fix: enable WASM-first auth flow for dashboard

Key changes:
- Add @rendermode InteractiveWebAssembly to Dashboard.razor
  (CLAUDE.md mandates Interactive WebAssembly as default)
- Reorder MapRazorComponents: WebAssembly first, then Server
- Simplify login.html: just redirect after 2s (no fetch verification)

Root cause of 302 redirect loop:
- Dashboard was rendering server-side (no @rendermode specified)
- Server-side rendering can't access localStorage
- CustomAuthenticationStateProvider read empty token
- Dashboard redirected to /login
- Result: 302 loop

Solution: Force client-side WASM rendering so:
1. Blazor WASM loads in browser
2. CustomAuthenticationStateProvider accesses localStorage
3. Token is read from localStorage
4. /api/auth/me validates token
5. User is authenticated
6. Dashboard displays

Co-Authored-By: Claude Haiku 4.5 <noreply@anthropic.com>

direct-test.mjs

@@ -0,0 +1,127 @@
+import { chromium } from "@playwright/test";
+
+(async () => {
+  console.log("════════════════════════════════════════════════════════");
+  console.log("             🔐 COMPLETE LOGIN FLOW TEST");
+  console.log("════════════════════════════════════════════════════════\n");
+  
+  const b = await chromium.launch({ headless: false });
+  const p = await b.newPage();
+  
+  // 모든 콘솔 로그 캡처
+  const consoleLogs = [];
+  p.on("console", msg => {
+    const text = msg.text();
+    consoleLogs.push(text);
+    if (text.includes("[Login]") || text.includes("[Dashboard]") || text.includes("[Auth]")) {
+      console.log(`  📝 ${text}`);
+    }
+  });
+  
+  // 요청/응답 모니터링
+  p.on("response", res => {
+    if (res.url().includes("auth") || res.url().includes("dashboard")) {
+      console.log(`  📡 ${res.status()} ${res.url().split('/').pop()}`);
+    }
+  });
+  
+  try {
+    // 서버 준비 확인
+    let serverReady = false;
+    for (let attempt = 0; attempt < 5; attempt++) {
+      try {
+        const resp = await fetch("http://localhost:5265/login.html");
+        if (resp.ok) {
+          serverReady = true;
+          break;
+        }
+      } catch (e) {}
+      console.log(`  [대기] 서버 시작 확인 중... (${attempt + 1}/5)`);
+      await new Promise(r => setTimeout(r, 5000));
+    }
+    
+    if (!serverReady) {
+      console.log("  ❌ 서버가 시작되지 않음");
+      await b.close();
+      return;
+    }
+    
+    console.log("\n✅ 서버 준비 완료!\n");
+    
+    // STEP 1: 로그인 페이지 로드
+    console.log("1️⃣  로그인 페이지 로드");
+    await p.goto("http://localhost:5265/login.html", { waitUntil: "networkidle" });
+    console.log("   ✓ 페이지 로드됨\n");
+    
+    // STEP 2: 폼 입력
+    console.log("2️⃣  로그인 폼 입력 (admin/admin)");
+    await p.fill("input[name='username']", "admin");
+    await p.fill("input[name='password']", "admin");
+    console.log("   ✓ 입력 완료\n");
+    
+    // STEP 3: 로그인 제출
+    console.log("3️⃣  로그인 버튼 클릭");
+    await p.click("button[type='submit']");
+    console.log("   ✓ 클릭됨\n");
+    
+    // STEP 4: 상태 모니터링 (10초)
+    console.log("4️⃣  로그인 처리 모니터링 (10초):");
+    let redirected = false;
+    for (let i = 1; i <= 10; i++) {
+      await new Promise(r => setTimeout(r, 1000));
+      const url = p.url();
+      const title = await p.title();
+      
+      process.stdout.write(`   [${i}s] URL: ${url}`);
+      
+      if (!url.includes("login")) {
+        console.log(" ✅ REDIRECTED!");
+        redirected = true;
+        break;
+      } else {
+        console.log("");
+      }
+    }
+    
+    console.log("\n5️⃣  최종 상태:");
+    const finalUrl = p.url();
+    const finalTitle = await p.title();
+    
+    console.log(`   📍 URL: ${finalUrl}`);
+    console.log(`   📄 Page Title: ${finalTitle}`);
+    
+    if (finalUrl.includes("/dashboard")) {
+      console.log("   ✅ 대시보드 URL 확인됨!");
+      
+      const content = await p.content();
+      if (content.includes("관리자 대시보드")) {
+        console.log("   ✅ 대시보드 콘텐츠 확인됨!");
+        console.log("\n🎉 로그인 성공! 대시보드 정상 로드!\n");
+      } else if (content.includes("Not Found")) {
+        console.log("   ❌ Not Found 에러");
+      } else {
+        console.log("   ⚠️  대시보드 콘텐츠 미확인");
+      }
+    } else if (finalUrl.includes("/login")) {
+      console.log("   ❌ 다시 로그인 페이지로 리다이렉트됨");
+      console.log("   → 대시보드 인증 체크에서 실패한 것 같습니다");
+    } else if (finalUrl.includes("/not-found")) {
+      console.log("   ❌ /not-found 에러");
+    } else {
+      console.log("   ⚠️  예상치 못한 페이지");
+    }
+    
+    // 스크린샷
+    await p.screenshot({ path: "./direct-test-result.png", fullPage: true });
+    console.log("   📷 스크린샷: direct-test-result.png");
+    
+    console.log("\n════════════════════════════════════════════════════════");
+    console.log("            테스트 완료");
+    console.log("════════════════════════════════════════════════════════");
+    
+  } catch (e) {
+    console.error("❌ 테스트 에러:", e.message);
+  } finally {
+    await b.close();
+  }
+})();