refactor: move credentials to .env and add python-dotenv support

Replace hardcoded database credentials, ntfy tokens, and Uptime Kuma
push URLs with environment variable lookups via python-dotenv.
Add .env.example template and update .gitignore to exclude .env.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

config/__init__.py

@@ -1,6 +1,9 @@
 # config/__init__.py
 # 统一配置导出接口
 
+from dotenv import load_dotenv
+load_dotenv()
+
 # 数据库配置
 from .database import SQL_SERVER_CONFIG, SQL_SERVER_CONN, DB_CONFIG, ACCESS_DRIVER
 

config/app_settings.py

@@ -19,9 +19,9 @@ LOG_TABLE_CONFIG = {
 # 从原 config.py 抽取
 NTFY_CONFIG = {
     'enabled': True,
-    'server_url': 'https://ntfy.server10086.icu',
-    'topic': 'bld',
-    'token': 'tk_eop5fs66acxtwxf6vlkiojhdvkgb0',
+    'server_url': os.environ.get('NTFY_SERVER_URL', ''),
+    'topic': os.environ.get('NTFY_TOPIC', ''),
+    'token': os.environ.get('NTFY_TOKEN', ''),
     'priority': {
         'error': 'high',
         'critical': 'urgent'
@@ -32,14 +32,14 @@ NTFY_CONFIG = {
 # 增量同步服务心跳
 UPTIME_KUMA_CONFIG = {
     'enabled': True,
-    'push_url': 'https://uptimekuma.server10086.icu/api/push/clMSgOQs4CJeF7DJAOiHaFaaZzoL8eB9',
+    'push_url': os.environ.get('UPTIME_KUMA_PUSH_URL', ''),
     'heartbeat_interval': 59  # 心跳间隔(秒)，需要与 Uptime Kuma 设置一致
 }
 
 # Excel 同步服务心跳
 EXCEL_SYNC_UPTIME_KUMA_CONFIG = {
     'enabled': True,
-    'push_url': 'https://uptimekuma.server10086.icu/api/push/MEXi5DYnC3nTMs2OfMqdelK3FawymtVY',
+    'push_url': os.environ.get('EXCEL_SYNC_UPTIME_KUMA_PUSH_URL', ''),
     'heartbeat_interval': 59  # 心跳间隔(秒)，需要与 Uptime Kuma 设置一致
 }
 

config/database.py

@@ -1,13 +1,15 @@
 # config/database.py
 # 统一的数据库配置
 
+import os
+
 # ================= SQL Server 配置 =================
 SQL_SERVER_CONFIG = {
-    'driver': 'ODBC Driver 18 for SQL Server',
-    'server': '192.168.110.114',
-    'database': 'CompanyDB',
-    'username': 'peng',
-    'password': 'Cqbld123456.',
+    'driver': os.environ.get('DB_DRIVER', 'ODBC Driver 18 for SQL Server'),
+    'server': os.environ.get('DB_SERVER', ''),
+    'database': os.environ.get('DB_DATABASE', ''),
+    'username': os.environ.get('DB_USERNAME', ''),
+    'password': os.environ.get('DB_PASSWORD', ''),
     'TrustServerCertificate': 'yes'
 }