Add Gemini Code Assist styleguide

[fatherlinux]

Summary

• Adds .gemini/styleguide.md with code review rules derived from the crunchtools constitution
• Adds .gemini/config.yaml to ignore vendor, minified, cache, and lock files
• Focuses on architectural and design rules that CI can't catch (lint/type/test/gourmand already gate PRs)

What Gemini will now review for

• Architecture layer violations
• Security anti-patterns (hardcoded creds, eval/exec)
• Naming convention compliance
• Missing tests for new tools
• Containerfile best practices

🤖 Generated with Claude Code

[gemini-code-assist]

Note

Gemini is unable to generate a summary for this pull request due to the file types involved not being currently supported.