feat: salvage Angular developer skill

manifests/install-components.json

@@ -81,6 +81,14 @@
         "framework-language"
       ]
     },
+    {
+      "id": "framework:angular",
+      "family": "framework",
+      "description": "Angular-focused engineering guidance and rules. Currently resolves through the shared framework-language module.",
+      "modules": [
+        "framework-language"
+      ]
+    },
     {
       "id": "framework:react",
       "family": "framework",

manifests/install-modules.json

@@ -122,6 +122,7 @@
       "description": "Core framework, language, and application-engineering skills.",
       "paths": [
         "skills/android-clean-architecture",
+        "skills/angular-developer",
         "skills/api-design",
         "skills/backend-patterns",
         "skills/coding-standards",