Use the codec audit and repair in place of OCS's corruption guard

Opening a drawing no longer drops entities with its own sanity checks or
rewrites knotless splines; recovery runs the codec's repair and records
its actions and unresolved issues in the drawing's notifications. Xref
merges keep every entity. The dropped-entity counts, their command-line
warnings, recovery report rows and the automation "purged" field go with
the guard.

AUDIT now reports the codec's audit (counts plus the first 50 issues) and
asks whether to fix; Yes applies the codec repair as one undo step.

Cargo: codec 325fa98, kernel dfca391, graph 5d4e713.

Co-Authored-By: Claude Opus 5.5 <[email protected]>

crates/ocs_plugin_api/Cargo.toml

@@ -15,7 +15,7 @@ serde_json = { version = "1", optional = true }
 # Pulled in only by the `host` feature, which adds the `opencadcodec`-typed
 # `HostApi` runtime surface. The default crate stays dependency-free so engine
 # crates and external tooling can depend on the manifest/ribbon contract cheaply.
-codec = { package = "opencadcodec", git = "https://github.com/HakanSeven12/opencadcodec.git", rev = "cb3ce6a", optional = true, features = ["serde"] }
+codec = { package = "opencadcodec", git = "https://github.com/HakanSeven12/opencadcodec.git", rev = "325fa98", optional = true, features = ["serde"] }
 
 # Runtime IPC and serialization (host feature only).
 interprocess = { version = "2", optional = true }
@@ -39,7 +39,7 @@ serde_json = "1"
 serde = { version = "1", features = ["derive"] }
 cargo-lock = "11"
 # opencadcodec is scanned at build time to generate the embedded type registry.
-codec = { package = "opencadcodec", git = "https://github.com/HakanSeven12/opencadcodec.git", rev = "cb3ce6a", features = ["serde"] }
+codec = { package = "opencadcodec", git = "https://github.com/HakanSeven12/opencadcodec.git", rev = "325fa98", features = ["serde"] }
 
 [dev-dependencies]
 serde_json = "1"

crates/ocs_save/Cargo.toml

@@ -10,6 +10,6 @@ publish = false
 # exactly one implementation. No UI/app dependencies — only the codec + serde.
 
 [dependencies]
-codec = { package = "opencadcodec", git = "https://github.com/HakanSeven12/opencadcodec.git", rev = "cb3ce6a", features = ["serde"] }
+codec = { package = "opencadcodec", git = "https://github.com/HakanSeven12/opencadcodec.git", rev = "325fa98", features = ["serde"] }
 bincode = "1.3"
 serde = { version = "1", features = ["derive"] }

crates/ocs_web_worker/Cargo.toml

@@ -8,7 +8,7 @@ publish = false
 crate-type = ["cdylib"]
 
 [dependencies]
-codec = { package = "opencadcodec", git = "https://github.com/HakanSeven12/opencadcodec.git", rev = "cb3ce6a", features = ["serde"] }
+codec = { package = "opencadcodec", git = "https://github.com/HakanSeven12/opencadcodec.git", rev = "325fa98", features = ["serde"] }
 bincode = "1.3"
 serde = { version = "1", features = ["derive"] }
 console_error_panic_hook = "0.1"