重构 JWKS 模块，新增 JWKS 管理器，优化密钥生成与管理逻辑，更新路由处理

src/routes-simple/routes/jwks.ts

@@ -0,0 +1,18 @@
+import { router } from '@/app.ts'
+import { manager } from '@/modules/jwks/index.ts'
+router.all('/api/convex/jwks.json', async (req, res) => {
+  const jwks = await manager.getJWKS()
+  res.setHeader('Content-Type', 'application/json');
+  res.end(JSON.stringify(jwks));
+})
+
+// rsync -avz kevisual:/root/kevisual/assistant-app/storage/jwks/ ./storage/jwks
+
+// router.all('/api/convex/sign', async (req, res) => {
+//   const payload = {
+//     sub: 'abc'
+//   };
+//   const token = await manager.sign(payload);
+//   res.setHeader('Content-Type', 'application/json');
+//   res.end(JSON.stringify({ token }));
+// });