刷新按钮支持数据同步：调用 /api/sync 拉取最新数据

- app.py 新增 /api/sync POST 接口：运行 fetch_data.py + migrate_to_mysql.py
- refreshShelf() 先调用 /api/sync 同步数据，再重新加载书架
- 按钮文案三阶段：同步中... → 加载中... → 刷新
- CSS 增加 min-width 防止按钮宽度抖动
- launchd plist 和 start_server.sh 均配置 WEREAD_API_KEY 环境变量

app.py

@@ -18,6 +18,7 @@
 
 import json
 import os
+import subprocess
 import time
 import urllib.request
 from datetime import datetime
@@ -1183,6 +1184,79 @@ def api_search(conn):
     })
 
 
+# ======================================================================
+# 数据同步接口 — 从微信读书 API 拉取最新数据并迁移到 MySQL
+# ======================================================================
+
+@app.route("/api/sync", methods=["POST"])
+def sync_data():
+    """运行 fetch_data.py + migrate_to_mysql.py，全量同步数据"""
+    project_dir = os.path.dirname(os.path.abspath(__file__))
+    python_bin = os.path.join(
+        os.path.expanduser("~"),
+        ".workbuddy/binaries/python/envs/default/bin/python",
+    )
+    env = os.environ.copy()
+    env["WEREAD_API_KEY"] = env.get("WEREAD_API_KEY", "")
+    if not env["WEREAD_API_KEY"]:
+        return jsonify({"ok": False, "error": "WEREAD_API_KEY 未设置"}), 500
+
+    results = {"steps": []}
+    try:
+        # Step 1: 采集数据 → SQLite
+        r1 = subprocess.run(
+            [python_bin, "fetch_data.py"],
+            cwd=project_dir,
+            env=env,
+            capture_output=True,
+            text=True,
+            timeout=120,
+        )
+        results["steps"].append({
+            "name": "fetch_data",
+            "ok": r1.returncode == 0,
+            "stdout": r1.stdout[-500:] if r1.stdout else "",
+            "stderr": r1.stderr[-500:] if r1.stderr else "",
+        })
+        if r1.returncode != 0:
+            results["ok"] = False
+            results["error"] = "fetch_data.py 执行失败"
+            return jsonify(results), 500
+
+        # Step 2: SQLite → MySQL
+        r2 = subprocess.run(
+            [python_bin, "migrate_to_mysql.py"],
+            cwd=project_dir,
+            env=env,
+            capture_output=True,
+            text=True,
+            timeout=60,
+        )
+        results["steps"].append({
+            "name": "migrate_to_mysql",
+            "ok": r2.returncode == 0,
+            "stdout": r2.stdout[-500:] if r2.stdout else "",
+            "stderr": r2.stderr[-500:] if r2.stderr else "",
+        })
+        if r2.returncode != 0:
+            results["ok"] = False
+            results["error"] = "migrate_to_mysql.py 执行失败"
+            return jsonify(results), 500
+
+        results["ok"] = True
+        results["message"] = "数据同步完成"
+        return jsonify(results)
+
+    except subprocess.TimeoutExpired:
+        results["ok"] = False
+        results["error"] = "同步超时（超过120秒）"
+        return jsonify(results), 500
+    except Exception as e:
+        results["ok"] = False
+        results["error"] = str(e)
+        return jsonify(results), 500
+
+
 # ======================================================================
 # 启动入口
 # ======================================================================