fix: v0.4.1 — remove pause_container / unpause_container (DSM unsupported)

Live test on this DSM firmware: SYNO.Docker.Container has no pause/
unpause method ("Method does not exist"). The Container Manager GUI
action menu only exposes Start / Stop / Force-Stop / Restart / Reset —
pause/resume simply isn't a feature here.

The two tools were briefly shipped in 0.4.0 (implemented by symmetry
with the verified stop call) and have now been removed rather than
left as a broken surface. The remaining lifecycle tools
(start_container, stop_container, restart_container) are unaffected.

Tool count: 33 → 31. Closes #7 (won't fix — DSM limitation).

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

src/mcp_synology_container/modules/containers.py

@@ -390,44 +390,6 @@ def register_containers(mcp: FastMCP, config: AppConfig, client: DsmClient) -> N
         except Exception as e:
             return f"Error restarting container '{container_name}': {e}"
 
-    @mcp.tool()
-    async def pause_container(container_name: str, confirmed: bool = False):
-        """Pause a running container. Requires confirmed=True."""
-        if not confirmed:
-            return (
-                f"Preview: would pause container '{container_name}'.\n"
-                f"Call this tool again with confirmed=True to proceed."
-            )
-
-        resolved_name = await _resolve_container_name(client, container_name)
-        display_name = _strip_hash_prefix(resolved_name)
-        try:
-            await client.request(
-                "SYNO.Docker.Container",
-                "pause",
-                version=1,
-                params={"name": json.dumps(resolved_name)},
-            )
-            return f"Paused container '{display_name}'."
-        except Exception as e:
-            return f"Error pausing container '{container_name}': {e}"
-
-    @mcp.tool()
-    async def unpause_container(container_name: str):
-        """Unpause a paused container."""
-        resolved_name = await _resolve_container_name(client, container_name)
-        display_name = _strip_hash_prefix(resolved_name)
-        try:
-            await client.request(
-                "SYNO.Docker.Container",
-                "unpause",
-                version=1,
-                params={"name": json.dumps(resolved_name)},
-            )
-            return f"Unpaused container '{display_name}'."
-        except Exception as e:
-            return f"Error unpausing container '{container_name}': {e}"
-
 
 def _container_in_project(container: dict[str, Any], project_name: str) -> bool:
     """Check if a container belongs to a project based on its labels."""