Add goal, project, and workspace CRUD

Full-stack: IPC channels, command types, OrganizationService methods,
IPC handlers, preload bridge, desktop-api types, and UI dialogs on the
Work page. Users can now create goals and projects directly instead of
relying on the onboarding bootstrap.

AgentCompany-New/src/shared/ipc.ts

@@ -57,6 +57,9 @@ export const IPC_CHANNELS = {
   setLegalHoldState: "agentcompany:set-legal-hold-state",
   createRetentionFreeze: "agentcompany:create-retention-freeze",
   setRetentionFreezeState: "agentcompany:set-retention-freeze-state",
+  createGoal: "agentcompany:create-goal",
+  createProject: "agentcompany:create-project",
+  createWorkspace: "agentcompany:create-workspace",
   search: "agentcompany:search",
   rendererEvent: "agentcompany:renderer-event",
   windowMinimize: "agentcompany:window-minimize",