fix(local): drop a leading track number from an untagged filename

CHANGELOG.md

@@ -49,6 +49,8 @@ adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
   tracks it queued, instead of keeping a pause button over its cover.
 - Lyrics timed with hours, such as `[01:02:03.00]`, show at the right moment instead of being
   skipped.
+- An untagged song named like `01. Title` keeps the title and drops the track number, instead
+  of using the whole filename.
 - Deezer playlists and favorites show the day they were added or last changed, instead of leaving
   the date column blank.
 - A Deezer song whose explicit flag arrives as a number still shows the explicit mark.

crates/music/src/local/wire.rs

@@ -180,7 +180,18 @@ fn infer_from_stem(stem: &str) -> (Option<String>, Option<String>) {
             return (Some(left.to_owned()), Some(right.to_owned()));
         }
     }
-    (None, None)
+    numbered(stem)
+        .map(|title| (Some(title), None))
+        .unwrap_or((None, None))
+}
+
+fn numbered(stem: &str) -> Option<String> {
+    let (digits, rest) = stem.split_once('.')?;
+    if digits.is_empty() || digits.len() > 3 || !digits.chars().all(|c| c.is_ascii_digit()) {
+        return None;
+    }
+    let rest = rest.trim();
+    (!rest.is_empty()).then(|| rest.to_owned())
 }
 
 struct FallbackProbe {