v1.5.0: Major Refactoring & Test Infrastructure

🎉 Major architectural improvements and quality assurance infrastructure!

Code Quality:

• ✅ Zero code duplication - Centralized constants and storage utilities
• 🧪 42 unit tests with 100% coverage of utility functions
• 🔒 Type-safe storage - Full TypeScript type safety for all storage operations
• 📦 Clean architecture - Organized, maintainable codebase

What Changed:

• Created src/constants.ts with all storage keys and defaults in one place
• Created src/storage.ts with typed helper functions
• Added Jest test infrastructure with comprehensive test coverage
• Moved popup.html to src/ directory for consistency
• Added pre-commit hooks enforcing lint and test quality gates

Developer Experience:

• Tests catch regressions early
• Type safety prevents invalid values
• Easier to maintain and extend
• Professional codebase architecture

Bundle Size Impact:
Minimal increase (+630 bytes total) for significantly improved code quality.

Versioning Change:
Starting with v1.5.0, this project adopts semantic versioning. Going forward, versions will only be bumped on releases, not every commit.

User Impact:
None - all changes are internal improvements. The extension works exactly the same as v1.4.0.

v1.4.0: Cleaner Popup UI

Polish update: Removed debug clutter for a better user experience.

Improvements:

• 🧹 Removed debug textarea and copy button from popup
• ✨ Simplified tab reload flow
• 🎨 Cleaner, more professional interface
• ⚡ Faster reload operation with less visual clutter

Developer Impact:
Debug logging is still available via browser console (F12) when enabled through the popup checkbox.

This release makes the extension more user-friendly for everyday use.

v1.3.33: Configurable Breadcrumb Count

User-requested feature: Choose between 1 or 4 breadcrumbs!

New Features:

• ⚙️ Radio buttons in popup for mode selection
• 1️⃣ Single breadcrumb mode: Only shows active tab indicator (🟦)
• 4️⃣ Four breadcrumb mode: Full MRU trail (🟦🟩🟧🟥)
• 💾 Settings persist via chrome.storage.sync
• 🔄 Real-time updates when settings change
• 👁️ Visual indicators in popup showing what each mode looks like

Why This Matters:
Not everyone needs to see 4 indicators at all times. This release gives users flexibility to choose the UI that works best for them.

v1.3.0: MRU Breadcrumb Trail

Major feature: Added Most Recently Used tab tracking with color-coded breadcrumb trail.

New Features:

• 🔢 Tracks last 4 active tabs
• 🎨 Color-coded position indicators (🟦🟩🟧🟥)
• ⚙️ Background service worker for MRU management
• 🖥️ Popup UI for tab management and debugging

What's Changed:
This release transforms the extension from simple active tab highlighting to a full MRU (Most Recently Used) breadcrumb system, making it easy to navigate between your most recent tabs.

v1.1.0: Initial Release

First public release with basic tab highlighting functionality.

Features:

• Active tab indicator in title
• Single tab highlighting
• Works on all websites
• Simple, lightweight implementation

This is the initial release of Active Tab Highlighter.