fix: name missing game data apart from firmware

install.py

@@ -12559,14 +12559,30 @@ def _unavailable_lines(state: TuiState) -> list[str]:
     rows = {row["system"]: row for row in state.systems}
 
     def system(name: str) -> str:
-        return _tui_system_label(rows.get(name) or {"system": name}, titles)
+        label = _tui_system_label(rows.get(name) or {"system": name}, titles)
+        # An id no title names (jazz-jackrabbit-2) read as a raw key.
+        return label.replace("-", " ").title() if label == name else label
 
-    names = [f"{entry['dest']} ({system(entry['system'])})" if entry.get("system")
-             else entry["dest"] for entry in needed[:3]]
-    more = f" and {len(needed) - 3} more" if len(needed) > 3 else ""
-    return [f"Not available here, and needed to start "
-            f"{'its emulator' if len(needed) == 1 else 'their emulators'}: "
-            f"{', '.join(names)}{more}. Your own copy goes in the BIOS folder."]
+    def named(entries: list[dict]) -> str:
+        names = [f"{entry['dest']} ({system(entry['system'])})" if entry.get("system")
+                 else entry["dest"] for entry in entries[:3]]
+        more = f" and {len(entries) - 3} more" if len(entries) > 3 else ""
+        return f"{', '.join(names)}{more}"
+
+    # A game's own data is not firmware: on every RetroArch plan the one
+    # alarm named Jazz Jackrabbit 2's Anims.j2a, read as a broken install.
+    games = [entry for entry in needed if entry.get("category") == GAME_DATA]
+    firmware = [entry for entry in needed if entry.get("category") != GAME_DATA]
+    lines = []
+    if firmware:
+        lines.append(f"Not available here, and needed to start "
+                     f"{'its emulator' if len(firmware) == 1 else 'their emulators'}: "
+                     f"{named(firmware)}. Your own copy goes in the BIOS folder.")
+    if games:
+        lines.append(f"Game data not available here, read by "
+                     f"{'its game' if len(games) == 1 else 'their games'}: "
+                     f"{named(games)}. Copy it from your own copy of the game.")
+    return lines
 
 
 def tui_outcome(state: TuiState) -> tuple[str, list[str]]:

tests/test_install_tui.py

@@ -3921,6 +3921,25 @@ class ThePlanNumbersAddUp(unittest.TestCase):
                       "machine, 3 downloaded", screen)
 
 
+class GameDataIsNoFirmwareAlarm(unittest.TestCase):
+    """Every RetroArch plan named jazz2/Source/Anims.j2a (jazz-jackrabbit-2)
+    as the file needed to start an emulator: a game's data, under a raw id."""
+
+    def test_game_data_has_its_own_line(self):
+        state = checked_state()
+        state.systems = []
+        state.manifest = {**MANIFEST, "omitted_files": [
+            {"dest": "jazz2/Source/Anims.j2a", "system": "jazz-jackrabbit-2",
+             "required": True, "category": "game_data"},
+            {"dest": "missing.bin", "system": "sony-playstation", "required": True}]}
+        lines = install._unavailable_lines(state)
+        self.assertEqual(len(lines), 2, lines)
+        self.assertIn("needed to start its emulator: missing.bin", lines[0])
+        self.assertNotIn("Anims.j2a", lines[0])
+        self.assertIn("Game data not available here", lines[1])
+        self.assertIn("Anims.j2a (Jazz Jackrabbit 2)", lines[1])
+
+
 class NothingFoundIsSaid(unittest.TestCase):
     """With nothing detected the first screen was the list of 18 setups,
     with no line at 40x15 saying nothing was found, which the beginner's