Confirmation Loop With Diff Preview And Message Review

[Use ChatGPT to generate PPT automatically, all in one single file](https://github.com/williamfzc/chat-gpt-ppt)

Unique: Implements a confirmation loop that displays both the generated message and the staged diff in a single interactive prompt, allowing users to verify message accuracy against actual changes before committing. The loop supports regeneration without re-staging, reducing friction for users dissatisfied with initial suggestions.

vs others: More transparent than fully automated commit generation (e.g., Husky hooks) by showing the message and diff together, and more flexible than read-only review by allowing regeneration without manual editing.