Promote AgentCompany-New to the repository root and retire the old app

The legacy application - its src, tests, landing site, promo assets, docs,
release tooling, CI workflows, and root configs - leaves the tree; it stays
reachable in history. Everything under AgentCompany-New moves up unchanged:
same package name, so the production userData/database path is untouched,
and e2e/build scripts already resolved paths relative to the project. The
developer cred.txt stays gitignored at its new location. Full verify:ci
passes from the new root.

src/shared/search-domain.ts

@@ -0,0 +1,25 @@
+export const SEARCH_ENTITY_TYPES = [
+  "employee",
+  "agent",
+  "task",
+  "goal",
+  "project",
+  "workspace",
+  "approval",
+  "chat_space",
+  "chat_message",
+  "file",
+  "provider",
+  "social_account",
+  "scheduled_post",
+] as const;
+
+export type SearchEntityType = (typeof SEARCH_ENTITY_TYPES)[number];
+
+export interface SearchResultRecord {
+  entityType: SearchEntityType;
+  entityId: string;
+  title: string;
+  preview: string;
+  facets: Record<string, string>;
+}