- Modify user message to reference new pattern in system prompt
- Revise Go test prompt for exact unit/live structure matching scaffold_test.go
- Update testgen_test.go to match new prompt prefix
- Implement `grokkit testgen` for Go/Python/C/C++ files
- Add language-specific prompts and test file conventions
- Include backups, previews, auto-apply flag
- Update README with docs and examples
- Add unit tests for helper functions
- Mark todo as completed