feat(openrouter): update model YAMLs [bot]

[harshiv-26]

Auto-generated by poc-agent for provider openrouter.

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Note

Low Risk
Low risk metadata-only changes to model configuration (pricing and documentation links) with no runtime logic modifications.

Overview
Updates OpenRouter model YAMLs to reflect new token pricing: nvidia/nemotron-3-super-120b-a12b input/output costs drop, while qwen/qwen3.5-9b input cost increases.

Also normalizes the qwen/qwen3.5-9b sources link by removing the /api suffix.

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[github-actions]

/test-models

[harshiv-26]

Gateway test results

• Total: 18
• Passed: 18
• Failed: 0
• Validation failed: 0
• Errored: 0
• Skipped: 0
• Success rate: 100.0%

Provider	Model	Scenarios
openrouter	nvidia/nemotron-3-super-120b-a12b	success: json-output:text-text, tool-call:text-text, params:text-text, params:text-text:stream, json-output:text-text:stream, tool-call:text-text:stream, reasoning:text-text:stream, reasoning:text-text
openrouter	qwen/qwen3.5-9b	success: params:text-text, tool-call:text-text, tool-call:text-text:stream, params:text-text:stream, structured-output:text-text:stream, json-output:text-text, reasoning:text-text:stream, json-output:text-text:stream, reasoning:text-text, structured-output:text-text