fix(release): Restore yaml runtime dependency

Move yaml into runtime dependencies so the published npm installer
works in clean npx environments again. Bump the package to 9.5.1,
add the patch release notes, and keep README metadata aligned with
the release state.

Fixes #445

package.json

@@ -1,6 +1,6 @@
 {
   "name": "antigravity-awesome-skills",
-  "version": "9.5.0",
+  "version": "9.5.1",
   "description": "1,344+ agentic skills for Claude Code, Gemini CLI, Cursor, Antigravity & more. Installer CLI.",
   "license": "MIT",
   "scripts": {
@@ -55,7 +55,7 @@
     "app:build": "npm run app:setup && cd apps/web-app && npm run build",
     "app:preview": "cd apps/web-app && npm run preview"
   },
-  "devDependencies": {
+  "dependencies": {
     "yaml": "^2.8.2"
   },
   "repository": {