build(deps): remove unused packages from package.json

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

package.json

@@ -55,20 +55,11 @@
   },
   "private": true,
   "dependencies": {
-    "@angular/animations": "^22.2.1",
-    "@angular/cdk": "^22.2.1",
     "@angular/common": "^22.2.1",
     "@angular/compiler": "^22.2.1",
     "@angular/core": "^22.2.1",
-    "@angular/forms": "^22.2.1",
-    "@angular/material": "^22.2.1",
     "@angular/platform-browser": "^22.2.1",
-    "@angular/platform-browser-dynamic": "^22.2.1",
-    "@angular/platform-server": "^22.2.1",
     "@angular/router": "^22.2.1",
-    "@angular/ssr": "^22.2.1",
-    "express": "^5.2.1",
-    "markdown-it": "^15.0.2",
     "rxjs": "~7.8.0",
     "tslib": "^2.3.0"
   },
@@ -76,9 +67,7 @@
     "@angular/build": "^22.2.1",
     "@angular/cli": "^22.2.1",
     "@angular/compiler-cli": "^22.2.1",
-    "@types/express": "^5.0.6",
     "@types/node": "^25.7.0",
-    "@types/showdown": "^2.0.6",
     "@typescript-eslint/eslint-plugin": "8.71.1",
     "@typescript-eslint/parser": "8.71.1",
     "angular-eslint": "22.5.0",