refactor(agents): remove duplicate every-style-editor agent

The every-style-editor agent file was a duplicate of the existing
every-style-editor skill. Agent files are eagerly loaded into the
Task tool definition on every API call (~100-200 tokens each),
while skills are lazy-loaded only when invoked. Removing the
duplicate saves tokens and eliminates potential runtime errors
when the agent is invoked via Task tool instead of Skill tool.

Changes:
- Delete agents/workflow/every-style-editor.md (skill version
  in skills/every-style-editor/ already exists)
- Update README.md workflow agent count from 5 to 4
- Update plugin.json agent counts from 29 to 28

Fixes #156

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

plugins/compound-engineering/.cursor-plugin/plugin.json

@@ -2,7 +2,7 @@
   "name": "compound-engineering",
   "displayName": "Compound Engineering",
   "version": "2.33.0",
-  "description": "AI-powered development tools. 29 agents, 22 commands, 19 skills, 1 MCP server for code review, research, design, and workflow automation.",
+  "description": "AI-powered development tools. 28 agents, 22 commands, 19 skills, 1 MCP server for code review, research, design, and workflow automation.",
   "author": {
     "name": "Kieran Klaassen",
     "email": "kieran@every.to",