Small utility for suggesting git commit messages

This doesn't exist yet. But here are some ideas:

1. Write in go because it's portable and easy to work with
2. Pipe git diff --cached into an LLM and ask a few questions. For each question, ask the LLM to give a confidence score. Decide what to do next based on the scores.

• Is it possible this change is about multiple topics?
• If so, would you recommend splitting it into multiple commits?
• What is this change about?
• Come up with a first draft of your commit message.

3. Provide the last 10 commits

• Is this commit closely related to these previous commits?
• If so:
  • Does this commit look like it should be squashed with the previous commit?
  • Does this commit look like it should be squashed into an earlier commit?
  • If it shouldn't be squashed, should we change the commit message based on the relationship to the previous commits?

4. Provide output from a configured linter (optional)

• Look at these linter outputs. Do any of them look VERY important? Bias your answer toward saying "no".
• Do these linter outputs make you think we should change the commit message?

5. Provide the source of the modified files

• Do you see anything in these files that strongly suggests you should change the commit message?

6. Generate 5 options for the commit header

• User manually selects one of the 5

7. Generate 5 options for the commit body

• User manually selects one of the 5

8. Pipe the result into git commit --edit -m

Config:

• LLM model (only support local, start with ollama then maybe add llama.cpp)
  • Support two different models? A big and small one?
  • Support using a second model to check the first model's work?
• Optional stages:
  • Previous commits
  • Linter
    • Configure linter to use
  • File contents

Toy example of how this might work as a shell one-liner:

git commit --edit -m "$(echo "Write a conventional git commit message for the following diff. Your message should include a summary line at most 80 characters long. Then, skip a line and include as many lines as explanation as you feel are appropriate. ONLY OUTPUT THE COMMIT MESSAGE. $(git diff --cached)" | aichat)"