Create Gromits

# Spec Sheet for `grit gromit` Command

## Overview
The `grit gromit` command is designed to capture a snapshot of the changes in the working directory, similar to `git commit`. This command will create a new "gromit" in the Grit project history.

## Goals
- Provide a familiar and intuitive interface for users transitioning from Git.
- Ensure reliable and efficient capturing of project snapshots.
- Allow for detailed logging of changes with messages and metadata.

## Non-Goals
- Introducing complex new features not present in `git commit`.

## Features
- **Commit Message**: Allow users to provide a commit message describing the changes.
- **Staging Area**: Only commit changes that have been added to the staging area.
- **Author Information**: Automatically include author information in the gromit.
- **Timestamp**: Include the current date and time in the gromit.
- **Unique Identifier**: Generate a unique identifier (hash) for each gromit.

## Command-Line Interface
- `grit gromit`: Commits the changes in the staging area with a generated message.
- `grit gromit -m "message"`: Commits the changes with the specified message.
- `grit gromit --amend`: Amend the previous gromit with the current staging area changes.
- `grit gromit --help`: Displays help information about the `grit gromit` command.

## Output
- Confirmation message indicating that the gromit has been successfully created.
- Summary of changes included in the gromit.
- Unique identifier (hash) of the new gromit.

## Error Handling
- Error if there are no changes in the staging area.
- Error if no commit message is provided (unless using a default message).
- Generic error message for any unexpected issues.

## Documentation
- Provide clear and concise documentation on how to use `grit gromit`, including examples.
- Document the differences and similarities between `grit gromit` and `git commit`.

## Testing
- Unit tests to cover different gromit scenarios and command-line options.
- Integration tests to ensure that the command works as expected in a real-world scenario.

## Future Considerations
- Interactive mode for building commit messages.
- Integration with external tools for commit message linting.

## Head Canon
The term "gromit" is a playful nod to the beloved animated character Gromit from Wallace and Gromit. Just as Gromit is the reliable and silent partner who helps Wallace navigate through adventures and fixes mishaps, `grit gromit` aims to be the reliable tool that captures and safeguards the progress of your project. Additionally, the physical grommet is a device used to reinforce holes in fabric, providing stability and protection. Similarly, `grit gromit` reinforces the stability of your project by securely capturing snapshots of your progress, ensuring that nothing is lost and everything is held together securely.

Start by locating the CLI entry point for `grit gromit` and reviewing how existing commands handle arguments, staging, and output. Use the listed command-line options, error cases, metadata requirements, and testing goals as the acceptance criteria; done means staged changes can be captured with the specified message, author, timestamp, identifier, and amend behavior.

Written by the indexing model from the issue text.