[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>

plugins/compounding-engineering/.claude-plugin/plugin.json

@@ -1,7 +1,7 @@
 {
   "name": "compounding-engineering",
-  "version": "2.5.0",
-  "description": "AI-powered development tools. 24 agents, 16 commands, 11 skills, 2 MCP servers for code review, research, design, and workflow automation.",
+  "version": "2.6.0",
+  "description": "AI-powered development tools. 23 agents, 16 commands, 11 skills, 2 MCP servers for code review, research, design, and workflow automation.",
   "author": {
     "name": "Kieran Klaassen",
     "email": "kieran@every.to",