docs: create roadmap (4 phases)

.planning/REQUIREMENTS.md

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+# Requirements: TCKRTUIYO - Rainfall Station RTU Web Interface
+
+**Defined:** 2026-03-12
+**Core Value:** Real-time rainfall and environmental sensor monitoring with automatic data transmission to myvscada server
+
+## v1 Requirements
+
+Requirements for initial release. Each maps to roadmap phases.
+
+### Dashboard
+
+- [ ] **DASH-01**: Display current rainfall readings (Today, Hourly, MAR Acc, Yearly Acc)
+- [ ] **DASH-02**: Display solar voltage reading
+- [ ] **DASH-03**: Display battery voltage with status indicator (HIGH/NORMAL/LOW)
+- [ ] **DASH-04**: Display current date and time (HH:MM:SS DD-MM-YYYY)
+- [ ] **DASH-05**: Display station ID
+- [ ] **DASH-06**: Display communication status (signal strength, connection status)
+- [ ] **DASH-07**: Display software version
+- [ ] **DASH-08**: Real-time updates (auto-refresh or Socket.IO)
+- [ ] **DASH-09**: Last updated timestamp indicator
+
+### User Interface
+
+- [ ] **UI-01**: Touch-optimized interface for 7" 1024x600 display
+- [ ] **UI-02**: Large touch targets (minimum 48px)
+- [ ] **UI-03**: Main menu navigation
+- [ ] **UI-04**: Responsive layout for remote HD access (1920x1080 on port 9090)
+- [ ] **UI-05**: Login/logout functionality
+
+### Settings
+
+- [ ] **SETT-01**: Station Info display and edit
+- [ ] **SETT-02**: Date/Time setting
+- [ ] **SETT-03**: Mobile network settings view/edit
+- [ ] **SETT-04**: ADC channel configuration (4 channels, types: 4-20mA, 0-10vDC)
+- [ ] **SETT-05**: Rainfall sensor settings (ID, thresholds)
+- [ ] **SETT-06**: Water level threshold settings
+- [ ] **SETT-07**: EVAP settings
+- [ ] **SETT-08**: Network settings (IP, subnet, gateway, DNS, MAC)
+- [ ] **SETT-09**: Protocol settings (FTP, SCP, SFTP, WebDAV server config)
+
+### Calibration
+
+- [ ] **CAL-01**: View live ADC readings (4 channels)
+- [ ] **CAL-02**: View current sensor readings with units
+- [ ] **CAL-03**: Reset rainfall counters
+- [ ] **CAL-04**: Display channel type, ADC value, datum, reading
+
+### File Management
+
+- [ ] **FILE-01**: List CSV files in flash memory
+- [ ] **FILE-02**: View CSV file contents
+- [ ] **FILE-03**: Navigate file list (scroll up/down)
+- [ ] **FILE-04**: Delete CSV files
+- [ ] **FILE-05**: Generate tidEDA formatted files
+
+### Backend
+
+- [ ] **BACK-01**: Flask backend running on Raspberry Pi
+- [ ] **BACK-02**: Sensor data API endpoints
+- [ ] **BACK-03**: Settings API (read/write)
+- [ ] **BACK-04**: File management API
+
+## v2 Requirements
+
+Deferred to future release. Tracked but not in current roadmap.
+
+### Historical Data
+
+- [ ] **HIST-01**: Historical rainfall graphs (daily, weekly, monthly)
+- [ ] **HIST-02**: Historical voltage graphs
+- [ ] **HIST-03**: Date range selection for historical view
+- [ ] **HIST-04**: Export data to CSV
+
+### Alerts & Notifications
+
+- [ ] **ALERT-01**: Configurable rainfall threshold alerts (Warning, Danger)
+- [ ] **ALERT-02**: Configurable water level threshold alerts
+- [ ] **ALERT-03**: Visual indicators for alert states
+- [ ] **ALERT-04**: SMS notification on threshold breach
+
+### Advanced Network
+
+- [ ] **NETW-01**: Automatic retry on transmission failure
+- [ ] **NETW-02**: Transmission queue status display
+- [ ] **NETW-03**: Manual trigger for immediate transmission
+- [ ] **NETW-04**: Transmission log/history
+
+### GPS Integration
+
+- [ ] **GPS-01**: Display GPS coordinates
+- [ ] **GPS-02**: Manual coordinate entry (backup to USB GPS)
+
+## Out of Scope
+
+Explicitly excluded. Documented to prevent scope creep.
+
+| Feature | Reason |
+|---------|--------|
+| Third-party cloud integration | Direct server connection only per requirements |
+| Mobile native apps | Web-first approach |
+| Multi-station dashboards | Server handles aggregation |
+| Real-time chat | Outside domain |
+| OAuth authentication | Simple session-based auth sufficient for local device |
+
+## Traceability
+
+Which phases cover which requirements. Updated during roadmap creation.
+
+| Requirement | Phase | Status |
+|-------------|-------|--------|
+| DASH-01 | Phase 1 | Pending |
+| DASH-02 | Phase 1 | Pending |
+| DASH-03 | Phase 1 | Pending |
+| DASH-04 | Phase 1 | Pending |
+| DASH-05 | Phase 1 | Pending |
+| DASH-06 | Phase 1 | Pending |
+| DASH-07 | Phase 1 | Pending |
+| DASH-08 | Phase 1 | Pending |
+| DASH-09 | Phase 1 | Pending |
+| UI-01 | Phase 1 | Pending |
+| UI-02 | Phase 1 | Pending |
+| UI-03 | Phase 1 | Pending |
+| UI-04 | Phase 4 | Pending |
+| UI-05 | Phase 4 | Pending |
+| SETT-01 | Phase 1 | Pending |
+| SETT-02 | Phase 1 | Pending |
+| SETT-03 | Phase 1 | Pending |
+| SETT-04 | Phase 1 | Pending |
+| SETT-05 | Phase 1 | Pending |
+| SETT-06 | Phase 1 | Pending |
+| SETT-07 | Phase 1 | Pending |
+| SETT-08 | Phase 1 | Pending |
+| SETT-09 | Phase 3 | Pending |
+| CAL-01 | Phase 1 | Pending |
+| CAL-02 | Phase 1 | Pending |
+| CAL-03 | Phase 1 | Pending |
+| CAL-04 | Phase 1 | Pending |
+| FILE-01 | Phase 2 | Pending |
+| FILE-02 | Phase 2 | Pending |
+| FILE-03 | Phase 2 | Pending |
+| FILE-04 | Phase 2 | Pending |
+| FILE-05 | Phase 2 | Pending |
+| BACK-01 | Phase 1 | Pending |
+| BACK-02 | Phase 1 | Pending |
+| BACK-03 | Phase 1 | Pending |
+| BACK-04 | Phase 2 | Pending |
+
+**Coverage:**
+- v1 requirements: 41 total
+- Mapped to phases: 41
+- Unmapped: 0 ✓
+
+---
+*Requirements defined: 2026-03-12*
+*Last updated: 2026-03-12 after initial definition*

.planning/ROADMAP.md

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+# Roadmap: TCKRTUIYO - Rainfall Station RTU Web Interface
+
+## Overview
+
+This roadmap delivers a complete rainfall monitoring system running on Raspberry Pi with a 7" touchscreen kiosk display and remote HD access. The journey progresses from core sensor-to-display functionality (Phase 1) through data persistence (Phase 2), network transmission (Phase 3), to full remote access (Phase 4).
+
+## Phases
+
+**Phase Numbering:**
+- Integer phases (1, 2, 3): Planned milestone work
+- Decimal phases (2.1, 2.2): Urgent insertions (marked with INSERTED)
+
+Decimal phases appear between their surrounding integers in numeric order.
+
+- [ ] **Phase 1: Foundation & Kiosk UI** - Core sensor display on 7" touchscreen (port 8080)
+- [ ] **Phase 2: Data Persistence & File Management** - CSV logging and file operations
+- [ ] **Phase 3: Network Transmission** - Data transmission to myvscada server
+- [ ] **Phase 4: Remote Access** - Full HD remote interface (port 9090) with authentication
+
+## Phase Details
+
+### Phase 1: Foundation & Kiosk UI
+**Goal**: Real-time rainfall and sensor data displayed on 7" touchscreen kiosk (port 8080), with settings and calibration access
+**Depends on**: Nothing (first phase)
+**Requirements**: DASH-01, DASH-02, DASH-03, DASH-04, DASH-05, DASH-06, DASH-07, DASH-08, DASH-09, UI-01, UI-02, UI-03, SETT-01, SETT-02, SETT-03, SETT-04, SETT-05, SETT-06, SETT-07, SETT-08, CAL-01, CAL-02, CAL-03, CAL-04, BACK-01, BACK-02, BACK-03
+**Success Criteria** (what must be TRUE):
+  1. User can view current rainfall readings (Today, Hourly, MAR Accumulated, Yearly Accumulated) on the dashboard
+  2. User can view solar voltage and battery voltage with status indicator (HIGH/NORMAL/LOW) on the dashboard
+  3. User can view current date/time (HH:MM:SS DD-MM-YYYY) and station ID on the dashboard
+  4. User can view communication status (signal strength, connection status) and software version on the dashboard
+  5. User can navigate between Dashboard, Settings, and Calibration menus via main menu
+  6. User can access and modify station info, date/time, network settings, sensor thresholds, and ADC configuration
+  7. User can view live ADC channel readings and reset rainfall counters in calibration view
+  8. Dashboard updates automatically with real-time sensor data
+  9. Touch interface responds with large touch targets (minimum 48px) optimized for 7" 1024x600 display
+**Plans**: TBD
+
+### Phase 2: Data Persistence & File Management
+**Goal**: CSV data logging to flash memory with file management UI
+**Depends on**: Phase 1
+**Requirements**: FILE-01, FILE-02, FILE-03, FILE-04, FILE-05, BACK-04
+**Success Criteria** (what must be TRUE):
+  1. User can view list of CSV files stored in flash memory
+  2. User can navigate file list (scroll up/down) to find specific files
+  3. User can view contents of selected CSV files
+  4. User can delete unwanted CSV files from flash memory
+  5. User can generate tidEDA formatted files for data transmission
+**Plans**: TBD
+
+### Phase 3: Network Transmission
+**Goal**: Automatic CSV data transmission to myvscada server with protocol configuration
+**Depends on**: Phase 2
+**Requirements**: SETT-09
+**Success Criteria** (what must be TRUE):
+  1. User can configure server connection settings (FTP, SCP, SFTP, or WebDAV protocol)
+  2. System transmits CSV data files to configured myvscada server
+  3. Transmission status is visible in the UI
+**Plans**: TBD
+
+### Phase 4: Remote Access
+**Goal**: Full HD remote interface on separate port (9090) with authentication
+**Depends on**: Phase 3
+**Requirements**: UI-04, UI-05
+**Success Criteria** (what must be TRUE):
+  1. User can access the system remotely via browser on port 9090 with full HD (1920x1080) responsive layout
+  2. User can log in with credentials to access the remote interface
+  3. User can log out from any page in the remote interface
+**Plans**: TBD
+
+## Progress
+
+**Execution Order:**
+Phases execute in numeric order: 1 → 2 → 3 → 4
+
+| Phase | Plans Complete | Status | Completed |
+|-------|----------------|--------|-----------|
+| 1. Foundation & Kiosk UI | 0/1 | Not started | - |
+| 2. Data Persistence & File Management | 0/1 | Not started | - |
+| 3. Network Transmission | 0/1 | Not started | - |
+| 4. Remote Access | 0/1 | Not started | - |
+
+---
+
+*Roadmap created: 2026-03-12*
+*Requirements coverage: 41/41 v1 requirements mapped*

.planning/STATE.md

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+# Project State
+
+## Project Reference
+
+See: .planning/PROJECT.md (updated 2026-03-12)
+
+**Core value:** Real-time rainfall and environmental sensor monitoring with automatic data transmission to myvscada server
+**Current focus:** Phase 1: Foundation & Kiosk UI
+
+## Current Position
+
+Phase: 1 of 4 (Foundation & Kiosk UI)
+Plan: Not yet planned
+Status: Ready to plan
+Last activity: 2026-03-12 — Roadmap created
+
+Progress: [░░░░░░░░░░] 0%
+
+## Performance Metrics
+
+**Velocity:**
+- Total plans completed: 0
+- Average duration: N/A
+- Total execution time: 0 hours
+
+**By Phase:**
+
+| Phase | Plans | Total | Avg/Plan |
+|-------|-------|-------|----------|
+| - | - | - | - |
+
+**Recent Trend:**
+- No execution yet
+
+*Updated after each plan completion*
+
+## Accumulated Context
+
+### Decisions
+
+Decisions are logged in PROJECT.md Key Decisions table.
+Recent decisions affecting current work:
+
+- [Research]: Selected Flask + Flask-SocketIO + Bootstrap stack for Pi Zero 2 W performance
+- [Research]: Four-phase vertical slice approach based on dependency analysis
+
+### Pending Todos
+
+[From .planning/todos/pending/ — ideas captured during sessions]
+
+None yet.
+
+### Blockers/Concerns
+
+[Issues that affect future work]
+
+None yet.
+
+## Session Continuity
+
+Last session: 2026-03-12
+Stopped at: Roadmap creation complete
+Resume file: None