Remove the legacy code-mode tool metadata inventory - #37500
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## What changed - Stop adding `code_mode_tool_names` to Responses Lite turn metadata. - Keep `code_mode_tool_names` reserved so client metadata cannot reintroduce the removed, unbounded inventory. - Use the opt-in `tool_namespaces_info` metadata, including each function's `code_mode_name`, when authoritative tool details are requested. ## Testing - Update Responses Lite and code-mode tests to verify the opt-in namespace metadata and normalized code-mode names. GitOrigin-RevId: cbfb9af984de71c7cc175d0cd47ae799a5275309
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Remove the legacy code-mode tool metadata inventory
What changed
code_mode_tool_namesto Responses Lite turn metadata.code_mode_tool_namesreserved so client metadata cannot reintroduce the removed, unbounded inventory.tool_namespaces_infometadata, including each function'scode_mode_name, when authoritative tool details are requested.Testing