chore: pick up cadcodec #47 and cadkernel #66; guard the re-align length

- acadrust 7ea4247: clamped-knot degree and MINSERT reservation fixes
  (cadcodec #47). cadkernel a0b962a: dogleg fails on a non-finite
  Jacobian (cadkernel #66) and pins the same codec rev, so one acadrust
  stays in the graph.
- The axis re-alignment from #1361 retains its transformed length through
  retain_segment_length, which holds a zero-length segment with per-axis
  differences instead of a P2PDistance whose gradient is NaN there.

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>

crates/ocs_plugin_api/Cargo.toml

@@ -14,7 +14,7 @@ serde = { version = "1", features = ["derive"] }
 # Pulled in only by the `host` feature, which adds the `acadrust`-typed
 # `HostApi` runtime surface. The default crate stays dependency-free so engine
 # crates and external tooling can depend on the manifest/ribbon contract cheaply.
-acadrust = { git = "https://github.com/HakanSeven12/cadcodec.git", rev = "8a28c21", optional = true, features = ["serde"] }
+acadrust = { git = "https://github.com/HakanSeven12/cadcodec.git", rev = "7ea4247", optional = true, features = ["serde"] }
 
 # Runtime IPC and serialization (host feature only).
 interprocess = { version = "2", optional = true }
@@ -38,7 +38,7 @@ serde_json = "1"
 serde = { version = "1", features = ["derive"] }
 cargo-lock = "11"
 # acadrust is scanned at build time to generate the embedded type registry.
-acadrust = { git = "https://github.com/HakanSeven12/cadcodec.git", rev = "8a28c21", features = ["serde"] }
+acadrust = { git = "https://github.com/HakanSeven12/cadcodec.git", rev = "7ea4247", features = ["serde"] }
 
 [dev-dependencies]
 serde_json = "1"