feat(mcp): catalogue préconfiguré + état persisté + infra pytest

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

backend/tests/test_mcp_config.py

@@ -0,0 +1,39 @@
+import os
+import tempfile
+
+os.environ.setdefault("DATA_DIR", tempfile.mkdtemp())
+os.environ.setdefault("WORKSPACE_DIR", tempfile.mkdtemp())
+
+from app import db  # noqa: E402
+from app import mcp_client  # noqa: E402
+
+db.init_db()
+
+
+def test_catalog_has_preconfigured_servers():
+    for sid in ("playwright", "context7", "fetch", "searxng", "custom"):
+        assert sid in mcp_client.CATALOG
+        assert mcp_client.CATALOG[sid]["label"]
+
+
+def test_state_defaults_disabled():
+    state = mcp_client.get_mcp_state()
+    assert set(state) == set(mcp_client.CATALOG)
+    assert all(not s["enabled"] for s in state.values())
+
+
+def test_toggle_persists():
+    mcp_client.set_mcp_state("fetch", enabled=True, params={})
+    assert mcp_client.get_mcp_state()["fetch"]["enabled"] is True
+    mcp_client.set_mcp_state("fetch", enabled=False, params={})
+    assert mcp_client.get_mcp_state()["fetch"]["enabled"] is False
+
+
+def test_custom_params_persist():
+    mcp_client.set_mcp_state(
+        "custom", enabled=False, params={"command": "npx -y some-mcp"}
+    )
+    assert (
+        mcp_client.get_mcp_state()["custom"]["params"]["command"]
+        == "npx -y some-mcp"
+    )