feat(ci): add automatic OpenCode PR review workflow

[LiusCraft]

Summary

• add .github/workflows/opencode-pr-review.yml to run OpenCode review automatically on pull_request open/update events
• skip draft pull requests and use opencode/minimax-m2.5-free with OPENCODE_API_KEY
• keep README.md focused on project overview, and codify doc scope expectations in AGENTS.md

[opencode-agent]

Review

Workflow (.github/workflows/opencode-pr-review.yml)

Positives:

• Correctly skips draft PRs
• Appropriate permissions scope
• Uses vars with fallback for model

Issues:

1. Pinning: Use @latest is risky for production. Pin to a specific version (e.g., @v1.x.x).
2. Missing error handling: No explicit handling if OPENCODE_API_KEY secret is missing - will fail with unclear error.
3. No timeout: Add timeout-minutes: 10 to prevent hung workflows.

AGENTS.md

The additions at lines 151-158 documenting doc scope expectations are good. No issues.

README.md

The removal of 16 lines streamlines the README as intended. However, the current README is still ~200 lines - arguably not "concise." Consider whether more trimming aligns with the stated goal.

Summary

Severity	Issue
Medium	Pin OpenCode action version
Low	Add job timeout
Low	Handle missing OPENCODE_API_KEY gracefully

The workflow is functional and well-structured. The main recommendation is pinning the action version for reproducibility.

opencode session  |  github run