chore: update .gitignore and improve cleanup handling in scripts

- Added .claude/hans/ to .gitignore to prevent tracking of specific directory.
- Updated cleanup calls in dev.mjs and start.mjs to use await for proper asynchronous handling.
- Enhanced error handling during cleanup in case of failures.
- Improved server failure handling in startServerAndWait function to ensure proper termination of failed processes.

package-lock.json

@@ -28,7 +28,7 @@
     },
     "apps/server": {
       "name": "@automaker/server",
-      "version": "0.7.1",
+      "version": "0.7.3",
       "license": "SEE LICENSE IN LICENSE",
       "dependencies": {
         "@anthropic-ai/claude-agent-sdk": "0.1.76",
@@ -78,7 +78,7 @@
     },
     "apps/ui": {
       "name": "@automaker/ui",
-      "version": "0.7.1",
+      "version": "0.7.3",
       "hasInstallScript": true,
       "license": "SEE LICENSE IN LICENSE",
       "dependencies": {