build: add .claude/skills for updating llgo version

[xgopilot]

Requested by @luoliwoshang

Summary

• Added .claude/skills/update-llgo-version.md — a Claude skill file that documents the complete process for bumping the github.com/goplus/llgo dependency version

What this skill covers

The skill provides step-by-step instructions to update all files that reference the llgo version:

• go.mod — Go module dependency
• go.sum — checksums (via go mod tidy)
• .github/workflows/go.yml — CI matrix version
• .github/workflows/end2end.yml — CI matrix version
• .github/workflows/gentest.yml — CI matrix version
• .github/actions/setup-llcppg/action.yml — default version for the setup action

It also includes verification steps and commit message conventions.

Test plan

• Skill file follows markdown format and is well-structured
• All files that need updating during an llgo version bump are listed

[luoliwoshang]

@xgopilot use the skill-creator skill!

[xgopilot]

Improved the skill file using skill-creator conventions

Applied the following improvements to .claude/skills/update-llgo-version.md:

1. Added YAML frontmatter — The skill now has name and description fields in the standard --- frontmatter block, which is how Claude discovers and triggers skills. The description is written to be "pushy" per skill-creator best practices, so it triggers on related phrases like "bump llgo" or "change llgo dependency".

2. Added go get workflow — Instead of manually editing go.mod, the skill now instructs to use go get github.com/goplus/llgo@<version> followed by go mod tidy. This is the idiomatic Go approach and correctly resolves transitive dependencies.

3. Added current-version detection step — Step 1 now explicitly says to read go.mod and note the current version before updating, so the commit message can include from <old> to <new>.

4. Consolidated workflow updates — The three CI workflow files are now listed together in a single step with a concise description, reducing repetition while keeping all files clearly identified.

5. Removed redundant sections — The "When to Use" and standalone "Description" sections were folded into the frontmatter description field where Claude actually reads them for triggering.

6. Added explanatory context — Each step now briefly explains why the approach is preferred (e.g., why go get over manual editing), following the skill-creator principle of explaining the "why" rather than just the "what".

View job run

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 83.32%. Comparing base (b7259eb) to head (6dd5f3b).

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #672   +/-   ##
=======================================
  Coverage   83.32%   83.32%           
=======================================
  Files          28       28           
  Lines        2500     2500           
=======================================
  Hits         2083     2083           
  Misses        369      369           
  Partials       48       48           

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