Add BLE host transport selectable via DIP8 alongside UART.

Master can speak the same framed protobuf protocol over NimBLE or UART; goTool gains -ble, ble-rtt, and ble-stream timing checks for ESP-NOW coexistence.

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

goTool/cmd_accel_stream.go

@@ -0,0 +1,44 @@
+package main
+
+import (
+	"flag"
+	"fmt"
+
+	pb "powerpod/gotool/pb"
+)
+
+func runAccelStreamCmd(h hostConn, args []string) error {
+	fs := flag.NewFlagSet("accel-stream", flag.ExitOnError)
+	clientID := fs.Uint("client", 0, "slave client id (0 with -all)")
+	all := fs.Bool("all", false, "all registered clients")
+	enable := fs.Bool("enable", true, "enable stream")
+	disable := fs.Bool("disable", false, "disable stream")
+	period := fs.Uint("period", 0, "BLE push period_ms 8–16 (0=leave/default)")
+	if err := fs.Parse(args); err != nil {
+		return err
+	}
+	on := *enable
+	if *disable {
+		on = false
+	}
+	if !*all && *clientID == 0 {
+		return fmt.Errorf("need -client ID or -all")
+	}
+	req := &pb.AccelStreamRequest{
+		Write:    true,
+		Enable:   on,
+		PeriodMs: uint32(*period),
+	}
+	if *all {
+		req.AllClients = true
+	} else {
+		req.ClientId = uint32(*clientID)
+	}
+	r, err := hostAccelStream(h, req)
+	if err != nil {
+		return err
+	}
+	fmt.Printf("accel-stream: success=%v enabled=%v client_id=%d slaves_updated=%d\n",
+		r.GetSuccess(), r.GetEnabled(), r.GetClientId(), r.GetSlavesUpdated())
+	return nil
+}