crun-model-routerlisted

# Crun Model Router Use `../../runtime/crun_cli.py` and `../../catalog/models.json`. Treat the catalog as the source of truth for routing labels and priority, and the authenticated Models endpoint as the source of truth for the selected model's current input schema. ## Build routing intent Normalize the request into one JSON object: ```json { "modality": "image|video|audio", "operation": "text-to-image|image-edit|text-to-video|image-to-video|reference-to-video|text-to-speech|music-generate|...", "quality": "balanced|best", "speed": "balanced|fast", "native_audio": false, "reference_media": [] } ``` Preserve explicit constraints. Infer the operation from supplied media only when unambiguous. ## Route and inspect Prefer a JSON file or stdin for portable invocation: ```text python <runtime>/crun_cli.py models route --intent-file <intent.json> python <runtime>/crun_cli.py models describe --model <selected-model> ``` Use `selected` by default. Present `alternatives` only when their tradeoffs matter or the user asks. Read `required_input_fields` and `input_schema`, then ask only for required information that cannot be derived. Never invent fields or copy a sibling model's schema. Use `models list` when the static candidate is rejected or missing. Never infer capability or priority from a model name or schema; update `models.json` explicitly. Report a hard-constraint conflict instead of weakening it silently. After routing, hand off affordability checks to `..