fix(plugins): normalize author fields and versions in 4 plugin.json files

- executive-mentor: add url to author, add homepage + repository
- self-improving-agent: add url to author, version 1.0.0 → 2.1.2
- playwright-pro: fix author name (Reza → Alireza), replace email with url, version 1.0.0 → 2.1.2
- google-workspace-cli: add url to author

All plugin.json files now use consistent author object format.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

c-level-advisor/executive-mentor/.claude-plugin/plugin.json

@@ -3,8 +3,11 @@
   "description": "Adversarial thinking partner for founders and executives. Stress-tests plans, prepares for board meetings, navigates hard decisions, and forces honest post-mortems.",
   "version": "2.1.2",
   "author": {
-    "name": "Alireza Rezvani"
+    "name": "Alireza Rezvani",
+    "url": "https://alirezarezvani.com"
   },
+  "homepage": "https://github.com/alirezarezvani/claude-skills/tree/main/c-level-advisor/executive-mentor",
+  "repository": "https://github.com/alirezarezvani/claude-skills",
   "license": "MIT",
   "skills": "./"
 }