Two bugs when using Anthropic provider: company_name prepended to filename + temperature error on Sonnet 5

[volkov596]

Bug 1: company_name is prepended to filename before the date

When using the Anthropic provider, the extracted company_name field is prepended to the filename before the date, producing output like:

Melchers 2024_Melchers_Corrosion-Steel_Paper.pdf
Department of Transport 2015_TMR_Crevice-Corrosion_Guide.pdf

This is a problem for users renaming engineering or academic documents where the counterparty concept does not apply. The company_name field is always extracted and inserted even when the prompt_extension explicitly instructs the model not to include names before the year.

The company_name field in DocumentMetadata and the corresponding extraction logic in build_system_prompt appear to be hardcoded for invoice workflows with no way to suppress them via config.

Suggested fix: Add a config option such as extract_company: false under the pdf: section that sets company_name to empty string and skips the company extraction prompt entirely.

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Bug 2: temperature parameter causes 400 error on claude-sonnet-5

Setting temperature: 0.0 in config (or leaving it at the default) causes a 400 error when using claude-sonnet-5:

Error code: 400 - {'type': 'error', 'error': {'type': 'invalid_request_error', 
'message': '`temperature` is deprecated for this model.'}}

Anthropic deprecated the temperature parameter for Claude Sonnet 5. The parameter is currently passed unconditionally in extract_metadata_from_text, extract_metadata_from_images, and extract_metadata_from_text_and_images.

Suggested fix: Conditionally exclude temperature from kwargs when the model is claude-sonnet-5, for example:

if not (provider == "anthropic" and "sonnet-5" in config["ai"].get("model", "")):
    kwargs["temperature"] = config["ai"].get("temperature", 0.0)

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Environment:

• Provider: Anthropic
• Models tested: claude-sonnet-4-6, claude-sonnet-5
• OS: Windows 11
• Use case: Engineering document library (research papers, standards, guides, manuals)