fix: use filtered messages in async _check_and_compact()

[thakoreh]

Summary

Fixes #1205

The async _check_and_compact() method was using self._params['messages'] instead of the filtered local messages variable when building the summarization request. This caused tool_use blocks to be sent to the API without corresponding tool_result blocks, resulting in BadRequestError.

Root Cause

In src/anthropic/lib/tools/_beta_runner.py, line 478:

# Before (BUGGY)
messages = [
    *self._params["messages"],  # <-- Uses unfiltered messages
    BetaMessageParam(...)
]

The sync version of this method (line 218) correctly uses *messages (the filtered variable), but the async version was using the unfiltered self._params["messages"].

Fix

Changed line 478 to use the filtered messages variable:

# After (FIXED)
messages = [
    *messages,  # <-- Uses filtered messages (tool_use blocks removed)
    BetaMessageParam(...)
]

Testing

• The fix aligns the async implementation with the sync implementation
• The filtering logic (lines 459-476) now has its effect preserved when building the summarization request

[karpetrosyan]

#1205 was already fixed