KEY"]
-    configured = any(
-        os.environ.get(env_var, "").strip()
-        for env_var in providers
-    )
-    return {"configured": configured, "providers_checked": providers}
-
-
 @app.get("/api/file/{vault_name}/backlinks")
 async def api_file_backlinks(
     vault_name: str,