OpenResponses WebSearch silently drops blocked_domains

[Kamilbenkirane]

Priority: High
Related: #199

protocols/openresponses/tools.py:23-28 only maps allowed_domains in the WebSearch mapper. Users setting blocked_domains get no error and no effect — the parameter is silently dropped.

What to fix:

• Add blocked_domains mapping to OpenResponses WebSearchMapper
• Add max_uses mapping if supported
• Consider warning when unsupported config options are passed

Files:

• src/celeste/protocols/openresponses/tools.py:23-28

[Kamilbenkirane]

Closing: this is part of a broader issue — all tool mappers silently drop unsupported WebSearch config fields, not just OpenResponses. Replaced by a broader issue covering all providers.