docs: standardize agent instructions

[jonathanperis]

Summary

• Rename root agent guidance from CLAUDE.md to standardized AGENTS.md.
• Move .claude/memory/* to .agents/memory/* so non-Claude harnesses can discover the same project context.
• Refresh stale agent-guide implementation facts while converting: Rust builder rust:1.95, Cargo edition 2024, and main.rs line count.
• Remove legacy Claude-specific files and verify no legacy Claude references remain in tracked authored files.

Verification

• python3 scripts/check_docs_drift.py
• custom agent instrumentation check: AGENTS.md + .agents/ present, legacy files absent, no legacy mentions
• git diff --check
• cd docs && bun run build

Summary by CodeRabbit

• Documentation

  • Updated architecture and project documentation to reflect current development environment specifications.

• Chores

  • Updated development toolchain version references.

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: Path: .coderabbit.yaml

Review profile: CHILL

Plan: Pro Plus

Run ID: b26784d5-49d1-433d-8320-8ff4672aa93d

📥 Commits

Reviewing files that changed from the base of the PR and between 384070e and 8ca0bb2.

📒 Files selected for processing (3)

• .agents/memory/MEMORY.md
• .agents/memory/architecture.md
• AGENTS.md

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📝 Walkthrough

Walkthrough

Updated agent and architecture documentation to reflect Rust 1.95 toolchain (Cargo edition 2024) and revised main.rs line-count estimates across two documentation files.

Changes

Documentation Updates

Layer / File(s)	Summary
Rust toolchain and main.rs documentation AGENTS.md, .agents/memory/architecture.md	Updated AGENTS.md to specify Rust 1.95 with Cargo edition 2024, added standardized AGENTS.md + .agents/ layout guidance, revised Dockerfile multi-stage base image to rust:1.95, and updated main.rs line-count descriptions in both documentation files to reflect current size of 173 lines.

Estimated code review effort

🎯 1 (Trivial) | ⏱️ ~3 minutes

🚥 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 accurately summarizes the main objective of the PR, which is to standardize agent-related documentation and project layout by renaming/moving files and updating configuration details.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
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.

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✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch docs/standardize-agents-instructions

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