docs: address review feedback for sync-lexicons skill

[Copilot]

Implements review feedback from PR #110 on the sync-lexicons skill documentation.

Error Handling & Robustness

• Add dependency existence check with jq ... // empty fallback
• Add lexicons repository location verification before git operations
• Handle identical version edge case to prevent unnecessary diffs

Git Version Handling

• Construct explicit OLD_TAG/NEW_TAG variables with v prefix for git operations
• Document variable persistence requirements across shell sessions
• Add version comparison check before running diff

Content Organization

• Fix workflow step numbering: add "Review CHANGELOG" as step 4
• Consolidate duplicate "Don't Skip CHANGELOG/Diff" anti-patterns into single "Review Step"
• Improve DO/DON'T summary formatting

Clarity Improvements

• Add semantic versioning context for bump type selection
• Expand user approval flow with explicit approve/modify/cancel paths
• Document head -200 output limit rationale
• Fix constant name typo: HYPERCERTS_LEXICONS → HYPERCERT_LEXICONS

Example of improved version handling:

# Before: Version mismatch between variable format and git tags
git -C ../hypercerts-lexicon diff v${OLD_VERSION}..v${NEW_VERSION}

# After: Explicit tag construction with edge case handling
if [ "${OLD_VERSION}" = "${NEW_VERSION}" ]; then
  echo "Versions identical; no diff to show."
else
  OLD_TAG="v${OLD_VERSION}"
  NEW_TAG="v${NEW_VERSION}"
  git -C ../hypercerts-lexicon diff "${OLD_TAG}..${NEW_TAG}" --stat
fi

Original prompt

Create a new pull request addressing the comments made in PR #110 (#110). Review the comments thoroughly and implement the necessary improvements or modifications based on the feedback.

This pull request was created from Copilot chat.

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Note

Enhances the sync-lexicons skill doc for clarity, robustness, and workflow accuracy.

• Adds a dedicated CHANGELOG review step and clarifies version/tag handling with OLD_TAG/NEW_TAG
• Improves error handling: dependency existence check, repo presence verification, and identical-version short‑circuit
• Documents variable persistence across steps and rationale for limited diff output (head -200)
• Expands user approval flow (approve/modify/cancel) and strengthens planning guidance (semantic versioning for changesets)
• Cleans up anti-patterns and DO/DON'T formatting; fixes constant name typo to HYPERCERT_LEXICONS

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Latest commit: c9edc2d

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[Copilot]

Pull request overview

This PR implements review feedback from PR #110, enhancing the sync-lexicons skill documentation with improved error handling, clearer git version management, better content organization, and various clarity improvements.

Changes:

• Added robust error handling with dependency and repository existence checks
• Improved git version handling with explicit tag variables and identical version edge case
• Fixed workflow step numbering and consolidated duplicate anti-pattern sections
• Enhanced clarity with semantic versioning guidance, expanded user approval flows, and corrected typo in constant name

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