f030ab62eb
## Summary This PR removes `image_detail_original` as a runtime experiment and makes original image detail available whenever the selected model supports it. Concretely, this change: - drops the `image_detail_original` feature flag from the feature registry and generated config schema - makes tool-emitted image detail depend only on `ModelInfo.supports_image_detail_original` - updates `view_image` and `code_mode`/`js_repl` image emission to use that capability check directly - removes now-redundant experiment-specific tests and instruction coverage - keeps backward compatibility for existing configs by silently ignoring a stale `features.image_detail_original` entry The net effect is that `detail: "original"` is always available on supported models, without requiring an experiment toggle.
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