Revert PR #43 agent-based code that was brought in during the main merge:
- Remove generateBuiltinAgents and all agent-related logic from generate script
- Delete src/costrict/review/agent/ directory
- Delete src/commands/security-review.ts (handled by bundled skill)
- Restore PR #64 extension.ts with getClaudeConfigHomeDir approach
- Remove REVIEW_AGENTS from builtInAgents.ts
- Keep review command (needed for MCP entry), but use CommandLocale instead of agent
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>