docs: document Waveshare 5B dashboard hardware

docs/ARCHITECTURE.md

@@ -232,3 +232,21 @@ The Dashboard ESP32-S3 renders the touchscreen UI and future vehicle visualizati
 For v1, controller-to-dashboard communication is WiFi/HTTP only. ESP-NOW, MQTT, UART, and CAN-between-controllers are not part of the v1 dashboard link.
 
 The load-switching hardware is not finalized. Bosch relays, WUPP-style modules, smart high-side switching, or a future custom PCB remain implementation options until explicitly selected.
+
+## Dashboard Hardware Target
+
+The current dashboard hardware target is the Waveshare ESP32-S3 Touch LCD 5B.
+
+Selected dashboard hardware:
+
+- Waveshare ESP32-S3 Touch LCD 5B
+- 5-inch touchscreen
+- 1024x600 display resolution
+- Capacitive touch
+- Native WiFi
+- LVGL-capable ESP32-S3 platform
+- Integrated CAN transceiver available for future vehicle integration
+
+This replaces the earlier Pico dashboard concept as the active dashboard architecture.
+
+The Dashboard ESP32-S3 communicates with the Cargo ESP32 over WiFi/HTTP REST for v1. CAN/OBD-II support remains a future dashboard-side vehicle-visualization feature and is not part of the Cargo ESP32 role.

docs/HARDWARE.md

@@ -185,3 +185,18 @@ Candidate options:
 - WUPP-style fused relay/distribution module
 - Smart high-side switching
 - Future custom PCB
+
+## Selected Dashboard Hardware
+
+The selected dashboard hardware target is the Waveshare ESP32-S3 Touch LCD 5B.
+
+Key hardware notes:
+
+- 5-inch touchscreen display
+- 1024x600 resolution
+- ESP32-S3 based
+- Capacitive touch
+- Native WiFi
+- Integrated CAN transceiver available for future vehicle integration
+
+This is the active dashboard platform for the project. The previous Pico dashboard implementation has been archived and is reference-only.

docs/project-state.md

@@ -222,3 +222,9 @@ The old `pico-dashboard/` implementation has been moved to `archive/legacy-pico-
 It is retained as reference material only. It is not active firmware and is no longer part of the default validation path.
 
 Current dashboard work should target the ESP32-S3 dashboard direction documented in `docs/dashboard-esp32s3.md` and the placeholder at `firmware/esp32-s3-dashboard/`.
+
+## Selected Dashboard Hardware
+
+The current dashboard target is the Waveshare ESP32-S3 Touch LCD 5B with a 5-inch 1024x600 touchscreen.
+
+This replaces the earlier Pico dashboard concept. The Pico dashboard has been archived as reference-only material.