fix: image commits leads to invalid images

**Location:** `src/blob.ts`, line 28

The code was reading files with UTF-8 text encoding:
```typescript
fs.createReadStream(this.absolutePath, { encoding: 'utf8' })
```

Images are **binary files** containing arbitrary byte values (0-255). The UTF-8 encoding option tells Node.js to:
1. Interpret the binary data as UTF-8 text
2. Drop any byte sequences that are not valid UTF-8

This causes data loss because:
- Valid UTF-8 sequences are 1-4 bytes depending on the character
- Many byte combinations in binary files are invalid UTF-8 sequences
- These invalid bytes are silently dropped by the UTF-8 decoder
- The resulting file is corrupted (missing bytes)

Author: Nr18

src/blob.ts

@@ -26,8 +26,11 @@ export class Blob {
       throw new Error(`File does not exist, path: ${this.absolutePath}`)
     }
 
+    // Always read files as raw buffers without encoding
+    // The Base64Encoder works with buffers for both text and binary files
+    // Using any encoding (like 'utf8') corrupts the data
     return fs
-      .createReadStream(this.absolutePath, { encoding: 'utf8' })
+      .createReadStream(this.absolutePath)
       .pipe(new Base64Encoder())
   }