Invalid Characters in MainActivity.smali File

### Description
The `MainActivity.smali` file contains invalid backtick (`) characters that cause parsing errors during the APK build process.

### Current Behavior
When building the APK, the following error occurs:
```
app/factory/decompiled/smali/com/etechd/l3mon/MainActivity.smali[743,0] Error for input '`': Invalid text
app/factory/decompiled/smali/com/etechd/l3mon/MainActivity.smali[743,1] Error for input '`': Invalid text
app/factory/decompiled/smali/com/etechd/l3mon/MainActivity.smali[743,2] Error for input '`': Invalid text
Could not smali file: com/etechd/l3mon/MainActivity.smali
```

### Expected Behavior
The `MainActivity.smali` file should contain valid syntax without unsupported characters.

### Reproduction Steps
1. Examine the `MainActivity.smali` file in the decompiled directory
2. Notice the presence of backtick characters (```) around line 743
3. Attempt to build the APK

### Proposed Fix
Create a script to automatically clean the smali files of invalid characters:

```bash
#!/bin/bash
DECOMPILED_DIR="/path/to/decompiled"

# Fix syntax issues in MainActivity.smali
MAIN_ACTIVITY_PATH="$DECOMPILED_DIR/smali/com/etechd/l3mon/MainActivity.smali"
if [ -f "$MAIN_ACTIVITY_PATH" ]; then
# Replace backtick characters with valid ones (single quotes)
sed -i '' 's/```//g' "$MAIN_ACTIVITY_PATH"
sed -i '' "s/\`/'/g" "$MAIN_ACTIVITY_PATH"
fi
```

### Additional Context
These invalid characters might be introduced during the decompilation process or as a result of code comments in the original source.