feat(go/plugins/googlegenai): register Veo 3.1 models#5183
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Adds the four Veo 3.1 video-generation models to the googlegenai plugin so they resolve through the existing background-model / GenerateOperation flow: - GoogleAI: veo-3.1-generate-preview, veo-3.1-fast-generate-preview - VertexAI: veo-3.1-generate-001, veo-3.1-fast-generate-001 Preview variants are marked Unstable, GA variants Stable. Uses the existing VeoSupports capability set — no plumbing changes required. Fixes the latent reference in go/samples/veo/main.go, which already pointed at googleai/veo-3.1-generate-preview.
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apascal07
approved these changes
May 5, 2026
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Summary
Adds the four Veo 3.1 video-generation models to the Go googlegenai plugin so they resolve through the existing background-model / `GenerateOperation` flow.
All four entries reuse the existing `VeoSupports` capability set — no plumbing changes required because the background-model routing already keys off the Veo classification (`ModelTypeVeo` in `model_type.go`).
This also fixes a latent reference: `go/samples/veo/main.go` on `main` already hard-codes `googleai/veo-3.1-generate-preview` as its model, so the sample would fail at startup until these registrations land.
Test plan
Follow-ups (not in this PR)