Replace em dashes with hyphens across docs and comments

src/inference/mod.rs

@@ -8,7 +8,7 @@ pub struct Detection {
 
 /// Stand-in for real ONNX Runtime inference (the `ort` crate, using a model
 /// trained on failure images). Always reports one fixed "failure" so the
-/// rest of the pipeline — reporting, acking the stream entry — has
+/// rest of the pipeline - reporting, acking the stream entry - has
 /// something to do and can be tested without a real model file.
 ///
 /// Swap this out once you're comfortable with the pipeline around it:

src/main.rs

@@ -23,7 +23,7 @@ async fn main() -> anyhow::Result<()> {
     let mut reporter = Reporter::connect(&config.redis_url).await?;
 
     // Consumer groups have to exist before you can read from them. This
-    // fails with "BUSYGROUP" if it already exists — that's fine, ignore it.
+    // fails with "BUSYGROUP" if it already exists - that's fine, ignore it.
     let _: redis::RedisResult<String> = conn
         .xgroup_create_mkstream(&config.frame_stream, &config.consumer_group, "$")
         .await;

src/reporter/mod.rs

@@ -17,11 +17,11 @@ impl Reporter {
         Ok(Self { redis })
     }
 
-    /// Publishes to Redis (real — this is what `continuum-backend`'s
+    /// Publishes to Redis (real - this is what `continuum-backend`'s
     /// WebSocket fan-out subscribes to, for live operator-console alerts).
     ///
     /// A real version would also `INSERT` into Postgres here via `sqlx` for
-    /// the permanent audit trail — that's left as a `println!` for now;
+    /// the permanent audit trail - that's left as a `println!` for now;
     /// come back to it once async SQL feels comfortable.
     pub async fn report(&mut self, printer_id: &str, detections: &[Detection]) -> anyhow::Result<()> {
         let best = &detections[0];