add webui

config.example.ini

@@ -0,0 +1,22 @@
+# HPGL Plotter – example config
+# Copy to config.ini and adjust. config.ini is gitignored.
+
+[plotter]
+# Serial port (e.g. /dev/ttyUSB0 on Linux, COM3 on Windows)
+port = /dev/ttyUSB0
+# Baud rate (often 9600 for HPGL plotters)
+baudrate = 9600
+# Timeout in seconds when reading from plotter
+timeout = 15
+# Center program at origin before sending (True) or align to bottom-left (False)
+center_at_origin = false
+
+[webui]
+# Host to bind (0.0.0.0 = all interfaces, for access from other devices)
+host = 0.0.0.0
+# Port for the web UI
+port = 5000
+# Max upload size in bytes (default 16 MB)
+max_upload_mb = 16
+# Secret key for Flask sessions; set a random string in production
+secret_key = change-me-in-production