Strip dead_code allowances

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

backends/mizan-tauri/README.md

@@ -138,7 +138,6 @@ distributed slice's entries) and prints `mizan_core::build_ir()`:
 // #[derive(Mizan)] / #[mizan::client] registrations so the linker
 // keeps them in the final binary.
 
-#[allow(dead_code)]
 fn _force_link() {
     use my_app_lib::commands;
     let _ = commands::greet;

frontends/mizan-rust/src/context.rs

@@ -60,7 +60,6 @@ pub type FetchFn = Arc<
 
 
 struct ContextEntry {
-    #[allow(dead_code)]
     params: Value,
     tx: watch::Sender<ContextStateRaw>,
     fetch_fn: FetchFn,

frontends/mizan-rust/src/error.rs

@@ -74,7 +74,6 @@ enum Envelope {
     Django {
         // Django form is `{"error": true, "code": ..., "message": ..., "details": ...}`.
         // `error` is a bool sentinel; the actual fields are siblings.
-        #[allow(dead_code)]
         error: bool,
         code: Option<String>,
         message: Option<String>,