feat: native clipboard image sync (Linux, opt-in sync_images)

internal/dedup/dedup_test.go

@@ -69,6 +69,22 @@ func TestShouldAcceptNewContent(t *testing.T) {
 	}
 }
 
+func TestShouldIgnoreDuplicateImageHash(t *testing.T) {
+	f := NewFilter("machine-a")
+	f.MarkWrittenPayload(Payload{Mime: "image/png", Data: "aGVsbG8="})
+
+	p := Payload{
+		Mime:   "image/png",
+		Data:   "aGVsbG8=",
+		Ts:     time.Now().UnixNano(),
+		Origin: "machine-b",
+	}
+
+	if !f.ShouldIgnore(p) {
+		t.Error("should ignore image payload with recently written data hash")
+	}
+}
+
 func TestCacheEviction(t *testing.T) {
 	f := NewFilter("machine-a")