broken data stream when reading image file

Description

The auto-solver crashes with a Pillow error when trying to read the captcha image downloaded from Discord.

Cause

The image download from Discord was incomplete or corrupt. Pillow's Image.open() is lazy and only fully decodes the image when .load() or a pixel operation is called, so corrupt bytes pass the open() check and crash later inside ONNX.

Fix

In captcha_solver/solve.py, call handle.load() before np.asarray(). In cogs/captcha.py, validate the downloaded bytes with Image.open(BytesIO(img_data)).load() before writing to disk. If it raises, skip the solve.

Code change

Before

handle = Image.open(source)
return np.asarray(handle.convert('RGB'))

After

handle = Image.open(source)
handle.load()
return np.asarray(handle.convert('RGB'))