Full correctness check against the docs: safer writes, reverts and texts

Safety
- Writes are serialized (Workspace.lock): two background jobs rebuilding one
  package (a sound and its subtitle applied side by side) lost an edit.
- A store copies a bank file or package as "original" only if it matches the
  shipped catalog (Workspace.unoriginal_files: in-memory sounds, bank copies of
  voice lines, subtitles); the editor refuses to switch stores while changes
  are applied. A second store could otherwise resurrect a reverted sound.
- Mod import in the editor asks before overwriting files changed outside the
  tool (it forced silently).
- Revert all in the editor reverts texts too; the uninstaller counts text
  edits before offering to delete the store.
- ackit restore-backup: the full-backup restore decisions.md described; it
  keeps the sounds of WADs without a full copy recorded.
- build_catalog also stops when a subtitle differs from the catalog.

Languages and texts
- Game.language() returns languages without voices (JPN, RUS, ...) and
  Game.voice_archive() their INT voices; ackit text --lang JPN works.
- Menu lookups parse one cached file (find & replace: minutes -> ms).
- Subtitles decode cp1252 as Windows does: the UTF-8-in-cp1252 line
  Speech_TAPE_J_Answer_1_00 (KOR/POL/POR/RUS) is written back byte-for-byte;
  SUB_KOR/SUB_RUS rebuilt from the original game (only those rows changed).
- Mods exported while another language is loaded keep name and line.

Other fixes
- Down-mix folds extra channels in at -3 dB (a 5.1 centre voice was dropped).
- e2e_editor no longer overwrites the user's settings.json; kill_game waits
  for the game to exit before reverts.
- Recorder handles Int32/UInt8 input and split frames; package block cache
  locked; conflict messages, CLI help examples, stale docstrings and doc
  references fixed; tests no longer read this PC's game language.

Docs (decisions, user guide, README, subtitles.md, banks.md, catalog README,
REPORT, NOTES, CLAUDE.md) updated; check_docs: 102 claims match. 148 tests;
e2e_features 9/9, e2e_editor and verify PASS; game original afterwards.

tests/test_cli.py

@@ -35,6 +35,26 @@ def test_cli_workflow(synth_game, tmp_path, capsys):
     run(capsys, "revert", "Speech_Synth_Radio_02", *g)
 
 
+def test_cli_text_language_without_voices(synth_game, capsys):
+    """--lang works for the languages that have only texts (INT voices are loaded for them, like the editor)."""
+    root, _ = synth_game
+    out = run(capsys, "text", "find", "--kind", "subs", "--game", root, "--lang", "RUS", "Строка")
+    assert "SUB:RUS:%s:0" % synth.SPEECH_EVENT in out and "1 match" in out
+
+
+def test_cli_restore_backup(synth_game, tmp_path, capsys):
+    root, _ = synth_game
+    g = ["--game", root, "--lang", "INT", "--store", str(tmp_path / "store")]
+    wav = str(tmp_path / "line.wav")
+    audio.save_wav(wav, *synth.tone(1.0, 44100, 660))
+    run(capsys, "replace", "Speech_Synth_Radio_02", wav, *g)
+    out = run(capsys, "restore-backup", *g)
+    assert "would copy back" in out and "--yes" in out                 # lists only
+    assert "Speech_Synth_Radio_02" in run(capsys, "status", *g)
+    assert "restored" in run(capsys, "restore-backup", "--yes", *g)
+    assert "game files are original" in run(capsys, "status", *g)
+
+
 def test_cli_errors_are_friendly(synth_game, capsys):
     root, _ = synth_game
     with pytest.raises(SystemExit) as e: