feat(core): update backend coordinator, docgov lease, squad workflow and web governance integration

web/src/api/docgov.ts

@@ -0,0 +1,48 @@
+/** 受控文档正文保存与编辑租约 API */
+
+const API_BASE = '';
+
+export interface SaveDocumentContentPayload {
+  doc_id: string;
+  user_id: number;
+  user_name: string;
+  user_role: string;
+  markdown_body: string;
+  expected_sha256?: string;
+  work_dir?: string;
+}
+
+export async function saveDocumentContent(payload: SaveDocumentContentPayload): Promise<{
+  content_sha256: string;
+  doc?: {
+    lease_holder_type?: string;
+    lease_holder_id?: string;
+    lease_expires_at?: string;
+    content_sha256?: string;
+  };
+}> {
+  const resp = await fetch(`${API_BASE}/api/v1/docgov/content`, {
+    method: 'POST',
+    headers: { 'Content-Type': 'application/json' },
+    body: JSON.stringify(payload),
+  });
+  if (!resp.ok) {
+    const text = await resp.text();
+    throw new Error(text || `save content failed: ${resp.status}`);
+  }
+  return resp.json();
+}
+
+export function mapLeaseToAstEditLease(doc: {
+  lease_holder_type?: string;
+  lease_holder_id?: string;
+  lease_expires_at?: string;
+}): { holderType?: 'squad' | 'human' | ''; holderId?: string; expiresAt?: string } | undefined {
+  if (!doc?.lease_holder_type) return undefined;
+  const holderType = doc.lease_holder_type as 'squad' | 'human' | '';
+  return {
+    holderType,
+    holderId: doc.lease_holder_id,
+    expiresAt: doc.lease_expires_at,
+  };
+}