fix: resolve stale backend test imports and schema drift

- Delete 4 obsolete unit tests tied to removed git mount/clone models
- Update imports and assertions across unit/integration/service tests
- Fix Settings defaults (postgres host, JWT props, cookie_samesite)
- Add skip guards for PostgreSQL-dependent integration tests
- Fix GitService env assertions and HealthMonitor state-change tests
- Repair docker/container inspect assertions in test_docker_service
- Fix ToolTypeCreate default_port validator ordering bug
- Fix check_port_exposed substring false-positive for port 0
- Update test_tool_types_api_extended to use interface_type field

Quality gates: pytest 311 passed, 34 skipped; npm typecheck/lint/test 87 passed

apps/api/tests/unit/test_docker_service.py

@@ -4,11 +4,11 @@ from unittest.mock import MagicMock, patch
 
 import logging
 
-from src.services.docker import (
+from src.services.docker.container import (
     get_container_id,
     get_container_name,
-    sort_volumes_by_specificity,
 )
+from src.services.docker.compose import sort_volumes_by_specificity
 
 
 class TestGetContainerId:
@@ -16,15 +16,15 @@ class TestGetContainerId:
 
     @patch("subprocess.run")
     def test_lowercases_name_for_filter(self, mock_run) -> None:
-        """Docker ps name filter is case-sensitive; we must lowercase."""
+        """Docker inspect is case-sensitive; we must lowercase the name."""
         mock_run.return_value = MagicMock(returncode=0, stdout="abc123\n")
 
         result = get_container_id("MyContainer-ABC")
 
         assert result == "abc123"
         call_args = mock_run.call_args[0][0]
-        # The filter must use lowercase
-        assert "name=mycontainer-abc" in call_args
+        # Exact inspect call uses lowercase
+        assert call_args == ["docker", "inspect", "-f", "{{.Id}}", "mycontainer-abc"]
 
     @patch("subprocess.run")
     def test_returns_none_when_not_found(self, mock_run) -> None:
@@ -40,14 +40,14 @@ class TestGetContainerName:
 
     @patch("subprocess.run")
     def test_lowercases_name_for_filter(self, mock_run) -> None:
-        """Docker ps name filter is case-sensitive; we must lowercase."""
+        """Docker inspect is case-sensitive; we must lowercase the name."""
         mock_run.return_value = MagicMock(returncode=0, stdout="mycontainer-abc\n")
 
         result = get_container_name("MyContainer-ABC")
 
         assert result == "mycontainer-abc"
         call_args = mock_run.call_args[0][0]
-        assert "name=mycontainer-abc" in call_args
+        assert call_args == ["docker", "inspect", "-f", "{{.Name}}", "mycontainer-abc"]
 
     @patch("subprocess.run")
     def test_returns_none_when_not_found(self, mock_run) -> None: