fix: count bundled gaps apart in each heading

cross_reference.py --emulator abuse printed "Gaps: 3 missing" above three
[BUNDLED] files, then "0 missing (need to be sourced)" in the total. The
heading and the total now read one count: bundled files appear as
"N bundled", never among the missing.

scripts/cross_reference.py

@@ -809,11 +809,16 @@ def print_report(
         if gaps == 0 and not show_clean:
             continue
 
-        parts = []
-        for key in ("bios", "data", "large_file", "missing"):
-            count = data.get(f"gap_{key}", 0)
-            if count:
-                parts.append(f"{count} {key}")
+        # Counted once, for the heading and the total alike: a file bundled
+        # with its emulator is not one to source.
+        emulator_bundled = sum(
+            1 for g in data["gap_details"]
+            if g.get("bundled") and g.get("source") == "missing"
+        )
+        counts = {key: data.get(f"gap_{key}", 0) for key in totals}
+        counts["missing"] -= emulator_bundled
+        counts["bundled"] = emulator_bundled
+        parts = [f"{count} {key}" for key, count in counts.items() if count]
         status = ", ".join(parts) if parts else "OK"
 
         systems = ", ".join(data["systems"])
@@ -842,13 +847,8 @@ def print_report(
 
         total_gaps += gaps
         for key in totals:
-            totals[key] += data.get(f"gap_{key}", 0)
-        emulator_bundled = sum(
-            1 for g in data["gap_details"]
-            if g.get("bundled") and g.get("source") == "missing"
-        )
+            totals[key] += counts[key]
         bundled += emulator_bundled
-        totals["missing"] -= emulator_bundled
 
     print(f"\n{'=' * 60}")
     print(f"Total: {total_gaps} undeclared files across {scope}")

tests/test_cross_reference_sources.py

@@ -21,6 +21,7 @@ from cross_reference import (  # noqa: E402
     _build_supplemental_index,
     cross_reference,
     entry_source,
+    print_report,
 )
 
 
@@ -54,6 +55,28 @@ class GapReportSources(unittest.TestCase):
         self.assertEqual(entry_source({"name": "ending.mid", "sha1": other}, index), "bios")
         self.assertEqual(entry_source({"name": "ending.mid", "md5": "1" * 32}, index), "bios")
 
+    def test_the_heading_and_the_total_count_bundled_files_alike(self):
+        """abuse printed "Gaps: 3 missing" above three [BUNDLED] files and
+        "0 missing (need to be sourced)" below."""
+        import contextlib
+        import io
+
+        report = {"abuse": {
+            "emulator": "Abuse", "systems": [], "gaps": 3, "total_files": 3,
+            "platform_covered": 0, "gap_missing": 3,
+            "gap_details": [
+                {"name": f"f{i}", "required": True, "source": "missing", "bundled": True,
+                 "note": ""}
+                for i in range(3)
+            ],
+        }}
+        with contextlib.redirect_stdout(io.StringIO()) as out:
+            print_report(report)
+        text = out.getvalue()
+        self.assertIn("Gaps: 3 bundled", text)
+        self.assertNotIn("3 missing", text)
+        self.assertIn("0 missing (need to be sourced)", text)
+
     def test_a_directory_does_not_stand_for_a_file(self):
         with tempfile.TemporaryDirectory(dir=REPO_ROOT / "tmp") as tmp:
             (Path(tmp) / "bios" / "cpcemu" / "ROM").mkdir(parents=True)