Add model-api commands (fetch, list, predict)

[cretz]

🚀 What

Adds the model-api command group: fetch (single Model API by name), list (workspace-added, --all for full catalog), and predict (inference via --content, or verbatim --data/--file)

Depends on basetenlabs/baseten-go#9

💻 How

Management client for fetch/list, direct inference POST for predict (model selected by --model). List renders NAME / CONTEXT / $/1M IN / $/1M OUT / ADDED with cost columns right-aligned via a new TableOutput struct on OutputTable.

🔬 Testing

Unit tests cover list (rows, JSON, pagination, added-only), fetch (text/JSON), and predict (content, verbatim, validation). go test ./... green.

[Copilot]

Pull request overview

Adds a new model-api command group to the Baseten CLI to browse and invoke “Model APIs”, plus supporting plumbing for shared auth transport and enhanced table rendering.

Changes:

• Add baseten model-api {list,fetch,predict} commands (management fetch/list + direct inference POST for predict) with unit tests.
• Introduce TableOutput to support right-aligned columns and migrate existing table outputs to the new signature.
• Add AuthTransport() and a new Remote.ModelAPIInferenceURL() helper to support non-SDK HTTP calls.

Reviewed changes

Copilot reviewed 12 out of 13 changed files in this pull request and generated 2 comments.

Show a summary per file

File	Description
internal/cmd/remote.go	Adds ModelAPIInferenceURL() and remote host mapping for Model API inference.
internal/cmd/command.org_secret.go	Migrates table output to TableOutput.
internal/cmd/command.org_apikey.go	Migrates table output to TableOutput.
internal/cmd/command.model.go	Migrates table output to TableOutput.
internal/cmd/command.model_environment.go	Migrates table output to TableOutput.
internal/cmd/command.model_deployment.go	Migrates table output to TableOutput.
internal/cmd/command.model_api.go	Implements model-api fetch/list/predict command handlers.
internal/cmd/command.model_api_test.go	Adds unit tests for model-api list/fetch/predict behaviors.
internal/cmd/command_context.go	Adds TableOutput, right-aligned columns, and AuthTransport() refactor.
go.mod	Bumps baseten-go dependency to a newer pseudo-version.
go.sum	Adds checksums for the updated baseten-go version.
cmd/command.model_api.go	Adds CLI metadata and flag structs for model-api commands.
cmd/command.go	Registers the new model-api command group under the root command.

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[marius-baseten]

What do you think about changing language to "Describe a Model API" of "Featch a Model API description". We're dealing with the metadata here, I my understanding "the API" is more like the "backend server" (e.g. you can call/invoke it).

[cretz]

I am trying to keep the idea of "fetch" = "get single resource" and "list" = "get multiple resources" across the CLI. But, I could see changing all "fetch"es to "describe"s. E.g. baseten model describe instead of baseten model fetch. Think we should do that?