fix: add required fields to plugin manifests

- Add author, homepage, repository to all plugin manifests
- Add license field where missing
- Add commands and agents directory references
- Update keywords for better discoverability

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

plugins/projman/.claude-plugin/plugin.json

@@ -6,13 +6,16 @@
     "name": "Leo Miranda",
     "email": "leobmiranda@gmail.com"
   },
+  "homepage": "https://gitea.hotserv.cloud/personal-projects/support-claude-mktplace/src/branch/main/plugins/projman/README.md",
+  "repository": "https://gitea.hotserv.cloud/personal-projects/support-claude-mktplace.git",
   "license": "MIT",
-  "repository": "https://gitea.hotserv.cloud/personal-projects/support-claude-mktplace",
   "keywords": [
     "project-management",
     "sprint-planning",
     "gitea",
     "agile",
     "lessons-learned"
-  ]
+  ],
+  "commands": ["./commands/"],
+  "agents": ["./agents/"]
 }