Merge claudedo/42d103cfae72447aa048e28121d6e733

src/ClaudeDo.App/Program.cs

@@ -119,7 +119,9 @@ sealed class Program
             var releases = sp.GetRequiredService<IReleaseClient>();
             var informational = Assembly.GetEntryAssembly()?
                 .GetCustomAttribute<AssemblyInformationalVersionAttribute>()?.InformationalVersion;
-            // Strip MinVer build metadata ("+sha") and any prerelease suffix for the update-compare.
+            // Strip MinVer build metadata ("+sha") only — keep the prerelease suffix
+            // (e.g. "-alpha.0.14"), VersionComparer needs it to tell a dev build on
+            // main apart from a tagged release of the same numeric core.
             var version = (informational ?? "0.0.0").Split('+')[0];
             return new UpdateCheckService(releases, version);
         });

src/ClaudeDo.Releases/VersionComparer.cs

@@ -10,7 +10,17 @@ public static class VersionComparer
                         | !Version.TryParse(CoreVersion(current), out var cv);
 
         if (unparseable) return new VersionCompareResult(false, true);
-        return new VersionCompareResult(lv > cv, false);
+        if (lv != cv) return new VersionCompareResult(lv > cv, false);
+
+        // Same numeric core: a MinVer dev build sitting on main between two tags
+        // reports a prerelease of its own guessed *next* version (e.g. after tag
+        // v1.4.0, main computes "1.4.1-alpha.0.12" — already ahead of the tag by
+        // core, handled above). But when a real release is tagged at exactly that
+        // guessed version, the tag itself has no prerelease suffix while a still-
+        // running dev build does — that dev build must still count as older, or a
+        // genuine new release would be silently missed.
+        var isNewer = HasPrerelease(current) && !HasPrerelease(latest);
+        return new VersionCompareResult(isNewer, false);
     }
 
     // Reduce a tag/version to its numeric core: drop a leading "v", MinVer build
@@ -18,4 +28,7 @@ public static class VersionComparer
     // which System.Version can parse. So "v1.0.2-alpha+abc" -> "1.0.2".
     private static string CoreVersion(string value)
         => (value ?? "").TrimStart('v', 'V').Split('+')[0].Split('-')[0];
+
+    private static bool HasPrerelease(string value)
+        => (value ?? "").TrimStart('v', 'V').Split('+')[0].Contains('-');
 }