feat(agent): v4.12.0 - refonte config 'Agent & IA', fournisseurs actifs/testes dans le panneau, contexte document + guide d'utilisation

app/db.py

@@ -737,6 +737,10 @@ def init_db():
                 model TEXT DEFAULT '',
                 api_key TEXT DEFAULT '',
                 api_base TEXT DEFAULT '',
+                verified INTEGER NOT NULL DEFAULT 0,
+                verified_model TEXT DEFAULT '',
+                verified_at TIMESTAMP,
+                last_error TEXT DEFAULT '',
                 updated_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP
             )
         """)
@@ -752,12 +756,38 @@ def init_db():
                 api_base TEXT NOT NULL DEFAULT '',
                 default_model TEXT DEFAULT '',
                 models_json TEXT NOT NULL DEFAULT '[]',
+                verified INTEGER NOT NULL DEFAULT 0,
+                verified_model TEXT DEFAULT '',
+                verified_at TIMESTAMP,
+                last_error TEXT DEFAULT '',
                 created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
                 updated_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
                 UNIQUE(user_id, provider)
             )
         """)
         conn.execute("CREATE INDEX IF NOT EXISTS idx_user_llm_keys_user ON user_llm_keys(user_id)")
+        # v4.12: provider activation/verification — a provider is only offered in
+        # the Agent UI once it is configured AND its connection test succeeded.
+        for col, ddl in (
+            ("verified", "INTEGER NOT NULL DEFAULT 0"),
+            ("verified_model", "TEXT DEFAULT ''"),
+            ("verified_at", "TIMESTAMP"),
+            ("last_error", "TEXT DEFAULT ''"),
+        ):
+            try:
+                conn.execute(f"ALTER TABLE user_llm_keys ADD COLUMN {col} {ddl}")
+            except sqlite3.OperationalError:
+                pass  # column already exists
+        for col, ddl in (
+            ("verified", "INTEGER NOT NULL DEFAULT 0"),
+            ("verified_model", "TEXT DEFAULT ''"),
+            ("verified_at", "TIMESTAMP"),
+            ("last_error", "TEXT DEFAULT ''"),
+        ):
+            try:
+                conn.execute(f"ALTER TABLE llm_config ADD COLUMN {col} {ddl}")
+            except sqlite3.OperationalError:
+                pass  # column already exists
         # Migration: per-conversation provider/model override columns
         for col in ("provider", "model"):
             try: