Simplify Docker build and pin dependencies for Artifactory compatibility

- Remove npm registry build arguments from Dockerfile
- Use npm install to leverage host machine's npm config
- Pin vite (6.3.6), rollup (4.50.2), and undici-types (7.12.0)
- Remove all .npmrc files from repo (use machine-level config)

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

frontend/package.json

@@ -30,6 +30,7 @@
     "@angular/cli": "^19.2.17",
     "@angular/compiler-cli": "^19.2.0",
     "@types/jasmine": "~5.1.0",
+    "@types/node": "22.10.5",
     "jasmine-core": "~5.6.0",
     "karma": "~6.4.0",
     "karma-chrome-launcher": "~3.2.0",
@@ -38,14 +39,17 @@
     "karma-jasmine-html-reporter": "~2.1.0",
     "typescript": "~5.7.2",
     "vite": "6.3.6",
-    "rollup": "4.50.2"
+    "rollup": "4.50.2",
+    "undici-types": "7.12.0"
   },
   "resolutions": {
     "vite": "6.3.6",
-    "rollup": "4.50.2"
+    "rollup": "4.50.2",
+    "undici-types": "7.12.0"
   },
   "overrides": {
     "vite": "6.3.6",
-    "rollup": "4.50.2"
+    "rollup": "4.50.2",
+    "undici-types": "7.12.0"
   }
 }