Verify create-issue agent skill workflow

## Development Task

This is a test issue to verify the `create-issue` agent skill works correctly end-to-end.

**Context:** PR https://github.com/tikv/pd/pull/10431 adds a new `create-issue` skill under `.agents/skills/create-issue/`. This issue validates that:

- The skill correctly identifies the repo and authenticates via `gh`.
- Duplicate search runs before drafting.
- The correct template (`development-task`) is selected and its headings are preserved.
- Labels from the template frontmatter (`type/development`) are passed correctly.
- The issue is created successfully via `gh issue create --body-file`.

**Action:** Close this issue once verification is complete. It is a test artifact and carries no production impact.