feat: Add prolly-ui tool for interactive HTML visualization of git-prolly repositories

[zhangfengcdt]

This PR introduces prolly-ui, a new command-line tool that generates beautiful, interactive HTML
visualizations for git-prolly repositories. Users can explore commit history, view detailed
diffs, and switch between multiple datasets through a modern web interface.

Features Added

🎨 Interactive Web Visualization

• Modern, responsive UI with gradient backgrounds and smooth animations
• Git-style commit timeline with branch visualization
• Click-to-expand commit details with full diff display
• Color-coded change operations (green=added, orange=modified, red=removed)

📊 Multi-Dataset Support

• Dropdown selector to switch between different repositories
• Custom dataset naming via CLI arguments
• Independent commit histories per dataset

🔧 Command Line Interface

Single repository

./target/debug/prolly-ui path/to/repo -o dashboard.html

Multiple datasets

./target/debug/prolly-ui main/repo
-d "Users:data/users"
-d "Products:data/products"
-o multi-dashboard.html

✨ Rich Commit Details

• Full commit hash, author, message, and timestamp
• Human-readable key-value changes with before/after comparison
• Proper handling of byte array data conversion to strings

Implementation Details

New Files:

• src/bin/prolly-ui.rs (886 lines) - Main CLI tool implementation
• Updated Cargo.toml with new binary configuration

Architecture:

• Repository data extraction using existing git-prolly APIs
• Self-contained HTML generation with embedded CSS/JavaScript
• Single-script JavaScript architecture for proper variable scoping
• Efficient data serialization for client-side interactivity

Key Components:

• process_repository() - Extracts commit history and changes from git-prolly repos
• generate_html() - Creates complete HTML with embedded styles and scripts
• serialize_changes() - Converts Rust KvDiff structs to JavaScript-compatible JSON
• Modern CSS with flexbox layouts and smooth transitions

Usage

Usage: prolly-ui [OPTIONS] [REPO_PATH]

Arguments:
[REPO_PATH] Repository path (defaults to current directory)

Options:
-o, --output Output HTML file [default: prolly-ui.html]
-d, --dataset NAME:PATH Include additional repositories for dataset switching
-h, --help Print help
-V, --version Print version

Testing

• Tested with single and multi-dataset repositories
• Verified commit click functionality and diff display
• Confirmed responsive design and cross-browser compatibility
• All JavaScript errors debugged and resolved

This tool provides an intuitive way to explore and understand git-prolly repository history
through a visual, web-based interface that requires no external dependencies or web server.

[zhangfengcdt]