Refactor code structure for improved readability and maintainability

src/handlers/setup.ts

@@ -1,31 +1,6 @@
-import { Env, DEFAULT_DEV_SECRET } from '../types';
+import { Env } from '../types';
 import { StorageService } from '../services/storage';
-import { jsonResponse, htmlResponse } from '../utils/response';
-import { renderRegisterPageHTML } from '../setup/pageTemplate';
-import { LIMITS } from '../config/limits';
-
-type JwtSecretState = 'missing' | 'default' | 'too_short';
-
-function getJwtSecretState(env: Env): JwtSecretState | null {
-  const secret = (env.JWT_SECRET || '').trim();
-  if (!secret) return 'missing';
-  // Block common "forgot to change" sample value (matches .dev.vars.example)
-  if (secret === DEFAULT_DEV_SECRET) return 'default';
-  if (secret.length < LIMITS.auth.jwtSecretMinLength) return 'too_short';
-  return null;
-}
-
-async function handleRegisterPage(request: Request, env: Env, jwtState: JwtSecretState | null): Promise<Response> {
-  void request;
-  void env;
-  return htmlResponse(renderRegisterPageHTML(jwtState));
-}
-
-// GET / - Setup page
-export async function handleSetupPage(request: Request, env: Env): Promise<Response> {
-  const jwtState = getJwtSecretState(env);
-  return handleRegisterPage(request, env, jwtState);
-}
+import { jsonResponse } from '../utils/response';
 
 // GET /setup/status
 export async function handleSetupStatus(request: Request, env: Env): Promise<Response> {

src/router.ts

@@ -48,7 +48,7 @@ import {
 import { handleSync } from './handlers/sync';
 
 // Setup handlers
-import { handleSetupPage, handleSetupStatus } from './handlers/setup';
+import { handleSetupStatus } from './handlers/setup';
 import { handleWebClientPage } from './handlers/web';
 import { handleKnownDevice, handleGetDevices, handleUpdateDeviceToken } from './handlers/devices';
 
@@ -187,15 +187,10 @@ export async function handleRequest(request: Request, env: Env): Promise<Respons
   try {
 
     // Web client entry (single-path app)
-    if ((path === '/' || path === '/register' || path === '/login') && method === 'GET') {
+    if ((path === '/' || path === '/register' || path === '/login' || path === '/setup' || path === '/setup/legacy') && method === 'GET') {
       return handleWebClientPage(request, env);
     }
 
-    // Legacy setup page
-    if ((path === '/setup' || path === '/setup/legacy') && method === 'GET') {
-      return handleSetupPage(request, env);
-    }
-
     // Setup status
     if (path === '/setup/status' && method === 'GET') {
       return handleSetupStatus(request, env);