Describe the bug

Cache corruption not recoverable after retries: 'BatchKVCache' object has no attribute '_quantized'

To Reproduce
Steps to reproduce the behavior:

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This error appeared in a chat session in openclaw 3.24

Expected behavior
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Screenshots
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Desktop (please complete the following information):

• OS: [e.g. iOS]
• Browser [e.g. chrome, safari]
• Version [e.g. 22]

Smartphone (please complete the following information):

• Device: [e.g. iPhone6]
• OS: [e.g. iOS8.1]
• Browser [e.g. stock browser, safari]
• Version [e.g. 22]

Additional context
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