Show an error for missing project paths (#1490)

* Fix missing project paths flashing in the sidebar

* Log project lifecycle changes

* Address project picker review feedback

* Show project picker transport errors

* Inject session filesystem for workspace tests

packages/server/src/server/session.workspaces.test.ts

@@ -512,6 +512,7 @@ function createSessionForWorkspaceTests(
         archive: async () => {},
         remove: async () => {},
       },
+      filesystem: { isDirectory: async () => true },
       chatService: asChatService(),
       scheduleService: asScheduleService(),
       loopService: asLoopService(),