feat: migrate legacy projects through binding search

hub/src/projectOnboarding.ts

@@ -27,6 +27,8 @@ export interface CreateOrgAdminProjectInput {
   readonly workspaceRoot: string;
   readonly folderId?: string | undefined;
   readonly sortKey?: string | undefined;
+  /** Stable internal identifier for resumable imports; ordinary callers must omit it. */
+  readonly projectId?: string | undefined;
 }
 
 export interface CreateFeishuChatProjectInput {
@@ -147,6 +149,7 @@ export async function createProjectFromOrgAdmin(
     workspaceRoot: input.workspaceRoot,
     folderId: input.folderId,
     sortKey: input.sortKey,
+    projectId: input.projectId,
     chatId: undefined,
   });
 }
@@ -291,6 +294,7 @@ async function createManagedProject(
     readonly workspaceRoot: string;
     readonly folderId: string | undefined;
     readonly sortKey?: string | undefined;
+    readonly projectId?: string | undefined;
     readonly chatId: string | undefined;
   },
 ): Promise<ProjectOnboardingResult> {
@@ -301,7 +305,7 @@ async function createManagedProject(
   if (organization === null) throw new Error(`organization not found: ${input.organizationId}`);
   requireActiveOrganizationStatus(organization.id, organization.status);
 
-  const projectId = createProjectId();
+  const projectId = input.projectId ?? createProjectId();
   const workspaceDir = projectWorkspaceDir({
     workspaceRoot: input.workspaceRoot,
     organizationSlug: organization.slug,