* fix(workspaces): show isolation without checkout delay
* fix(workspaces): trust hydrated project capability
* fix(workspaces): resolve branch before creation
* fix(workspaces): honor invalidated checkout status
* fix(workspaces): preserve isolation while projects load
* fix(workspaces): keep provisional project routes usable
Route-derived projects do not know their worktree capability. Represent that uncertainty at the placement boundary so remembered worktree intent survives hydration without disabling the New Workspace screen indefinitely.
