v1.0.1 - Clean Tree Handling & Staging Guards

Changes in v1.0.1

• Clean Working Tree Detection: Diffnote now detects when the working tree is clean before drafting commits, showing status and next steps rather than attempting an empty commit.
• Staging Verification: Checks whether staged changes actually exist before invoking Git commit, preventing 'nothing to commit' errors.
• Smart Push on Clean Repos: Running diffnote push with a clean tree checks if commits are ahead of remote and pushes them directly.
• New Flags: Added --amend, --recent, and --allow-empty support.