## Summary
Adds a nullable `pricing_unit` column to the LLM model registry's
`llm_models` table, recording how each model is billed ("tokens",
"characters", "images", "minutes", "requests", "free", "not_findable").
It lets pricing-coverage reporting exclude models that aren't priced
per-token (image/video/audio models currently drag the "% priced" number
down even though they can never carry a per-token price), and lays the
groundwork for non-token pricing.
The default model catalog is entirely per-token, so `seed` and
`syncLlmCatalog` set `pricing_unit="tokens"` on those rows. The admin
LLM model form (create + edit) and the admin API get a pricing-unit
selector so admin-curated models can set it; existing rows can stay
unset.
Auto-discovered models get their unit from the model-registry pipeline,
which lands separately.
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Co-authored-by: devin-ai-integration[bot] <158243242+devin-ai-integration[bot]@users.noreply.github.com>
Eric Allam
359e2503c9