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_app.py

@@ -223,6 +223,60 @@ def test_mod_with_texts(win, tmp_path):
     tx.revert_all()
 
 
+def test_revert_all_reverts_sounds_and_texts(win):
+    w, root, _ = win
+    before = files(root)
+    tx = w.ws.texts
+    tx.apply({"SUB:INT:%s:0" % synth.SPEECH_EVENT: "Undo me.", "MENU:INT:FRONTEND.int:Menu:Quit": "Leave"})
+    s = w.ws.sound("CHR_RadioScanner_1")
+    w.ws.apply([(s, synth.wem(0.5, 1200), {})])
+    w.revert_all()
+    assert files(root) == before and not w.ws.store.entries and not tx.records()
+
+
+def test_mod_import_asks_before_overwriting(win, tmp_path):
+    """Files changed outside the editor are overwritten by a mod only when the user confirms."""
+    w, root, originals = win
+    s = w.ws.sound("CHR_RadioScanner_1")
+    w.ws.apply([(s, synth.wem(0.5, 1200), {})])
+    pkg = str(tmp_path / "m.acmod")
+    w.export_mod_dialog(path=pkg, keys=[s.key], title="m")
+    other = synth.wem(0.4, 150)
+    inject(w.ws.wad_path(s), {s.target: other}, {s.target: w.ws.limit(s)})      # another tool writes the slot
+    asked = []
+    w.confirm = lambda *a: asked.append(a) or False
+    w.import_mod_dialog(path=pkg, confirm=False)
+    assert asked and w.ws.current_bytes(s) == other                            # declined: left alone
+    w.confirm = lambda *a: True
+    w.import_mod_dialog(path=pkg, confirm=False)
+    assert w.ws.state(s) == W.MODIFIED
+    w.revert_all()
+
+
+def test_store_cannot_change_while_changes_are_applied(win, tmp_path, monkeypatch):
+    from app import mainwindow
+    w, root, _ = win
+    s = w.ws.sound("CHR_RadioScanner_1")
+    w.ws.apply([(s, synth.wem(0.5, 1200), {})])
+    store = w.ws.store.root
+
+    class Dlg:
+        def __init__(self, settings, parent):
+            pass
+
+        def exec(self):
+            return mainwindow.QDialog.DialogCode.Accepted
+
+        def values(self):
+            return dict(w.settings, store_root=str(tmp_path / "elsewhere"))
+    monkeypatch.setattr(mainwindow, "SettingsDialog", Dlg)
+    told = []
+    w.inform = lambda *a: told.append(a)
+    w.settings_dialog()
+    assert told and w.settings.get("store_root") != str(tmp_path / "elsewhere") and w.ws.store.root == store
+    w.revert_all()
+
+
 def test_text_undone_outside_shows_banner(win):
     w, root, _ = win
     tx = w.ws.texts
@@ -387,3 +441,18 @@ def test_editor_panel_fits_its_contents(win):
     need = w.editor.sizeHint().height()
     assert w.scroll.viewport().height() >= need - 2, (w.scroll.viewport().height(), need)
     assert w.vsplit.sizes()[0] >= 160
+
+
+def test_recorder_sample_formats(qapp):
+    """Input devices may deliver 16/32-bit integer, 8-bit or float samples, and reads can split a frame."""
+    import numpy as np
+    from app.audioio import Recorder
+    r = Recorder()
+    x = np.array([[0.5, -0.25], [0.125, -1.0]], np.float32)
+    for sample, raw in (("<i2", (x * 32768).astype("<i2").tobytes()), ("<i4", (x * 2147483648.0).astype("<i4").tobytes()),
+                        ("u1", (x * 128 + 128).astype("u1").tobytes()), ("<f4", x.astype("<f4").tobytes())):
+        r.chunks, r._rest, r.channels, r.sample = [], b"", 2, sample
+        r._ingest(raw[:3])
+        r._ingest(raw[3:])
+        got, _ = r.stop()
+        assert np.allclose(got, x, atol=1 / 128), sample