重构: 切换存储至SQLite，启用INI配置与API Key校验

gasflux.ini.example

@@ -0,0 +1,36 @@
+[server]
+# Server configuration
+host = 0.0.0.0
+port = 5000
+debug = false
+base_url = http://localhost:5000
+
+[paths]
+# Directory paths (relative to project root or absolute)
+uploads = ./web_api_data/uploads
+outputs = ./web_api_data/outputs
+
+[limits]
+# File size and performance limits
+max_content_length = 104857600  # 100MB in bytes
+
+[logging]
+# Logging configuration
+level = INFO
+file = logs/gasflux_api.log
+
+[security]
+# API key and security settings
+admin_bootstrap_key =
+
+[cleanup]
+# Task cleanup settings
+task_cleanup_interval = 3600  # 1 hour in seconds
+max_task_age = 86400  # 24 hours in seconds
+janitor_dry_run = false
+
+[performance]
+# Performance tuning
+threads = 8
+connection_limit = 100
+channel_timeout = 300