[BUG] Conversation breaks(throws 400) after image encoding error

Environment

• Platform (select one):
• [x] Anthropic API
• [ ] AWS Bedrock
• [ ] Google Vertex AI
• [ ] Other: <!-- specify -->
• Claude CLI version: 1.0.94
• Operating System: macos 15.5
• Terminal: VSCode terminal

Bug Description

I am building an app that the saves an image as base64 in a database. I noticed that the mimitype on the string was incorrect. I asked it to try a fix and it broke the input instead. Now that broken image is part of context every input in the session gets this response.

API Error: 400 {"type":"error","error":{"type":"invalid_request_error","message":"messages.1.content.0.image.source
    .base64.media_type: Input should be 'image/jpeg', 'image/png', 'image/gif' or 
    'image/webp'"},"request_id":"req_011CSkvGh2ZBPjejMTkGWm2q"}

I tried /compact and it throws the same error:

Error: Error during compaction: Error: API Error: 400 {"type":"error","error":{"type":"invalid_request_error","mess
    age":"messages.0.content.1.image.source.base64.media_type: Input should be 'image/jpeg', 'image/png', 'image/gif' 
    or 'image/webp'"},"request_id":"req_011CSkvpw6XgWzgQrQpqNEmT"}

Steps to Reproduce

1. Take a broken image file and make the text part of your context.
2. send the prompt.

Expected Behavior

Working as normal

Actual Behavior

Throws 400 error for each prompt