Remove pull_image + list_registries; mark Gruppen 6+7 as entfällt

DSM methods for SYNO.Docker.Image/pull and SYNO.Docker.Registry/get
did not behave as expected in production testing against the NAS.
Tools deregistered, modules deleted, tests removed, CLAUDE.md updated.
Tool count: 19 → 17.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

tests/test_modules/test_images.py

@@ -1,6 +1,6 @@
 """Tests for modules/images.py."""
 
-from unittest.mock import AsyncMock, patch
+from unittest.mock import AsyncMock
 
 import pytest
 
@@ -491,140 +491,3 @@ async def test_check_image_updates_for_project():
     result = await tools["check_image_updates"](project_name="myapp")
     assert "myapp" in result
     assert "nginx:1.24" in result
-
-
-# ──────────────────────────────────────────────────────────────────────────────
-#  pull_image
-# ──────────────────────────────────────────────────────────────────────────────
-
-PULLED_IMAGE = {
-    "id": "sha256:dddd",
-    "repository": "postgres",
-    "tags": ["17.8"],
-    "size": 80 * 1024 * 1024,
-    "created": 1700000000,
-    "upgradable": False,
-}
-
-
-@pytest.mark.asyncio
-async def test_pull_image_success():
-    from mcp_synology_container.modules.images import register_images
-
-    client = AsyncMock()
-
-    async def mock_request(api, method, **kwargs):
-        if api == "SYNO.Docker.Image" and method == "pull":
-            return {}
-        if api == "SYNO.Docker.Image" and method == "list":
-            return {"images": [PULLED_IMAGE]}
-        return {}
-
-    client.request.side_effect = mock_request
-    mcp, tools = make_mock_mcp()
-    register_images(mcp, make_config(), client)
-
-    with patch("asyncio.sleep", new=AsyncMock()):
-        result = await tools["pull_image"]("postgres:17.8")
-
-    assert "Pulled postgres:17.8" in result
-    assert "MiB" in result
-
-
-@pytest.mark.asyncio
-async def test_pull_image_no_tag_defaults_to_latest():
-    from mcp_synology_container.modules.images import register_images
-
-    client = AsyncMock()
-    found_image = {**PULLED_IMAGE, "repository": "nginx", "tags": ["latest"]}
-
-    async def mock_request(api, method, **kwargs):
-        if api == "SYNO.Docker.Image" and method == "pull":
-            # Verify tag defaults to "latest"
-            assert kwargs.get("params", {}).get("tag") == "latest"
-            return {}
-        if api == "SYNO.Docker.Image" and method == "list":
-            return {"images": [found_image]}
-        return {}
-
-    client.request.side_effect = mock_request
-    mcp, tools = make_mock_mcp()
-    register_images(mcp, make_config(), client)
-
-    with patch("asyncio.sleep", new=AsyncMock()):
-        result = await tools["pull_image"]("nginx")
-
-    assert "Pulled nginx:latest" in result
-
-
-@pytest.mark.asyncio
-async def test_pull_image_registry_prefixed():
-    """Registry-prefixed images (e.g. ghcr.io/foo/bar:v1) split at last ':'."""
-    from mcp_synology_container.modules.images import register_images
-
-    client = AsyncMock()
-    found_image = {
-        **PULLED_IMAGE,
-        "repository": "ghcr.io/open-webui/open-webui",
-        "tags": ["v0.9.0"],
-    }
-
-    async def mock_request(api, method, **kwargs):
-        if api == "SYNO.Docker.Image" and method == "pull":
-            params = kwargs.get("params", {})
-            assert params["repository"] == "ghcr.io/open-webui/open-webui"
-            assert params["tag"] == "v0.9.0"
-            return {}
-        if api == "SYNO.Docker.Image" and method == "list":
-            return {"images": [found_image]}
-        return {}
-
-    client.request.side_effect = mock_request
-    mcp, tools = make_mock_mcp()
-    register_images(mcp, make_config(), client)
-
-    with patch("asyncio.sleep", new=AsyncMock()):
-        result = await tools["pull_image"]("ghcr.io/open-webui/open-webui:v0.9.0")
-
-    assert "Pulled ghcr.io/open-webui/open-webui:v0.9.0" in result
-
-
-@pytest.mark.asyncio
-async def test_pull_image_timeout():
-    from mcp_synology_container.modules.images import register_images
-
-    client = AsyncMock()
-
-    async def mock_request(api, method, **kwargs):
-        if api == "SYNO.Docker.Image" and method == "pull":
-            return {}
-        # image never appears in list
-        return {"images": []}
-
-    client.request.side_effect = mock_request
-    mcp, tools = make_mock_mcp()
-    register_images(mcp, make_config(), client)
-
-    with patch("asyncio.sleep", new=AsyncMock()):
-        result = await tools["pull_image"]("nonexistent:latest")
-
-    assert "did not complete" in result
-    assert "120" in result
-
-
-@pytest.mark.asyncio
-async def test_pull_image_api_error():
-    from mcp_synology_container.dsm_client import SynologyError
-    from mcp_synology_container.modules.images import register_images
-
-    client = AsyncMock()
-    client.request.side_effect = SynologyError("pull failed", code=400)
-
-    mcp, tools = make_mock_mcp()
-    register_images(mcp, make_config(), client)
-
-    with patch("asyncio.sleep", new=AsyncMock()):
-        result = await tools["pull_image"]("bad/image:tag")
-
-    assert "Error" in result
-    assert "bad/image:tag" in result