fix: quote review-code skill argument hint

[johnnygreco]

📋 Summary

This PR fixes the review-code skill frontmatter so Codex can load it successfully. Quoting the argument-hint preserves the Claude Code-style metadata while making the value valid YAML.

🔗 Related Issue

N/A

🔄 Changes

• Quote the argument-hint value in .agents/skills/review-code/SKILL.md so [pr-number] [special instructions] is parsed as a string instead of invalid YAML flow syntax.

🧪 Testing

• Skill frontmatter parses successfully with python3/PyYAML
• git diff --check origin/main..HEAD passes
• make test passes (not run — metadata-only skill frontmatter change)
• Unit tests added/updated (N/A — no runtime code change)
• E2E tests added/updated (N/A — no E2E behavior change)

✅ Checklist

• Follows commit message conventions
• Commits are signed off (DCO)
• Architecture docs updated (N/A — skill metadata only)

[greptile-apps]

Greptile Summary

This PR fixes a YAML parsing error in the review-code skill frontmatter by quoting the argument-hint value. Without quotes, [pr-number] [special instructions] is interpreted by YAML parsers as an invalid flow sequence, preventing Codex from loading the skill.

• Wraps the argument-hint string in double quotes in .agents/skills/review-code/SKILL.md so the value is treated as a plain string instead of a YAML flow sequence.

Confidence Score: 5/5

Safe to merge — the change is a one-line YAML quoting fix with no runtime behavior impact.

The fix correctly addresses a real YAML parsing failure by quoting a string that was being misinterpreted as a flow sequence. The change is isolated to skill metadata and does not affect any runtime logic.

No files require special attention.

Important Files Changed

Filename	Overview
.agents/skills/review-code/SKILL.md	Single-character fix quoting the argument-hint YAML value to prevent it from being parsed as an invalid flow sequence; no logic changes.

Sequence Diagram

sequenceDiagram
    participant Codex
    participant SKILL.md
    participant YAMLParser

    Codex->>SKILL.md: Load skill frontmatter
    SKILL.md->>YAMLParser: Parse YAML block
    note over YAMLParser: Before: argument-hint: [pr-number] [special instructions]<br/>→ parsed as invalid YAML flow sequence → error
    note over YAMLParser: After: argument-hint: "[pr-number] [special instructions]"<br/>→ parsed as string → success
    YAMLParser-->>Codex: Return skill metadata (string value)
    Codex-->>Codex: Skill loaded successfully

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[github-actions]

Review: PR #616 — fix: quote review-code skill argument hint

Summary

One-character-class change to .agents/skills/review-code/SKILL.md: the
argument-hint frontmatter value is wrapped in double quotes so the
bracketed form [pr-number] [special instructions] is parsed as a string
instead of YAML flow sequence syntax. This unblocks Codex loading the skill
while remaining compatible with Claude Code, which uses the same field as
a display hint.

Findings

Correctness

• YAML flow scalars that start with [ are parsed as the beginning of a
  flow sequence; [pr-number] [special instructions] is not valid flow
  syntax (two sequences with no separator + unquoted words), so strict
  loaders reject it. Double-quoting makes it an unambiguous string — the
  right fix.
• No functional effect on Claude Code: argument-hint is a free-form
  string display hint, so quoting does not change what the user sees aside
  from the literal value being identical.

Consistency

• Worth scanning the rest of .agents/skills/**/SKILL.md for the same
  pattern so other skills don't hit the same Codex-load failure later. Not
  required for this PR, but a natural follow-up.

Testing

• The author notes PyYAML parses the frontmatter successfully, which is
  the right check for a metadata-only change. No runtime code path is
  affected, so skipping make test is reasonable.

Risk

• Blast radius is a single frontmatter line in a developer-facing skill
  definition. Backward-compatible with existing Claude Code behavior.

Verdict

Approve. Minimal, targeted fix with a clear motivation (YAML-strict loaders
like Codex) and no risk to runtime behavior. Consider a follow-up sweep of
other SKILL.md files to apply the same quoting preemptively.