P4: 基础设施 - api 层/布局壳/公共组件（Markdown/Captcha/音乐嵌入）

frontend/src/api/passwords.js

@@ -0,0 +1,30 @@
+import { request } from './client.js';
+
+// ── PIN / 解锁 ──────────────────────────────────
+export function pinStatus() {
+  return request('/passwords/pin-status');
+}
+export function setPin(pin) {
+  return request('/passwords/set-pin', { method: 'POST', body: { pin } });
+}
+export function unlock(pin) {
+  return request('/passwords/unlock', { method: 'POST', body: { pin } });
+}
+export function lock() {
+  return request('/passwords/lock', { method: 'POST' });
+}
+
+// ── 密码条目（需已解锁） ───────────────────────
+export function listEntries() {
+  return request('/passwords');
+}
+/** data = { title, username?, password, url?, notes? } */
+export function createEntry(data) {
+  return request('/passwords', { method: 'POST', body: data });
+}
+export function updateEntry(id, data) {
+  return request('/passwords/' + id, { method: 'PUT', body: data });
+}
+export function deleteEntry(id) {
+  return request('/passwords/' + id, { method: 'DELETE' });
+}