Case work opens in its own workspace

Firm users now land in the workspace after login. Today, Portfolio, New Case, Settings, and Firm Copilot open as desktop apps instead of sending you back to separate pages.

Cases now open in their own workspace at /workspace/cases/:id. The firm workspace stays focused on cross-case work. Each case gets a dedicated canvas for matter-specific apps.

Overview opens by default with the case snapshot, phase progress, tasks, documents, and milestones. Phase details open on click, so hover no longer interrupts the workspace.