WiFiManager

Provides a browser interface for users to select and enter WiFi credentials without modifying source code, as shown in the web server feature for easy setup.

Saves network names and passwords in a 'wifi.dat' CSV file, allowing devices to reconnect automatically after reboots without hardcoded credentials.

First attempts to connect to saved networks, then falls back to configuration mode if none work, ensuring connectivity without manual intervention per the logic steps.

Just upload main.py and wifimgr.py, and user code runs after WiFi connection is established, making it straightforward to adopt as per the usage instructions.