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/provider-request-domain.ts

@@ -0,0 +1,47 @@
+import type { ProviderExecutionMode } from "./provider-policy-domain";
+
+export const PROVIDER_REQUEST_STATE = {
+  PENDING: "pending",
+  STREAMING: "streaming",
+  SUCCEEDED: "succeeded",
+  FAILED: "failed",
+  CANCELLED: "cancelled",
+} as const;
+
+export type ProviderRequestState = typeof PROVIDER_REQUEST_STATE[keyof typeof PROVIDER_REQUEST_STATE];
+
+export interface ProviderRequestRecord {
+  id: string;
+  orgId: string;
+  providerId: string;
+  providerKey: string;
+  workspaceId: string | null;
+  model: string;
+  promptSha256: string;
+  responseText: string | null;
+  rawResponseJson: string | null;
+  state: ProviderRequestState;
+  errorMessage: string | null;
+  inputCharCount: number;
+  outputCharCount: number;
+  executionMode: ProviderExecutionMode;
+  policyDecision: string;
+  externalResponseId: string | null;
+  streamEventCount: number;
+  cancelledAt: string | null;
+  createdAt: string;
+  completedAt: string | null;
+}
+
+export interface ProviderStreamRendererEvent {
+  requestId: string;
+  providerId: string;
+  providerKey: string;
+  model: string;
+  streamEventType: "message_start" | "text_delta" | "message_stop" | "error";
+  textDelta: string | null;
+  responseText: string;
+  providerResponseId: string | null;
+  rawEventJson: string;
+  streamEventCount: number;
+}