General improvements on API

crates/ocs_doc_api/src/transport/inproc.rs

@@ -1,4 +1,4 @@
-//! In-process transport: drives a `DocApiBackend` directly, inline.
+//! In-process transport (plan §7): drives a `DocApiBackend` directly, inline.
 //! Used by in-tree/built-in plugins and host tests. Thread-safe via a mutex so
 //! many handles across many threads share it (calls are serialized).
 
@@ -17,9 +17,7 @@ pub struct InProcess<B: DocApiBackend> {
 
 impl<B: DocApiBackend> InProcess<B> {
     pub fn new(backend: B) -> Self {
-        Self {
-            backend: Mutex::new(backend),
-        }
+        Self { backend: Mutex::new(backend) }
     }
     /// Borrow the backend immutably (test/introspection helper).
     pub fn backend(&self) -> std::sync::MutexGuard<'_, B> {
@@ -29,11 +27,9 @@ impl<B: DocApiBackend> InProcess<B> {
 
 impl<B: DocApiBackend + Send> Transport for InProcess<B> {
     fn apply(&self, req: DocApiEnvelope) -> ApiResult<Receipt> {
-        req.validate_version()?;
-        let mut backend = self
-            .backend
-            .lock()
-            .map_err(|_| crate::error::ApiError::Transport("in-process backend poisoned".into()))?;
+        let mut backend = self.backend.lock().map_err(|_| {
+            crate::error::ApiError::Transport("in-process backend poisoned".into())
+        })?;
         match req.body {
             EnvelopeBody::Op(op) => executor::apply_op(&mut *backend, op),
             EnvelopeBody::Queries(queries) => executor::apply_queries(&mut *backend, queries),