Fix BLE scan + touch logic + UUID + version read

- Client: change passive BLE scan to active scan (setActiveScan(true))
  Server puts name/UUID in scan response; passive scan never
  received them, so isAdvertisingService() and getName() failed.
- Server: add INPUT_PULLUP on touch pins to prevent floating
  triggers when sensors disconnected
- Server: update BLE UUID characteristic in SET_ID handler
  (pUuidChar->setValue) so reconnecting clients see correct UUID
- Server: touch logic changed from t1Active/t2Active to
  !t1Active/!t2Active (door closed = relay ON)
- Android: flushReadBuffer before VERSION? to discard stale
  boot log output; use Regex for BUILD_NR parsing
- copy_firmware.sh: copy to firmware/server/ and firmware/client/
  subdirectories to match EspFlasher.assetPath()
- version.txt: server=20 client=5

tools/copy_firmware.sh

@@ -1,22 +1,29 @@
 #!/bin/bash
 set -e
 
-BINARY_DIR="$(cd "$(dirname "$0")/.." && pwd)/.pio/build/s3lite-server"
-ASSETS_DIR="$(cd "$(dirname "$0")/.." && pwd)/android/app/src/main/assets/firmware"
+PROJECT_DIR="$(cd "$(dirname "$0")/.." && pwd)"
+ASSETS_BASE="$PROJECT_DIR/android/app/src/main/assets/firmware"
 
-mkdir -p "$ASSETS_DIR"
+copy_binaries() {
+    local BINARY_DIR="$1"
+    local ASSETS_DIR="$2"
 
-cp "$BINARY_DIR/bootloader.bin" "$ASSETS_DIR/"
-cp "$BINARY_DIR/partitions.bin" "$ASSETS_DIR/"
-cp "$BINARY_DIR/firmware.bin" "$ASSETS_DIR/"
+    mkdir -p "$ASSETS_DIR"
+    cp "$BINARY_DIR/bootloader.bin" "$ASSETS_DIR/"
+    cp "$BINARY_DIR/partitions.bin" "$ASSETS_DIR/"
+    cp "$BINARY_DIR/firmware.bin" "$ASSETS_DIR/"
 
-BOOT_APP0=$(find ~/.platformio/packages/framework-arduinoespressif32 -name "boot_app0.bin" 2>/dev/null | head -1)
-if [ -n "$BOOT_APP0" ]; then
-    cp "$BOOT_APP0" "$ASSETS_DIR/"
-else
-    echo "ERROR: boot_app0.bin not found"
-    exit 1
-fi
+    BOOT_APP0=$(find ~/.platformio/packages/framework-arduinoespressif32 -name "boot_app0.bin" 2>/dev/null | head -1)
+    if [ -n "$BOOT_APP0" ]; then
+        cp "$BOOT_APP0" "$ASSETS_DIR/"
+    else
+        echo "ERROR: boot_app0.bin not found"
+        exit 1
+    fi
 
-echo "Firmware binaries copied to $ASSETS_DIR:"
-ls -la "$ASSETS_DIR"
+    echo "Copied to $ASSETS_DIR:"
+    ls -la "$ASSETS_DIR"
+}
+
+copy_binaries "$PROJECT_DIR/.pio/build/s3lite-server" "$ASSETS_BASE/server"
+copy_binaries "$PROJECT_DIR/.pio/build/s3lite-client" "$ASSETS_BASE/client"