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Xuanwo
63aa06ef7d
## Summary - Add sync/async `DBConnection.list_gpu_classes()` returning typed `GpuClass` records for `GET /v1/gpu/classes`. Records include the class name, Kubernetes resource, GPU model and memory, per-worker GPU maximum, and worker CPU/memory/ephemeral-storage limits. - Add `udf(gpu_class=...)` for immutable Function-level GPU placement. It requires `gpu=True`; Function versions expose their registered `gpu_class`. - Add `gpu_class` and `gpu_count` to `refresh_column` / `refresh_column_async` and Rust `RefreshColumnOptions`. Both are sent as top-level `backfill_column` fields and validated before any request. `gpu_count` is the aggregate GPU budget across Function workers. - Validate GPU class names with the server lowercase 63-character DNS-label rule. - Document the discovery-to-registration flow, configured hardware versus free capacity, System Usage permission, and per-refresh GPU placement in the API and web guides. Older servers without `/v1/gpu/classes` produce a clear `NotImplementedError` instead of a bare 404. Part of ENT-3470. The client follows the in-flight Sophon contract on `xuanwo/ent-3470-fix` for GPU class discovery and backfill placement options. ## Breaking change `PythonRuntimeSpec::PythonV2` adds `gpu_class`, and `RefreshColumnOptions` adds `gpu_class` and `gpu_count`. Rust callers constructing either value with all fields explicitly must supply the new fields. ## Validation At `7685c968`: Rust GPU tests (5 passed), Rust/PyO3 clippy, Python extension build, pyright, ruff, and Python Function/runtime, discovery, refresh placement, and refresh regressions (147 passed, 6 skipped). At `b22428fd`: Rust GPU tests (5 passed), rustfmt, ruff, pyright, Function slice 2 (85 passed), and remote GPU/refresh tests (20 passed). The final commit only updates documentation and Rust doc comments.