feat(kiro): add configuration file backup support

Integrate Kiro with the MCP host configuration backup system to provide
automatic backup creation before configuration changes.

Key changes:
- Add 'kiro' to supported hostnames in BackupInfo validator
- Update KiroHostStrategy.write_configuration() to use atomic operations
- Implement backup creation with MCPHostConfigBackupManager
- Add rollback capability on write failures
- Support configurable backup skipping via no_backup parameter

Backup files follow established naming: mcp.json.kiro.YYYYMMDD_HHMMSS_microseconds
Stored in: ~/.hatch/mcp_host_config_backups/kiro/

Author: LittleCoinCoin

hatch/mcp_host_config/backup.py

@@ -37,7 +37,7 @@ def validate_hostname(cls, v):
         """Validate hostname is supported."""
         supported_hosts = {
             'claude-desktop', 'claude-code', 'vscode', 
-            'cursor', 'lmstudio', 'gemini'
+            'cursor', 'lmstudio', 'gemini', 'kiro'
         }
         if v not in supported_hosts:
             raise ValueError(f"Unsupported hostname: {v}. Supported: {supported_hosts}")

hatch/mcp_host_config/strategies.py

@@ -14,6 +14,7 @@
 
 from .host_management import MCPHostStrategy, register_host_strategy
 from .models import MCPHostType, MCPServerConfig, HostConfiguration
+from .backup import MCPHostConfigBackupManager, AtomicFileOperations
 
 logger = logging.getLogger(__name__)
 
@@ -457,7 +458,7 @@ def read_configuration(self) -> HostConfiguration:
             return HostConfiguration(servers={})
 
     def write_configuration(self, config: HostConfiguration, no_backup: bool = False) -> bool:
-        """Write configuration to Kiro."""
+        """Write configuration to Kiro with backup support."""
         config_path = self.get_config_path()
         if not config_path:
             return False
@@ -479,9 +480,17 @@ def write_configuration(self, config: HostConfiguration, no_backup: bool = False
 
             existing_data[self.get_config_key()] = servers_data
 
-            # Write updated configuration
-            with open(config_path, 'w', encoding='utf-8') as f:
-                json.dump(existing_data, f, indent=2)
+            # Use atomic write with backup support
+            backup_manager = MCPHostConfigBackupManager()
+            atomic_ops = AtomicFileOperations()
+            
+            atomic_ops.atomic_write_with_backup(
+                file_path=config_path,
+                data=existing_data,
+                backup_manager=backup_manager,
+                hostname="kiro",
+                skip_backup=no_backup
+            )
 
             return True