Replace em dashes with hyphens across docs and comments

src/printer/bambu_commands/print.rs

@@ -1,7 +1,7 @@
 //! The ongoing print-state push (root key "print"). Doesn't carry a
-//! `CommandEnvelope` — no `sequence_id`/`command` seen on this one in the
+//! `CommandEnvelope` - no `sequence_id`/`command` seen on this one in the
 //! real capture, and it may genuinely not have them (an async push, not a
-//! reply to a specific request) — revisit if a real capture proves
+//! reply to a specific request) - revisit if a real capture proves
 //! otherwise.
 
 #[derive(serde::Deserialize, Debug)]
@@ -15,12 +15,12 @@ pub struct PrintReport {
     pub xcam: Option<XcamSettings>,
     pub xcam_status: Option<String>,
     // The real payload has a lot more fields than shown here (this
-    // example was truncated) — add them the same way, one field per line,
+    // example was truncated) - add them the same way, one field per line,
     // `Option<T>` for anything that isn't always present.
 }
 
 /// Bambu's own naming has the outer container and the inner array both
-/// called `ams` — `print.ams.ams`, not a typo here, just what the printer
+/// called `ams` - `print.ams.ams`, not a typo here, just what the printer
 /// actually sends.
 #[derive(serde::Deserialize, Debug)]
 pub struct AmsState {
@@ -37,13 +37,13 @@ pub struct AmsUnit {
 }
 
 /// A tray slot is either empty (just `id`) or loaded (the full field set)
-/// — two genuinely different shapes, not one shape with optional fields,
+/// - two genuinely different shapes, not one shape with optional fields,
 /// so this is an untagged enum rather than a struct full of `Option<T>`.
 /// `#[serde(deny_unknown_fields)]` on `Empty` is load-bearing: untagged
 /// enums try variants in order, and without it a *loaded* tray (which has
 /// every field `Empty` allows, plus more) would incorrectly match `Empty`
 /// first, since a plain struct doesn't reject extra fields by default.
-/// Verified this the hard way — see git history.
+/// Verified this the hard way - see git history.
 #[derive(serde::Deserialize, Debug)]
 #[serde(untagged)]
 pub enum AmsTray {