Strengthen lab AGENTS env-development guardrails

[willccbb]

Motivation

• Make end-user guidance explicit that environment source code must not be initialized manually and that the Prime CLI is the canonical interface for environment workflows.
• Prevent inconsistent or messy environment development by requiring prime lab setup before starting env work and by encouraging a dedicated environments/<env_name>/ layout.
• Ensure agents follow and surface best-practice patterns and redirect users to the supported workflow when requests would deviate from the guidelines.

Description

• Updated assets/agents/end_user_best_practices.md to add strict instructions: never initialize env source manually, always use prime env init, prefer the Prime CLI for lifecycle operations, require prime lab setup before env development, and keep environments self-contained under environments/<env_name>/.
• Regenerated the compiled lab guidance by running scripts/sync.py, which updated assets/lab/AGENTS.md to reflect the source changes.
• Committed the modified source and compiled files with a focused message to make the guardrails discoverable to agents and users.

Testing

• Ran uv run pre-commit install which completed successfully.
• Ran uv run python scripts/sync.py to regenerate compiled AGENTS files which completed and updated assets/lab/AGENTS.md.
• Ran uv run pre-commit run --all-files (includes ruff checks and the sync validation) and it passed.

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Codex Task

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Note

Low Risk
Documentation-only updates that tighten recommended workflows for lab environment development; no runtime or API behavior changes.

Overview
Strengthens lab end-user guidance to explicitly enforce the Prime CLI as the canonical environment workflow: never manually initialize env source, require prime lab setup before env work, and standardize on a self-contained environments/<env_name>/ layout with documented best-practice patterns.

Regenerates the compiled lab assets/lab/AGENTS.md so it reflects the updated source guidance in assets/agents/end_user_best_practices.md.

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Cursor Bugbot has reviewed your changes and found 1 potential issue.

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Missing skill update for new lab setup prerequisite

Low Severity

The PR introduces a new requirement that prime lab setup must be run before beginning environment development, but skills/create-environments/SKILL.md does not reflect this prerequisite. The skill file starts with prime env init my-env as the first step without mentioning the lab setup requirement. This creates an inconsistency between the agent guidance files and the create-environments skill, potentially causing agents to skip the now-mandatory workspace setup. Per the Skills Updates rule: "If workflow-relevant changes are detected without matching skill updates, request that the author update the impacted skills before merge."