* 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.
Mohamed Boudra