Add web dashboard configuration for master and slaves.

Expose deadzone and unicast-test via HTTP API and UI, reusing the same UART commands as the CLI.

Co-authored-by: Cursor <cursoragent@cursor.com>

goTool/dashboard.go

@@ -3,24 +3,29 @@ package main
 import (
 	"encoding/hex"
 	"encoding/json"
+	"fmt"
 	"log"
 	"sync"
 	"time"
 
 	"github.com/gorilla/websocket"
+
+	"powerpod/gotool/pb"
 )
 
 type MasterView struct {
-	Version uint32 `json:"version"`
-	GitHash string `json:"git_hash"`
-	OK      bool   `json:"ok"`
-	Error   string `json:"error,omitempty"`
+	Version  uint32 `json:"version"`
+	GitHash  string `json:"git_hash"`
+	Deadzone uint32 `json:"deadzone,omitempty"`
+	OK       bool   `json:"ok"`
+	Error    string `json:"error,omitempty"`
 }
 
 type ClientView struct {
 	ID              uint32 `json:"id"`
 	MAC             string `json:"mac"`
 	Version         uint32 `json:"version"`
+	Deadzone        uint32 `json:"deadzone,omitempty"`
 	Available       bool   `json:"available"`
 	Used            bool   `json:"used"`
 	LastPing        uint32 `json:"last_ping"`
@@ -100,6 +105,9 @@ func pollDashboard(link *managedSerial, portName string) DashboardState {
 		GitHash: ver.GetGitHash(),
 		OK:      true,
 	}
+	if dz, err := readDeadzone(link, 0); err == nil {
+		st.Master.Deadzone = dz
+	}
 
 	clients, err := link.listClients()
 	if err != nil {
@@ -110,7 +118,7 @@ func pollDashboard(link *managedSerial, portName string) DashboardState {
 	}
 
 	for _, c := range clients {
-		st.Clients = append(st.Clients, ClientView{
+		cv := ClientView{
 			ID:              c.GetId(),
 			MAC:             formatMAC(c.GetMac()),
 			Version:         c.GetVersion(),
@@ -118,11 +126,29 @@ func pollDashboard(link *managedSerial, portName string) DashboardState {
 			Used:            c.GetUsed(),
 			LastPing:        c.GetLastPing(),
 			LastSuccessPing: c.GetLastSuccessPing(),
-		})
+		}
+		if dz, err := readDeadzone(link, c.GetId()); err == nil {
+			cv.Deadzone = dz
+		}
+		st.Clients = append(st.Clients, cv)
 	}
 	return st
 }
 
+func readDeadzone(link *managedSerial, clientID uint32) (uint32, error) {
+	r, err := link.AccelDeadzone(&pb.AccelDeadzoneRequest{
+		Write:    false,
+		ClientId: clientID,
+	})
+	if err != nil {
+		return 0, err
+	}
+	if !r.GetSuccess() {
+		return 0, fmt.Errorf("deadzone read failed for client %d", clientID)
+	}
+	return r.GetDeadzone(), nil
+}
+
 func formatMAC(mac []byte) string {
 	if len(mac) == 0 {
 		return ""