Tool definition - response removing input processing | Qwen3-Next, Qwen3-Coder-Next and more

[przepeck]

🛠 Summary

CVS-187934
Input processing for Qwen3 Next and Qwen3 Coder Next and more chat templates
Removing response field from tool definitions.

🧪 Checklist

• Unit tests added.
• The documentation updated.
• Change follows security best practices.
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[Copilot]

🟡 Changes recommended

There are confirmed logic/template issues (workaround gating via needsWorkarounds() and a broken example template with stray wq plus incomplete response stripping) that can prevent the new behavior from working correctly.

Once you've addressed the issues Copilot identified, you can request another Copilot review.

Pull request overview

Adds support for chat templates (notably Qwen3-* Next and related parsers) that require removing the response schema from tool definitions, and extends template analysis/probing plus tests to cover this capability.

Changes:

• Introduces ChatTemplateCaps::removeResponseFromToolDefinition and wires it through template analysis, probing, and input adaptation.
• Adds a new Qwen3-Coder-Next chat template fixture and updates analyzer/unit tests to validate detection and adaptation behavior.
• Updates example templates to align with the “response removed from tool definitions” behavior.

File summaries

File	Description
src/test/llm/chat_templates/chat_template_qwen3coder_next.jinja	Adds a Qwen3-Coder-Next template fixture for tests/detection.
src/test/llm/chat_template_analyzer_test.cpp	Extends analyzer tests to assert removeResponseFromToolDefinition and adds Qwen3-Coder-Next coverage.
src/test/llm/chat_template_adapter_test.cpp	Adds adapter tests ensuring response is removed from tool definitions.
src/llm/servable_initializer.cpp	Runs an additional probe to validate tool-definition “response” handling and warns if unsupported.
src/llm/io_processing/input_processors/chat_template_adapter.cpp	Implements removal of function.response from tool definitions when the cap is enabled.
src/llm/io_processing/chat_template/probe.hpp	Declares the new probeChatTemplateToolResponse probe.
src/llm/io_processing/chat_template/probe.cpp	Implements the tool-response probe that toggles the new cap.
src/llm/io_processing/chat_template/caps.hpp	Adds the new capability flag and prints it in toString().
src/llm/io_processing/chat_template/analyzer.cpp	Sets the new cap for detected template families that render tool “response” definitions.
extras/chat_template_examples/chat_template_qwen3coder_next.jinja	Updates example rendering of tool-call arguments.
extras/chat_template_examples/chat_template_qwen3_next.jinja	Adds an example template intended to remove response from tool definitions.

Review details

• Files reviewed: 9/9 changed files
• Comments generated: 5
• Review effort level: Lite

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