chore: align ai-rules config (drop opencode, match 360training)

[jaruesink]

Aligns devagent's ai-rules config with 360training:

• Drop opencode from agent list (removed from ai-rules support, uses AGENTS.md same as codex/copilot)
• Final list: [claude, cursor, codex, copilot, gemini]
• Already on ai-rules v1.4.0, no version change needed
• Regenerated — no output changes (opencode shared AGENTS.md)

Summary by CodeRabbit

• Chores
  • Updated AI agents configuration: removed opencode and reordered agents to [claude, cursor, codex, copilot, gemini].
  • Added two new configuration fields: nested_depth and gitignore.
• Documentation
  • Added public-facing comments describing generation of AGENTS.md and GEMINI.md for codex, copilot, and gemini.

[coderabbitai]

📝 Walkthrough

Walkthrough

The PR updates ai-rules/ai-rules-config.yaml: removes opencode from the agents list and swaps codex and copilot; adds nested_depth: 0 and gitignore: false; and inserts public-facing comments describing AGENTS.md and GEMINI.md generation for codex, copilot, and gemini. (49 words)

Changes

Cohort / File(s)	Summary
Configuration Update ai-rules/ai-rules-config.yaml	Removed opencode from agents and reordered codex and copilot; added nested_depth: 0 and gitignore: false; added public-facing comments about AGENTS.md and GEMINI.md generation for codex, copilot, and gemini.

Estimated code review effort

🎯 1 (Trivial) | ⏱️ ~2 minutes

Poem

🐰 I nibble lines of YAML by moonlight's glow,
I hop an agent out, then swap two in a row,
A tiny depth and a flag now sit in place,
Notes about AGENTS and GEMINI leave a trace,
Hare-brained tweaks, but tidy — a config embrace. 🥕✨

🚥 Pre-merge checks | ✅ 2

✅ Passed checks (2 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title accurately describes the main changes: removing opencode from the agent list and aligning configuration with 360training standards.

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✨ Finishing touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Post copyable unit tests in a comment
• Commit unit tests in branch fix/ai-rules-config

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No actionable comments were generated in the recent review. 🎉

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[coderabbitai]

Actionable comments posted: 1

🤖 Fix all issues with AI agents

In `@ai-rules/ai-rules-config.yaml`:
- Around line 7-8: The inline comment above the agents list is stale: update the
comment that mentions "copilot, codex, opencode, gemini: Generate AGENTS.md" so
it matches the actual agents array (agents: [claude, cursor, codex, copilot,
gemini]); remove "opencode" from the comment or reword it to reflect the current
agents list and ensure the comment accurately references the 'agents' key and
the AGENTS.md generation behavior.