feat: complete task 4 - fix scanner diff.go TypeFilter.suppressed to use centralized filter

internal/scanner/diff.go

@@ -2,6 +2,7 @@ package scanner
 
 import (
 	"naviwatcher/internal/database"
+	"naviwatcher/internal/musicbrainz"
 )
 
 // MissingRelease describes an external release that has no sufficiently similar
@@ -34,23 +35,13 @@ type TypeFilter struct {
 // secondary types, matching musicbrainz.FilterReleaseGroups so both the
 // cache-miss (store-time) and read-time paths agree.
 func (f TypeFilter) suppressed(ext database.ExternalRelease) bool {
-	if f.IgnoreSingles && (ext.Type == "Single" || hasType(ext.SecondaryTypes, "Single")) {
-		return true
+	// Use the centralized filtering logic from musicbrainz package
+	opts := musicbrainz.FilterOptions{
+		IgnoreSingles:      f.IgnoreSingles,
+		IgnoreCompilations: f.IgnoreCompilations,
 	}
-	if f.IgnoreCompilations && (ext.Type == "Compilation" || hasType(ext.SecondaryTypes, "Compilation")) {
-		return true
-	}
-	return false
-}
-
-// hasType reports whether types contains want.
-func hasType(types []string, want string) bool {
-	for _, t := range types {
-		if t == want {
-			return true
-		}
-	}
-	return false
+	filtered := musicbrainz.ApplyTypeToggles([]database.ExternalRelease{ext}, opts)
+	return len(filtered) == 0
 }
 
 // FindMissingReleases compares an artist's external discography against the