refactor: install to dist/padded-cell/ like Dirigent

- Plugin name: padded-cell (matches dist subdirectory)
- Install copies files to dist/padded-cell/
- Plugin path set to dist/padded-cell/ directory
- Follows Dirigent pattern: dist/<plugin-name>/

openclaw.plugin.json

@@ -1,15 +1,9 @@
 {
-  "id": "PaddedCell",
+  "id": "padded-cell",
   "name": "PaddedCell",
   "version": "0.1.0",
   "description": "Secure password management, safe execution, and coordinated restart",
-  "entry": "./index.js",
-  "configSchema": {
-    "type": "object",
-    "properties": {
-      "enabled": { "type": "boolean", "default": true }
-    }
-  },
+  "entry": "./safe-restart/dist/index.js",
   "tools": [
     {
       "name": "pcexec",