Fixed
- Collection group order now follows the actual browser tab-group order more reliably.
- Live groups can now be dragged onto closed groups to place them there directly.

Changed
- Group deletion now always asks for confirmation, with clearer wording for open and closed groups.
- Auto-created collections now follow the first group's name more naturally until the collection is clearly established.

Fixed
- New browser-created groups only inherit a neighboring collection when grouped tabs are directly adjacent in tab order.
- Ungrouped tabs now break collection inheritance for new groups instead of letting them join the nearest collection anyway.
- New browser-created groups no longer inherit the Uncategorized bucket.
- Canceled native Firefox group creation is cleaned up more reliably instead of leaving behind draft collections.

Added
- Group delete menu with separate "Remove from Collection" and permanent delete actions.

Changed
- Sidebar and quick popup now follow Firefox light and dark content appearance.
- New collections ask for a name immediately instead of being created unnamed first.
- Popup panel control now toggles between opening and closing the side panel for the current window.
- Collection actions now switch between Open, Go to, and Close based on whether a collection is closed, partly open, or fully open, and Close only shuts the currently open groups.
- Refreshed collection and group action icons and hover states for clearer controls.
- Collection cards now highlight open and partly open state instead of the transient current-tab state.

Fixed
- Restored or newly reopened groups now join the current window collection context more reliably.

Added
- Automated AMO release workflow for tagged versions, with release notes extracted from this changelog.
- Firefox end-to-end smoke test coverage for the packaged extension.
- Unit tests for shared collection and group logic.

Changed
- Moved extension runtime files into src/ while keeping the project builder-free.
- Extracted shared collection and group helpers into src/shared.js for reuse across background and UI code.

Fixed
- Quick popup no longer shows the Uncategorized bucket.
- Popup Open Panel button can be hidden when the sidebar is already open for the current window.