Add testing_do script and Makefile target

Introduce a new zsh helper script (scripts/testing_do.sh) and a Makefile target (testing_do) to automate the testing DFU workflow. The script sets strict error handling, kills any existing vphone-cli, runs fw_prepare, fw_patch_jb and testing_ramdisk_build, sends the ramdisk in the background, boots DFU, and tracks/cleans up child processes on exit. This simplifies and sequences the steps required to prepare, patch, send and boot the test ramdisk.

Makefile

@@ -233,6 +233,9 @@ testing_ramdisk_build:
 testing_ramdisk_send:
 	cd $(VM_DIR) && IRECOVERY="$(CURDIR)/$(IRECOVERY)" zsh "$(CURDIR)/$(SCRIPTS)/testing_ramdisk_send.sh"
 
+testing_do:
+	zsh "$(CURDIR)/$(SCRIPTS)/testing_do.sh"
+
 # ═══════════════════════════════════════════════════════════════════
 # CFW
 # ═══════════════════════════════════════════════════════════════════

scripts/testing_do.sh

@@ -0,0 +1,49 @@
+#!/usr/bin/env zsh
+set -euo pipefail
+
+# ─── Track child PIDs for cleanup ───────────────────────────────────
+typeset -a CHILD_PIDS=()
+
+cleanup() {
+    echo "\n[testing_do] cleaning up..."
+    for pid in "${CHILD_PIDS[@]}"; do
+        if kill -0 "$pid" 2>/dev/null; then
+            echo "[testing_do] killing PID $pid"
+            kill -9 "$pid" 2>/dev/null || true
+        fi
+    done
+    exit 0
+}
+
+trap cleanup EXIT INT TERM
+
+PROJECT_DIR="$(cd "$(dirname "${0:a:h}")" && pwd)"
+cd "$PROJECT_DIR"
+
+# ─── Kill existing vphone-cli ──────────────────────────────────────
+echo "[testing_do] killing existing vphone-cli..."
+pkill -9 vphone-cli 2>/dev/null || true
+sleep 1
+
+# ─── Build pipeline ───────────────────────────────────────────────
+echo "[testing_do] fw_prepare..."
+make fw_prepare
+
+echo "[testing_do] fw_patch_jb..."
+make fw_patch_jb
+
+echo "[testing_do] testing_ramdisk_build..."
+make testing_ramdisk_build
+
+# ─── Send ramdisk in background ───────────────────────────────────
+echo "[testing_do] testing_ramdisk_send (background)..."
+make testing_ramdisk_send &
+CHILD_PIDS+=($!)
+
+# ─── Boot DFU ─────────────────────────────────────────────────────
+echo "[testing_do] boot_dfu..."
+make boot_dfu &
+CHILD_PIDS+=($!)
+
+echo "[testing_do] waiting for boot_dfu (PID ${CHILD_PIDS[-1]})..."
+wait "${CHILD_PIDS[-1]}" 2>/dev/null || true