add missing genre mapping and clippy lint fixes

src/genre.rs

@@ -292,6 +292,7 @@ pub static GENRE_MAPPINGS: LazyLock<HashMap<&'static str, &'static str>> = LazyL
         ("POP 1", "Pop"),
         ("POP 80s SYNTH", "Pop 80s"),
         ("POP 80s", "Pop 80s"),
+        ("POP 90s EURODANCE", "House Eurodance"),
         ("POP 90s", "Pop 90s"),
         ("POP CHILL 1", "Pop"),
         ("POP CHILL HITAAT", "Pop"),
@@ -327,7 +328,7 @@ static REGEX_SUBSTITUTES: LazyLock<[(Regex, &'static str); 5]> = LazyLock::new(|
         // Replace various opening bracket types with "("
         (Regex::new(r"[\[{]+").unwrap(), "("),
         // Replace various closing bracket types with ")"
-        (Regex::new(r"[\]}]+").unwrap(), ")"),
+        (Regex::new(r"[]}]+").unwrap(), ")"),
         // Collapse multiple consecutive opening parentheses into one
         (Regex::new(r"\(\s*\){2,}").unwrap(), "("),
         // Collapse multiple consecutive closing parentheses into one

src/state.rs

@@ -91,13 +91,10 @@ impl State {
 
     fn read_state() -> DashMap<PathBuf, TrackMetadata> {
         Self::get_state_path().map_or_else(DashMap::new, |file_path| match fs::read_to_string(file_path) {
-            Ok(contents) => match serde_json::from_str(&contents) {
-                Ok(map) => map,
-                Err(err) => {
-                    eprintln!("Failed to parse state file: {err}");
-                    DashMap::new()
-                }
-            },
+            Ok(contents) => serde_json::from_str(&contents).unwrap_or_else(|err| {
+                eprintln!("Failed to parse state file: {err}");
+                DashMap::new()
+            }),
             Err(err) => {
                 eprintln!("Failed to read state file: {err}");
                 DashMap::new()

src/track_renamer.rs

@@ -429,7 +429,7 @@ impl TrackRenamer {
     }
 
     /// Insert processed tracks and save state.
-    fn update_state(&self) -> anyhow::Result<()> {
+    fn update_state(&self) -> Result<()> {
         let (added_count, updated_count) = self
             .tracks
             .par_iter()