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/useTimeline.ts

@@ -1,7 +1,23 @@
 import { ref, computed, watch, type ComputedRef } from "vue";
 import { useQuery } from "@vue/apollo-composable";
 import { GetClientTimelineQueryDocument } from "~~/graphql/generated";
-import type { ClientTimelineItem } from "~/composables/crm-types";
+
+import type { CommItem } from "~/composables/useContacts";
+import type { CalendarEvent } from "~/composables/useCalendar";
+import type { FeedCard } from "~/composables/useFeed";
+import type { WorkspaceDocument } from "~/composables/useDocuments";
+
+export type ClientTimelineItem = {
+  id: string;
+  contactId: string;
+  contentType: "message" | "calendar_event" | "document" | "recommendation" | string;
+  contentId: string;
+  datetime: string;
+  message?: CommItem | null;
+  calendarEvent?: CalendarEvent | null;
+  recommendation?: FeedCard | null;
+  document?: WorkspaceDocument | null;
+};
 
 export function useTimeline(opts: { apolloAuthReady: ComputedRef<boolean> }) {
   const timelineContactId = ref("");