feat(bundles): add editorial bundle plugins

plugins/antigravity-bundle-full-stack-developer/skills/api-patterns/documentation.md

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+# API Documentation Principles
+
+> Good docs = happy developers = API adoption.
+
+## OpenAPI/Swagger Essentials
+
+```
+Include:
+├── All endpoints with examples
+├── Request/response schemas
+├── Authentication requirements
+├── Error response formats
+└── Rate limiting info
+```
+
+## Good Documentation Has
+
+```
+Essentials:
+├── Quick start / Getting started
+├── Authentication guide
+├── Complete API reference
+├── Error handling guide
+├── Code examples (multiple languages)
+└── Changelog
+```