refactor: 新增 ui.js 和 main.js 模組，啟用 ES6 Modules

新增檔案：
- js/ui.js - UI 操作、模組切換、預覽更新、表單資料收集
- js/main.js - 主程式初始化、事件監聽器設置、快捷鍵

更新檔案：
- index.html - 引用 ES6 模組 (type="module")

功能：
✅ 模組切換功能
✅ 標籤頁切換
✅ 表單欄位監聽
✅ JSON 預覽更新
✅ 快捷鍵支援 (Ctrl+S, Ctrl+N)
✅ 用戶信息載入
✅ 登出功能

注意：
- 大部分 JavaScript 代碼仍在 HTML 中（約 2400 行）
- 已建立核心模組架構，便於後續逐步遷移
- 使用 ES6 Modules，需要通過 HTTP Server 運行

🤖 Generated with [Claude Code](https://claude.com/claude-code)

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

test_ollama.py

@@ -0,0 +1,70 @@
+"""
+Test Ollama API integration
+"""
+import requests
+import json
+import urllib3
+
+# Disable SSL warnings
+urllib3.disable_warnings(urllib3.exceptions.InsecureRequestWarning)
+
+API_URL = "https://ollama_pjapi.theaken.com"
+
+print("=" * 60)
+print("Testing Ollama API Connection")
+print("=" * 60)
+print()
+
+# Test 1: List models
+print("Test 1: Listing available models...")
+try:
+    response = requests.get(f"{API_URL}/v1/models", timeout=10, verify=False)
+    print(f"Status Code: {response.status_code}")
+
+    if response.status_code == 200:
+        data = response.json()
+        models = data.get('data', [])
+        print(f"Found {len(models)} models:")
+        for model in models[:5]:
+            print(f"  - {model.get('id', 'Unknown')}")
+    else:
+        print(f"Error: {response.text}")
+except Exception as e:
+    print(f"Error: {str(e)}")
+
+print()
+
+# Test 2: Chat completion
+print("Test 2: Testing chat completion...")
+try:
+    chat_request = {
+        "model": "qwen2.5:3b",
+        "messages": [
+            {"role": "system", "content": "You are a helpful assistant."},
+            {"role": "user", "content": "Say hello in Chinese."}
+        ],
+        "temperature": 0.7,
+        "max_tokens": 50
+    }
+
+    response = requests.post(
+        f"{API_URL}/v1/chat/completions",
+        json=chat_request,
+        headers={'Content-Type': 'application/json'},
+        timeout=60,
+        verify=False
+    )
+
+    print(f"Status Code: {response.status_code}")
+
+    if response.status_code == 200:
+        result = response.json()
+        text = result['choices'][0]['message']['content']
+        print(f"Response: {text}")
+    else:
+        print(f"Error: {response.text}")
+except Exception as e:
+    print(f"Error: {str(e)}")
+
+print()
+print("=" * 60)