Add a stateful Proxmox API console and broad handler coverage beyond the

initial QEMU slice, backed by imported contracts for majors 6–9.
- Implement durable handlers for access/auth, cluster, LXC, storage, HA,
  firewall, Ceph, SDN, ACME, notifications, pools, mapping, and node ops
- Serve an interactive Web UI with catalog browsing, demo seed controls,
  and OpenAPI/help surfaces
- Bundle PVE 6.4-15, 7.4-16, and 8.4.5 contract revisions alongside 9.2.3
- Support in-memory runtime contract Apply (POST /ui/api/contract/apply)
  so /version and /api2 routes follow the selected major until restart
- Expand seed profiles (including demo-cluster), migrations 007–008, TLS
  gateway config, Compose/Makefile tooling, and compatibility evidence
- Tighten .gitignore for macOS, hidden directories (.*/), and local secrets

tests/unit/test_core_handlers.py

@@ -166,7 +166,7 @@ async def test_core_login_and_read_endpoints(
     write_snapshot(snapshot_path)
     database = FakeDatabase()
     app = create_app(
-        Settings(contract_snapshot=snapshot_path),
+        Settings(contract_snapshot=snapshot_path, compatibility_evidence=None),
         lambda _settings: database,
         worker_factories=(),
     )
@@ -192,7 +192,8 @@ async def test_core_login_and_read_endpoints(
     assert login.status_code == 200
     assert login.json()["data"]["username"] == "root@pam"
     assert "ticket" in login.json()["data"]
-    assert version.json()["data"]["release"] == "9.2"
+    assert version.json()["data"]["version"] == "test"
+    assert version.json()["data"]["release"] == "test"
     assert nodes.json()["data"][0]["node"] == "pve1"
     assert status.json()["data"]["status"] == "online"
     assert resources.json()["data"][0]["type"] == "qemu"