Fix optional scheme trait methods and documentation links

Restore produced_encodings in feature-gated schemes and fix stale trait links. Document scheme ID resolution for Clippy.

Signed-off-by: Matt Katz <mhkatz97@gmail.com>

Author: mhk197

vortex-btrblocks/src/builder/mod.rs

@@ -231,7 +231,7 @@ impl BtrBlocksCompressorBuilder {
     /// call.
     ///
     /// At build time, each scheme is replaced by the newest version in its predecessor chain
-    /// whose [`required_serialized_ids`](Scheme::required_serialized_ids) are all permitted.
+    /// whose [`produced_encodings`](Scheme::produced_encodings) are all permitted.
     /// Schemes with no eligible version are removed. This also applies to schemes added after
     /// this call. The file writer passes the serialized IDs its enabled editions permit.
     pub fn allow_serialized_ids(mut self, allowed: &HashSet<ArrayId>) -> Self {

vortex-btrblocks/src/schemes/binary/zstd_buffers.rs

@@ -31,7 +31,7 @@ impl Scheme for ZstdBuffersScheme {
         canonical.dtype().is_binary()
     }
 
-    fn required_serialized_ids(&self) -> Vec<ArrayId> {
+    fn produced_encodings(&self) -> Vec<ArrayId> {
         vec![vortex_zstd::ZstdBuffers.id()]
     }
 

vortex-btrblocks/src/schemes/integer/delta.rs

@@ -97,7 +97,7 @@ impl Scheme for DeltaScheme {
         canonical.dtype().is_int()
     }
 
-    fn required_serialized_ids(&self) -> Vec<ArrayId> {
+    fn produced_encodings(&self) -> Vec<ArrayId> {
         vec![Delta.id()]
     }
 

vortex-btrblocks/src/schemes/string/onpair.rs

@@ -50,7 +50,7 @@ impl Scheme for OnPairScheme {
         canonical.dtype().is_utf8()
     }
 
-    fn required_serialized_ids(&self) -> Vec<ArrayId> {
+    fn produced_encodings(&self) -> Vec<ArrayId> {
         vec![OnPair.id()]
     }
 

vortex-btrblocks/src/schemes/string/zstd_buffers.rs

@@ -31,7 +31,7 @@ impl Scheme for ZstdBuffersScheme {
         canonical.dtype().is_utf8()
     }
 
-    fn required_serialized_ids(&self) -> Vec<ArrayId> {
+    fn produced_encodings(&self) -> Vec<ArrayId> {
         vec![vortex_zstd::ZstdBuffers.id()]
     }
 

vortex-compressor/src/compressor/mod.rs

@@ -101,7 +101,7 @@ impl CascadingCompressor {
 
     /// Selects the newest eligible version of each scheme, intersecting with any earlier call.
     ///
-    /// A version is eligible only when all of its [`Scheme::required_serialized_ids`] are allowed.
+    /// A version is eligible only when all of its [`Scheme::produced_encodings`] are allowed.
     /// Otherwise its predecessors are tried in order; the scheme is removed if none is eligible.
     /// Selection preserves registration order and happens before any compression or estimation.
     pub fn with_allowed_serialized_ids(mut self, allowed: HashSet<ArrayId>) -> Self {
@@ -154,6 +154,7 @@ impl CascadingCompressor {
         self.scheme_aliases.contains_key(&scheme)
     }
 
+    /// Resolves a registered version to the selected version, leaving unknown IDs unchanged.
     fn resolve_scheme_id(&self, scheme: SchemeId) -> SchemeId {
         self.scheme_aliases.get(&scheme).copied().unwrap_or(scheme)
     }