feat(phase-1): implement Foundation & Kiosk UI

- Add Flask backend with SocketIO for real-time updates
- Implement sensor service with mock data generation
- Create Dashboard UI with rainfall, voltage, status displays
- Create Settings UI with station, network, ADC, sensor configuration
- Create Calibration UI with live ADC readings and rainfall reset
- Touch-optimized interface with 64px touch targets for 7" display

Implements: DASH-01 through DASH-09, UI-01 through UI-03,
SETT-01 through SETT-08, CAL-01 through CAL-04, BACK-01 through BACK-03

requirements.txt

@@ -0,0 +1,18 @@
+# TCKRTUIYO - Rainfall Station RTU Web Interface
+# Phase 1: Foundation & Kiosk UI
+
+# Web Framework
+Flask==3.1.0
+Flask-SocketIO==5.6.0
+
+# Async support for Flask-SocketIO
+eventlet==0.40.0
+
+# System monitoring
+psutil==6.1.0
+
+# Serial communication (for sensor hardware)
+pyserial==3.5
+
+# Settings storage
+python-dotenv==1.0.0