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 YAMLs (limits/features/sources) with no code logic modifications.

Overview
Refreshes multiple OpenRouter model YAMLs to align capability metadata with current provider behavior.

Adds/standardizes limits.max_tokens, expands features (e.g., json_output/structured_output/tooling flags), and includes additional model metadata such as sources, status, thinking, and per-model params (e.g., seed, max_tokens bounds). Also corrects the l3.1-euryale-70b model identifier to sao10k/l3.1-euryale-70b.

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