refactor: distribute types from crm-types.ts to owning composables

Each composable now owns its types and exports them. Other composables
import types from the owning composable. Deleted centralized crm-types.ts.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

frontend/app/composables/useWorkspaceRouting.ts

@@ -1,6 +1,15 @@
 import { ref, type Ref, type ComputedRef } from "vue";
-import type { TabId, CalendarView, PeopleLeftMode, CalendarEvent, PilotChangeItem } from "~/composables/crm-types";
-import { safeTrim, dayKey } from "~/composables/crm-types";
+
+import type { CommItem } from "~/composables/useContacts";
+import type { CalendarView, CalendarEvent } from "~/composables/useCalendar";
+import { dayKey } from "~/composables/useCalendar";
+import type { PilotChangeItem } from "~/composables/usePilotChat";
+
+export type TabId = "communications" | "documents";
+
+export type PeopleLeftMode = "contacts" | "calendar";
+
+function safeTrim(value: unknown) { return String(value ?? "").trim(); }
 
 export function useWorkspaceRouting(opts: {
   selectedTab: Ref<TabId>;