feat(tng): TNG eWallet Promon bypass、Zygisk 信号守卫与注册链保护

新增 TngRootBypassHook 与 tng_exit_guard 模块，修复 BAL 强拉、SIGABRT/pc==lr SEGV 崩溃，验证可进入注册页。

scripts/test-tng-survive.sh

@@ -0,0 +1,16 @@
+#!/system/bin/sh
+logcat -c
+am force-stop my.com.tngdigital.ewallet
+sleep 1
+monkey -p my.com.tngdigital.ewallet -c android.intent.category.LAUNCHER 1 >/dev/null 2>&1
+sleep 2
+echo "=== @2s ==="; ps -A | grep -i tng || echo NONE
+sleep 5
+echo "=== @7s ==="; ps -A | grep -i tng || echo NONE
+sleep 8
+echo "=== @15s ==="; ps -A | grep -i tng || echo NONE
+logcat -d > /data/local/tmp/tngfull.txt
+echo "=== guard ==="
+grep TngExitGuard /data/local/tmp/tngfull.txt | tail -30
+echo "=== outcome ==="
+grep -E 'exited cleanly|exited due|has died|skipped SIGILL|blocked kill|blocked tgkill|UserLogin|Displayed|PLT blocked' /data/local/tmp/tngfull.txt | tail -30