Replace the mixed read interface (internal types, explicit parameter
enumeration, ad-hoc custom types) with edge-owned request structs, one
file per request in src/requests/. Each has a new() constructor taking
only the required parameters, a no-macro fluent builder in src/builders/,
and a From conversion into the internal request type in
requests/conversions/, grouped by request type. Conversions construct
and destructure with full field lists, so a parameter added on either
side fails compilation instead of being silently dropped.
The old reexport aliases (ScrollRequest = ScrollRequestInternal, etc.)
are replaced by the edge types under the same names; retrieve() takes a
RetrieveRequest instead of a parameter triple. Python bindings wrap the
edge types, and the published Rust examples use the builders.
Co-authored-by: Claude Fable 5 <noreply@anthropic.com>
* Move `DenseVector`/`MultiDenseVector` from `api` to `segment`
* Move `OrderByInterface` from `api` to `segment`
Reason: it's used in `edge` which shouldn't depend on `api`.
* Make `shard` -> `api` dependency optional
* Remove `api` from the amalgamation
* Don't install protoc in edge Actions
