fix(workspace): don't auto-open repo when switching to Management view

When switching workspaces, skip calling openRepo if the current activeView
is "management". Previously a session.activePath would be opened even
when the user was on the Management/dashboard view, causing an unwanted
navigate-away. Now a keepDashboard flag prevents openRepo from running
in that case, preserving the dashboard state.

src/App.svelte

@@ -1697,6 +1697,7 @@
 
   async function switchWorkspace(id: string) {
     if (isBusy || id === workspaceState.selectedId) return;
+    const keepDashboard = activeView === "management";
     persistWorkspaces();
     repoOpenRequestId += 1;
     closeRepoTabContextMenu();
@@ -1706,7 +1707,7 @@
     repoTabs = session.openPaths.map(path => repoRowFromPath(path));
     activeView = "management";
     persistRepoLists();
-    if (session.activePath) await openRepo(session.activePath);
+    if (!keepDashboard && session.activePath) await openRepo(session.activePath);
   }
 
   async function saveWorkspace(id: string, name: string, repositories: string[]) {