Tags: jmu/tabnest

fix: integrate timeline-utils.js with background.js using ES modules

- background.js now imports tested functions from timeline-utils.js
- Added type: 'module' to manifest for ES module support
- All 24 unit tests pass
- Code is now consistent between tests and production

test: Achieve 100% code coverage (v1.0.8)

- Add tests for default parameters (now, timeThresholdMs)
- Coverage improved from 90% to 100% branch coverage
- 24 tests, all passing

Coverage Report:
- Statements: 100%
- Branch: 100%
- Functions: 100%
- Lines: 100%

test: Add unit tests for timeline grouping (v1.0.7)

- Extract core logic to timeline-utils.js for testing
- 22 unit tests covering:
  - formatTimeRange: today vs non-today formatting
  - groupByTimeline: date separation, time threshold, edge cases
  - Cross-midnight, cross-year, cross-month boundaries
  - Unsorted input handling
- All tests pass ✅

fix: Persist timeline data to storage (v1.0.6)

- Timeline data now persisted to chrome.storage.local
- Survives extension reloads and browser restarts
- Group by date first, then time within each date
- Better logging for debugging timeline issues

fix: Timeline grouping respects date boundaries (v1.0.5)

- Different days are now separated into different groups
- Include popup.css in package (fixed broken styles)
- Same-day tabs grouped by time threshold
- Cross-day boundary always breaks grouping

fix: Timeline grouping improvements (v1.0.4)

- Non-today groups show date (e.g., '3/12') instead of time range
- Today groups show time range (e.g., '09:00-09:05')
- Tabs within each group sorted by time (later on right)
- Groups sorted by time (later groups on right)

feat: Add timeline-based tab grouping (v1.0.3)

- Track tab creation time via tabTimeline Map
- Group tabs by time windows (configurable threshold)
- New 'Group by Timeline' button in popup
- Timeline threshold setting in options (default 5 min)
- Group names show time range (e.g., 14:00-14:25)
- Update README with timeline grouping documentation

Fix v1.0.2: Major bug fixes

- Fix: groupAllWindows now groups by window (Chrome groups must be in same window)
- Fix: Auto-group now uses onUpdated instead of onCreated for reliable URL access
- Fix: Ungroup tabs before creating new groups to avoid conflicts
- Fix: Check sendMessage response for success status
- Fix: Use originalContent for all button state restoration
- Improve: Added truncateTitle for long group names
- Improve: Better docs site detection with subdomain support
- Improve: Auto-group can now create new groups (not just join existing)

Fix: popup.js message handling and add groupAll action

- Fixed popup.js to use chrome.runtime.sendMessage correctly
- Added groupAll action handler in background.js
- Added console logging for debugging
- Added error alerts for better UX

Cleanup: remove workflow (will use manual release)