[2.6.0] Remove feedback-codifier agent, update docs theme and style

- Remove feedback-codifier agent from workflow agents (24 → 23 agents)
- Update all component counts across plugin.json, README, and docs site
- Update docs CSS theme (hue: 243, saturation: 1, contrast: 0.71)
- Apply Every style guide fixes (number formatting: "2" → "two", etc.)
- Add v2.6.0 changelog entry to docs site

🤖 Generated with [Claude Code](https://claude.com/claude-code)

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

.claude-plugin/marketplace.json

@@ -11,8 +11,8 @@
   "plugins": [
     {
       "name": "compounding-engineering",
-      "description": "AI-powered development tools that get smarter with every use. Make each unit of engineering work easier than the last. Includes 17 specialized agents, 6 commands, and 1 skill.",
-      "version": "1.1.0",
+      "description": "AI-powered development tools that get smarter with every use. Make each unit of engineering work easier than the last. Includes 23 specialized agents, 16 commands, and 11 skills.",
+      "version": "2.6.0",
       "author": {
         "name": "Kieran Klaassen",
         "url": "https://github.com/kieranklaassen",