Add admin AI models panel (list, test, select Mistral models)

Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>

artifacts/flask-api/database.py

@@ -114,6 +114,7 @@ def init_db() -> None:
             )
         """)
         cur.execute("CREATE INDEX IF NOT EXISTS idx_ip_abuse_expires ON ip_abuse(expires_at)")
+        cur.execute("CREATE TABLE IF NOT EXISTS settings (key TEXT PRIMARY KEY, value TEXT NOT NULL)")
     logger.info("Base de données initialisée.")
 
 
@@ -575,3 +576,25 @@ def delete_consultation(consultation_id: int) -> bool:
         cur.execute("DELETE FROM synthesis WHERE consultation_id = %s", (consultation_id,))
         cur.execute("DELETE FROM consultations WHERE id = %s RETURNING id", (consultation_id,))
         return cur.fetchone() is not None
+
+
+# ─── Réglages (clé/valeur) ────────────────────────────────────────────────────
+
+def get_setting(key: str) -> str | None:
+    with db_cursor() as cur:
+        cur.execute("SELECT value FROM settings WHERE key = %s", (key,))
+        row = cur.fetchone()
+    return row["value"] if row else None
+
+
+def set_setting(key: str, value: str | None) -> None:
+    """value=None → supprime le réglage (retour à la valeur d'environnement)."""
+    with db_cursor() as cur:
+        if value is None:
+            cur.execute("DELETE FROM settings WHERE key = %s", (key,))
+        else:
+            cur.execute(
+                "INSERT INTO settings (key, value) VALUES (%s, %s) "
+                "ON CONFLICT (key) DO UPDATE SET value = EXCLUDED.value",
+                (key, value),
+            )