BuildChain v1.0.0 — on-device Android build toolchain

KernelSU module that turns any rooted phone into a native Android
compiler. Includes aapt2/aapt/aidl/zipalign/dexdump (API 35 static
arm64), BusyBox, platform-tools. Hooks into Termux for Java/Kotlin/
Python/Gradle. bc-build compiles Java/Kotlin to APK or runs Gradle
projects. bc-sign handles debug/release signing. WebUI dashboard
on port 8089. Auto-links tools into system PATH and Termux PATH.

customize.sh

@@ -0,0 +1,79 @@
+#!/system/bin/sh
+# BuildChain — KernelSU installation script
+
+SKIPUNZIP=0
+
+ui_print "================================================"
+ui_print " BuildChain v1.0.0"
+ui_print " On-device Android build toolchain"
+ui_print "================================================"
+ui_print ""
+
+DEVICE=$(getprop ro.product.model)
+ARCH=$(uname -m)
+API=$(getprop ro.build.version.sdk)
+
+ui_print "- Device: $DEVICE ($ARCH)"
+ui_print "- Android API: $API"
+ui_print ""
+
+# Verify arch
+case "$ARCH" in
+    aarch64|arm64)
+        ui_print "- Architecture: arm64 (supported)"
+        ;;
+    *)
+        ui_print "! WARNING: Untested architecture: $ARCH"
+        ui_print "! Build tools are compiled for arm64"
+        ;;
+esac
+
+ui_print ""
+ui_print "- Setting up config directory..."
+CONFIG_DIR="/data/adb/buildchain"
+mkdir -p "$CONFIG_DIR"
+echo "$MODPATH" > "$CONFIG_DIR/moddir"
+
+ui_print "- Setting permissions..."
+set_perm_recursive $MODPATH 0 0 0755 0644
+set_perm_recursive $MODPATH/tools 0 2000 0755 0755
+set_perm_recursive $MODPATH/scripts 0 2000 0755 0755
+set_perm $MODPATH/service.sh 0 0 0755
+set_perm $MODPATH/post-fs-data.sh 0 0 0755
+set_perm $MODPATH/uninstall.sh 0 0 0755
+
+# Verify tools work
+ui_print ""
+ui_print "- Testing build tools..."
+for tool in aapt2 aidl zipalign; do
+    if [ -f "$MODPATH/tools/build-tools/$tool" ]; then
+        ui_print "  [OK] $tool"
+    else
+        ui_print "  [!!] $tool missing"
+    fi
+done
+
+if [ -f "$MODPATH/tools/busybox" ]; then
+    APPLETS=$("$MODPATH/tools/busybox" --list 2>/dev/null | wc -l)
+    ui_print "  [OK] busybox ($APPLETS applets)"
+else
+    ui_print "  [!!] busybox missing"
+fi
+
+# Check Termux
+ui_print ""
+if pm list packages 2>/dev/null | grep -q "com.termux"; then
+    ui_print "- Termux: installed"
+    ui_print "- After reboot, open Termux and run:"
+    ui_print "    buildchain setup"
+else
+    ui_print "! Termux not installed"
+    ui_print "! Install Termux from F-Droid, then run: buildchain setup"
+fi
+
+ui_print ""
+ui_print "- Installation complete!"
+ui_print "- Reboot to activate"
+ui_print "- CLI: buildchain status"
+ui_print "- WebUI: http://localhost:8089"
+ui_print ""