Fix code review issues: encapsulation, module detection, and endpoint URL

Co-authored-by: al7566 <215473224+al7566@users.noreply.github.com>

Author: Copilot

key-manager.config.json

@@ -96,7 +96,7 @@
       "type": "api",
       "description": "External key finder service for retrieving missing keys",
       "authSecret": "KEYFINDER_SECRET",
-      "endpoint": "https://api.keyfinder.example.com/v1/keys"
+      "endpoint": "https://api.keyfinder.example/v1/keys"
     }
   ],
   "injectionTargets": {

scripts/key-manager.ts

@@ -407,6 +407,13 @@ class KeyManager {
     console.log('ℹ️  Keys remain accessible in GitHub secrets for deployment');
   }
 
+  /**
+   * Get configuration
+   */
+  getConfig(): Config {
+    return this.config;
+  }
+
   /**
    * Generate summary report
    */
@@ -481,7 +488,8 @@ async function main() {
 
         // Read keys from environment
         const envKeys = new Map<string, string>();
-        for (const keyConfig of manager['config'].requiredKeys) {
+        const config = manager.getConfig();
+        for (const keyConfig of config.requiredKeys) {
           const value = process.env[keyConfig.name];
           if (value) {
             envKeys.set(keyConfig.name, value);
@@ -507,8 +515,9 @@ async function main() {
   }
 }
 
-// Run if executed directly
-if (import.meta.url === `file://${process.argv[1]}`) {
+// Run if executed directly (ES module check)
+const isMainModule = process.argv[1] && import.meta.url.endsWith(process.argv[1]);
+if (isMainModule || process.argv[1]?.includes('key-manager.ts')) {
   main().catch((error) => {
     console.error('Fatal error:', error);
     exit(1);