[regression in 0.74.2+] "metadata: dict" gets transformed into "meta dict"

[hyperknot]

Issue

I basically cannot use Aider because of the following issue:

I have a Python source file like this:

def make_recipe_gemini(metadata: dict, transcription: str) -> None:

Aider basically cannot keep this metadata: dict part. It gets transformed into meta dict, which of course breaks all code, which it recognised with the internal flake8 pass.

It's not a bug in Claude, it's Aider who is already giving the buggy inputs!

For example, this is still before LLM response, when I ask:

in process.py where is this meta dict coming from??? make it metadata: dict

-------
ASSISTANT I see there's a typo in the function signature in process.py where it says `meta dict` instead of `meta dict`. I'll need to edit that file to fix it.
ASSISTANT 
ASSISTANT Please add process.py to the chat so I can make the correction.
-------

I've managed to create a minimum reproducible .llm.history, uploaded here as txt.

llm.history.txt

Version and model info

Aider 0.75.1
model: openrouter/anthropic/claude-3.7-sonnet (same with 3.5)

[hyperknot]

I did some testing:

• 0.73.0 works correctly
• 0.74.0 works correctly
• 0.74.1 works correctly
• 0.74.2 broken
• 0.74.3 broken
• 0.75.1 broken

[hyperknot]

In this I cannot find anything, maybe it's in a dependency?
v0.74.1...v0.74.2

[FeepingCreature]

(Fyi, the reason for this is some really, really, really really bad litellm networking code that tries to handle SSE but doesn't actually understand how SSE works.)