* fix(publish): make git operations idempotent
- Check for staged changes before commit
- Check if tag exists before creating
- Check if release exists before creating
* fix(ast-grep): add validation for incomplete function declaration patterns
- Add validatePatternForCli function to detect incomplete patterns like
'export async function $METHOD' (missing params and body)
- Only validates JS/TS languages (javascript, typescript, tsx)
- Provides helpful error message with correct pattern examples
- Update tool description to clarify complete AST nodes required
This fixes the issue where incomplete patterns would fail silently
with no results instead of providing actionable feedback.
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