feat: Web管理系统 + Docker支持

- 多账号管理（异步登录、状态轮询）
- 购物车预售商品同步（倒计时/定时开售）
- 定时抢购（自动刷新、SKU选择、重试机制）
- 账号隔离调度（同账号顺序、跨账号并行）
- Web面板（任务分组、实时倒计时、批量操作）
- Dockerfile + docker-compose

server/database.py

@@ -0,0 +1,59 @@
+import sqlite3
+import os
+from datetime import datetime
+
+DB_PATH = os.path.join(os.path.dirname(__file__), '..', 'data', 'snatcher.db')
+
+
+def get_db():
+    os.makedirs(os.path.dirname(DB_PATH), exist_ok=True)
+    conn = sqlite3.connect(DB_PATH)
+    conn.row_factory = sqlite3.Row
+    conn.execute("PRAGMA journal_mode=WAL")
+    return conn
+
+
+def init_db():
+    conn = get_db()
+    conn.executescript('''
+        CREATE TABLE IF NOT EXISTS accounts (
+            id INTEGER PRIMARY KEY AUTOINCREMENT,
+            name TEXT NOT NULL,
+            phone TEXT NOT NULL DEFAULT '',
+            password TEXT NOT NULL DEFAULT '',
+            auth_file TEXT NOT NULL,
+            is_logged_in INTEGER DEFAULT 0,
+            login_msg TEXT DEFAULT '',
+            created_at TEXT DEFAULT (datetime('now', 'localtime')),
+            updated_at TEXT DEFAULT (datetime('now', 'localtime'))
+        );
+
+        CREATE TABLE IF NOT EXISTS tasks (
+            id INTEGER PRIMARY KEY AUTOINCREMENT,
+            account_id INTEGER NOT NULL,
+            target_url TEXT NOT NULL,
+            item_name TEXT DEFAULT '',
+            item_id TEXT DEFAULT '',
+            sku_id TEXT DEFAULT '',
+            price TEXT DEFAULT '',
+            snatch_time TEXT NOT NULL,
+            status TEXT DEFAULT 'pending',
+            result TEXT DEFAULT '',
+            created_at TEXT DEFAULT (datetime('now', 'localtime')),
+            updated_at TEXT DEFAULT (datetime('now', 'localtime')),
+            FOREIGN KEY (account_id) REFERENCES accounts(id)
+        );
+
+        CREATE TABLE IF NOT EXISTS orders (
+            id INTEGER PRIMARY KEY AUTOINCREMENT,
+            task_id INTEGER NOT NULL,
+            account_id INTEGER NOT NULL,
+            status TEXT DEFAULT 'unknown',
+            detail TEXT DEFAULT '',
+            created_at TEXT DEFAULT (datetime('now', 'localtime')),
+            FOREIGN KEY (task_id) REFERENCES tasks(id),
+            FOREIGN KEY (account_id) REFERENCES accounts(id)
+        );
+    ''')
+    conn.commit()
+    conn.close()