New Features
- Advanced String Formatting: Regex capture groups in replacement templates now support dot-notation method chains (upper, lower, trim, capitalize, title, replace, limit, slice) with chaining and graceful fallback behavior for syntax errors or unknown methods.

Documentation
- Added comprehensive guides and examples for advanced formatting capabilities.

Tests
- Expanded unit test coverage for advanced formatting features.

🚀 What's New in v1.2.0

• Enhanced Import Modes: When loading rules from a file, you can now choose between Append (add new rules to your current list) or Replace (completely overwrite your current setup).
• Smart Deduplication: The import engine now automatically detects and skips identical rules, keeping your list clean and preventing accidental duplicates.
• Dynamic Icon Coloring: Added support and documentation for Firefox's svg.context-properties preference. When enabled, the Title Tamer toolbar icon will dynamically adjust its color to perfectly match your browser theme's text and icons.
• Universal Dark Mode: Full theme parity is now achieved across all parts of the extension. Whether you are managing rules, importing data, or reading the documentation, the UI will correctly respect your Light, Dark, or System theme preferences.
• Theme-Aware Favicon: Internal pages now feature a dynamic favicon that adapts to your theme, making it easier to identify Title Tamer tabs at a glance.
• Major Performance Optimization: We've completely restructured the extension's internals, reducing the installation package size by nearly 90% (from ~680KB down to ~80KB) for a faster, leaner experience.
• Accessibility & UX Improvements: Added better ARIA labeling for screen readers, refined keyboard navigation (including Escape-to-close for modals), and fixed several UI layout issues for a smoother experience on all screen sizes.

What's New

🛡️ Zero-Flicker Guardian:
* New in-page MutationObserver instantly re-asserts titles to prevent websites from "fighting back" (fixes flickering on YouTube, Costco, etc.).

🛠️ Developer Tools:
* Added a toggleable diagnostic logging engine in Options to help troubleshoot complex URL matching and sync behavior.

🚀 Structural Hardening:
* Atomic Persistence: Modified-tab records are now only saved after a successful injection, preventing internal state drift.
* Unified Logic: Waking tabs now receive the same robust guard treatment as active tabs.
* Auto-Cleanup: Explicit guard teardown during navigations prevents lingering observers.

✨ Expanded Support:
* Support for view-source: and Firefox Reader Mode (about:reader) URLs.

New Features

• Added rule grouping with cascading enable/disable, rename, and delete functionality
• Drag-and-drop reordering for rules and groups
• Enhanced discard management with custom delays and intelligent recovery after reload/restart
• Improved tab synchronization with concurrency control

Improvements

• Redesigned UI with custom dropdowns and native dialog modals
• Better state persistence and recovery mechanisms across browser sessions
• Updated documentation with features and limitations

Improvements and fixes:

• URL decoding: Added support for decoding percent-encoded characters in URLs before matching (Issue #7).
• Display handling: Implemented HTML escaping so special characters in patterns and titles render correctly instead of being interpreted as HTML.
• Title sanitization: Improved document.title handling using JSON serialization to prevent corruption from special characters.
• Infrastructure: Added Node.js toolchain, unit tests, and GitHub Actions CI/CD.
• Project organization: Restructured the project to group source files under the src/ directory.

Fixed issue when dealing with dark mode and addon icon under certain conditions. (https://github.com/irvinm/Title-Tamer/issues/5)

Fixed issue when editing rules that some buttons showed thru the header of the table.