* fix(app): route workspace actions semantically
Separate Explorer visibility from view navigation, and give composer changes and pull request opens semantic routing owners. Unify diff destinations, keep compact PR navigation in Explorer, and derive maximize availability from visible workspace panes.
* test(app): cover composer changes routing
Update the browser journey for the Explorer-first composer action, then assert the second press follows the shared diff destination.
The Explorer pane rewrite routed semantic Changes and pull-request actions through ordinary workspace tabs on compact layouts. Centralize those actions so mobile and native dock layouts select the Explorer surface while desktop keeps its placement preferences.
* feat(app): replace empty panes with New tabs
Give every retained pane an independently identified New tab, replace it in place when a destination is chosen, and preserve split close and move invariants. Keep existing workspace startup and compact explorer routing explicit, with focused unit and browser regression coverage.
* test(app): count content tabs in subagent integration
* fix(app): preserve workspace shortcut ownership
* fix(app): keep file navigation in place
Retargeting a File tab allocated a new tab identity, causing the tab track to unmount and remount during navigation. Preserve the identity for File-to-File changes while retaining new instances for cross-kind replacements.
* feat(app): expand workspace panel actions
Keep the Command Center aligned with workspace tab and pane primitives. Add explicit panel placement, focused open behavior, keyboard navigation for empty panes, and a Changes pill that toggles the visible Side panel without closing its tab.
* feat(app): refine workspace pane actions
Prioritize Changes when available, keep Files useful before a selection, and reserve desktop diff clicks for selection so comments require the explicit affordance. Move the Changes shortcut to Shift+G to avoid consuming a likely copy variant.
* feat(app): improve access to workspace changes
Mohamed Boudra