Fix Jenkins-update flow: redeploy_project pull + delete_image safety + delete_container

Bug fixes from product test:
1. redeploy_project: BUILD_FAILED now includes explicit image pull (stop → pull → start)
2. delete_image: Distinguishes running vs stopped containers, suggests system_prune for stopped refs
3. New tool delete_container: Verify stopped state before deletion, confirmation required

Tests added for all three paths plus stopped-container edge cases.

Co-Authored-By: Claude Haiku 4.5 <noreply@anthropic.com>

tests/test_modules/test_projects.py

@@ -100,6 +100,7 @@ async def test_list_projects_tool():
             def decorator(fn):
                 tools[fn.__name__] = fn
                 return fn
+
             return decorator
 
     register_projects(MockMCP(), config, client)
@@ -128,6 +129,7 @@ async def test_stop_project_requires_confirmation():
             def decorator(fn):
                 tools[fn.__name__] = fn
                 return fn
+
             return decorator
 
     register_projects(MockMCP(), config, client)
@@ -154,6 +156,7 @@ async def test_redeploy_project_requires_confirmation():
             def decorator(fn):
                 tools[fn.__name__] = fn
                 return fn
+
             return decorator
 
     register_projects(MockMCP(), config, client)
@@ -183,6 +186,7 @@ def make_projects_tools(client):
             def decorator(fn):
                 tools[fn.__name__] = fn
                 return fn
+
             return decorator
 
     register_projects(MockMCP(), config, client)
@@ -249,7 +253,7 @@ async def test_redeploy_stopped_project_starts_directly():
 
 @pytest.mark.asyncio
 async def test_redeploy_build_failed_project():
-    """BUILD_FAILED project: force-stop (non-fatal), then start."""
+    """BUILD_FAILED project: stop, pull images, then start (3 steps)."""
     client = AsyncMock()
     calls = []
 
@@ -265,13 +269,16 @@ async def test_redeploy_build_failed_project():
     assert "redeployed successfully" in result
     methods = [m for _, m in calls]
     assert "stop" in methods
+    assert "pull" in methods  # New: pull step
     assert "start" in methods
-    assert methods.index("stop") < methods.index("start")
+    # Order: stop → pull → start
+    assert methods.index("stop") < methods.index("pull")
+    assert methods.index("pull") < methods.index("start")
 
 
 @pytest.mark.asyncio
 async def test_redeploy_build_failed_stop_error_nonfatal():
-    """BUILD_FAILED: stop failure must not abort the redeploy."""
+    """BUILD_FAILED: stop/pull failure must not abort the redeploy."""
     from mcp_synology_container.dsm_client import SynologyError
 
     client = AsyncMock()
@@ -281,6 +288,8 @@ async def test_redeploy_build_failed_stop_error_nonfatal():
             return project_list("BUILD_FAILED")
         if method == "stop":
             raise SynologyError("already stopped", code=2101)
+        if method == "pull":
+            raise SynologyError("pull failed", code=2102)
         return {}  # start succeeds
 
     client.request.side_effect = mock_request