fix(version): strip punctuation when scanning minimum semver

Treat trailing sentence punctuation as non-semver noise when extracting the minimum wire-compat version from announcement_tip.toml.

Refs #539

code-rs/code-version/src/lib.rs

@@ -40,7 +40,7 @@ fn extract_max_semver(input: &'static str) -> Option<&'static str> {
 
     for token in input.split_whitespace() {
         let candidate = token.trim_matches(|ch: char| {
-            !(ch.is_ascii_alphanumeric() || matches!(ch, '.' | '-' | '+' | 'v'))
+            !(ch.is_ascii_alphanumeric() || matches!(ch, '-' | '+' | 'v'))
         });
         if candidate.is_empty() {
             continue;
@@ -128,6 +128,12 @@ mod tests {
         assert_eq!(extract_max_semver(input), Some("0.102.1"));
     }
 
+    #[test]
+    fn extract_max_semver_strips_sentence_punctuation() {
+        let input = "Upgrade to 0.99.0. Then 0.98.1.";
+        assert_eq!(extract_max_semver(input), Some("0.99.0"));
+    }
+
     #[test]
     fn configured_minimum_defaults_to_semver() {
         assert!(parse_semver_triplet(min_wire_compat_version()).is_some());