Document Nix attribute style convention

[shikanime]

What

Documents the Nix attribute-style rule in AGENTS.md: dotted assignment (a.b.c = v;) for a single leaf under a shared parent key; a record literal once two or more keys share that parent, with keys sorted.

Why

The convention previously lived only in the machines repo and drove review churn elsewhere; every Nix-touching repo now carries the same rule.

References

Related: shikanime-labs/machines#1315

Co-authored-by: Automata automata@shikanime.studio

Summary by CodeRabbit

• Documentation
  • Added Nix formatting guidance covering dotted assignments, record literals, and key ordering.

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: defaults

Review profile: CHILL

Plan: Advanced

Run ID: 311af6a2-6182-4598-b1bd-402e0a7f70ee

📥 Commits

Reviewing files that changed from the base of the PR and between 8825fcd and 7a92d86.

📒 Files selected for processing (1)

• AGENTS.md

Included review availability: Your plan provides up to 1 included review per hour; 0 remain after this review.

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📝 Walkthrough

Walkthrough

AGENTS.md now documents Nix formatting rules for single leaf assignments, multi-key record literals, and sorted keys.

Changes

Nix formatting guidance

Layer / File(s)	Summary
Document Nix style rules AGENTS.md	Adds guidance to use dotted assignments for single leaf values, record literals for multiple keys under one parent, and sorted keys.

Estimated code review effort: 1 (Trivial) | ~2 minutes

Merge Risk: ⚪ Minimal · up to 7a92d

This documentation-only change has no runtime or production impact and is ready to merge.

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title clearly and concisely describes the main change: documenting the Nix attribute-style convention.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check. Docstring coverage is scoped to functions touched by this diff. Analyzed 0 functions across 0…
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch chore/agents-nix-style

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