Remove _module-installer pattern for declarative directory creation

- Delete src/_module-installer folder (security risk: arbitrary code execution)
- Remove chalk, fs-extra from dependencies (no longer needed)
- Update eslint.config.mjs to remove _module-installer CommonJS overrides
- Update module.yaml with directories key using variable references

Author: Brian Madison

eslint.config.mjs

@@ -114,17 +114,6 @@ export default [
     },
   },
 
-  // Module installer scripts use CommonJS for compatibility
-  {
-    files: ['**/_module-installer/**/*.js'],
-    rules: {
-      // Allow CommonJS patterns for installer scripts
-      'unicorn/prefer-module': 'off',
-      'n/no-missing-require': 'off',
-      'n/no-unpublished-require': 'off',
-    },
-  },
-
   // ESLint config file should not be checked for publish-related Node rules
   {
     files: ['eslint.config.mjs'],

package.json

@@ -50,10 +50,6 @@
       "markdownlint-cli2"
     ]
   },
-  "dependencies": {
-    "chalk": "^4.1.2",
-    "fs-extra": "^11.3.0"
-  },
   "devDependencies": {
     "@astrojs/sitemap": "^3.6.0",
     "@astrojs/starlight": "^0.37.0",

src/_module-installer/installer.js

@@ -13,3 +13,7 @@ bmb_creations_output_folder:
   prompt: "Where should your custom agents, workflows, and modules be saved?"
   default: "{output_folder}/bmb-creations"
   result: "{project-root}/{value}"
+
+# Directories to create during installation (declarative, no code execution)
+directories:
+  - "{bmb_creations_output_folder}"