genblaze-google: VeoProvider docs/quickstart reference delisted veo-2.0/veo-3.0 slugs (same class as #233)

[ffumero2003]

Problem

libs/connectors/google/README.md and VeoProvider's docstring present veo-2.0-generate-001 / veo-3.0-generate-001 / veo-3.0-fast-generate-001 as the current models. None of them exist on the Gemini Developer API any more.

The README quickstart is copy-pasteable and broken:

# libs/connectors/google/README.md:46
.step(VeoProvider(), model="veo-3.0-generate-001", ...)

This is the same failure mode as #233 (delisted imagen-3.0-* slugs in the quickstart) — a new user follows the documented example and gets a preflight failure on their first run.

Evidence

Querying GET /v1beta/models with a working Gemini API key returns 54 models. The only Veo entries are:

veo-3.1-generate-preview
veo-3.1-fast-generate-preview
veo-3.1-lite-generate-preview

validate_model() — using the fallback_probe added in #248 — grades all three documented slugs as dead, and all three live ones as authoritative:

veo-3.0-fast-generate-001        not_found          probe   upstream probe returned DEAD
veo-3.0-generate-001             not_found          probe   upstream probe returned DEAD
veo-2.0-generate-001             not_found          probe   upstream probe returned DEAD

veo-3.1-lite-generate-preview    ok_authoritative   probe
veo-3.1-fast-generate-preview    ok_authoritative   probe
veo-3.1-generate-preview         ok_authoritative   probe

Locations

File	Line	What
libs/connectors/google/README.md	22	provider table lists all three delisted slugs
libs/connectors/google/README.md	46	quickstart example users copy
libs/connectors/google/genblaze_google/provider.py	52-54	docstring "Current GA examples"
libs/connectors/google/genblaze_google/_families.py	120, 145-146	example_slugs on the Veo families

(veo-3.0-generate-001 also appears in lmnt / luma / stability-audio test_catalog_decoupling.py as a deliberate foreign-slug fixture — those are fine and should not change.)

Suggested fix

Update the four locations above to the veo-3.1-*-preview slugs, and add a regression test mirroring the one #233 shipped (test_readme_imagen_quickstart_uses_live_slug / test_example_script_imagen_step_uses_live_slug) so the README quickstart slug is asserted against the catalog and can't silently rot again.

Worth noting these are -preview rather than GA, so the wording should probably say "current" rather than "GA".

Found via

Live verification while merging #286/#289 — the fallback_probe from #248 is what surfaced it.

🤖 Generated with Claude Code