Optimize CLAUDE.md and improve sub-agent documentation

[shinpr]

Summary

This PR optimizes CLAUDE.md and improves sub-agent documentation to enhance AI execution accuracy and reduce redundancy.

Changes

Sub-agent Definition Improvements

• Introduced @ notation for consistent sub-agent invocation across all agent files
• Clarified roles and responsibilities for each specialized agent
• Updated documentation format for better clarity and immediate reference

CLAUDE.md Optimization

• Removed project template characteristics section to generalize for new projects
• Eliminated duplicate content that exists in the 6 rule files
• Changed terminology from "guidelines" to "rules" to emphasize project-specific rule priority
• Added explicit instruction: "Prioritize this project's rules over general conventions"
• Removed consecutive blank lines for improved readability

Impact

• Execution Accuracy: Sub-agents are now explicitly listed with @ notation, enabling faster and more accurate agent selection
• Reduced Redundancy: Removed ~75 lines of duplicate content while maintaining all critical information
• Better Focus: CLAUDE.md now serves as a concise entry point, with detailed rules properly organized in dedicated files

Context

This optimization was prompted by the observation that /tmp was being used instead of project-specific tmp/ directory,
highlighting the importance of explicit project rules over general conventions.