Patcher: disclaimer, every mod can be unticked, hot cue docs

- A disclaimer (mods and patcher developed with Claude Code, at your own
  risk) must be accepted by typing yes, or with --accept, before a build.
- Unticking a mod unticks what needs it instead of ticking it back, so
  code can be unticked; hotcuekeys needs cuecolours.
- beatjump starts unticked and is marked with its faults on a player.
- README: the hot cue keys (play, gate, set, delete, LEDs).

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

test_patcher.py

@@ -93,3 +93,35 @@ def test_boot_area_tampering_caught():
     bad = upd.join([sections[0].blob, upd.encode_section(main.header, recs), sections[2].blob])
     with pytest.raises(upd.UpdError, match='boot loader'):
         upd.verify(bad, stock, stock.application)
+
+
+MODS = [('code', '', True, ''), ('utility', '', True, ''), ('overview', '', True, ''),
+        ('beatjump', '', True, ''), ('cuecolours', '', True, ''), ('hotcuekeys', '', True, '')]
+
+
+def test_every_mod_can_be_unticked():
+    chosen = {m[0] for m in MODS}
+    cli._toggle(chosen, 'code', MODS)
+    assert 'code' not in chosen and 'utility' not in chosen     # what needs it goes with it
+    cli._toggle(chosen, 'cuecolours', MODS)
+    assert 'cuecolours' not in chosen and 'hotcuekeys' not in chosen
+    cli._toggle(chosen, 'hotcuekeys', MODS)
+    assert {'hotcuekeys', 'cuecolours'} <= chosen               # and ticking brings what it needs
+    cli._toggle(chosen, 'overview', MODS)
+    assert 'overview' not in chosen
+
+
+def test_disclaimer_must_be_accepted(monkeypatch):
+    monkeypatch.setattr(cli.sys.stdin, 'isatty', lambda: True, raising=False)
+    assert 'Claude Code' in cli.DISCLAIMER
+    cli.confirm(False, ask=lambda _: 'yes')
+    cli.confirm(True, ask=lambda _: pytest.fail('asked although accepted'))
+    for answer in ('', 'no', 'q'):
+        with pytest.raises(SystemExit, match='not accepted'):
+            cli.confirm(False, ask=lambda _: answer)
+
+
+def test_disclaimer_without_a_terminal(monkeypatch):
+    monkeypatch.setattr(cli.sys.stdin, 'isatty', lambda: False, raising=False)
+    with pytest.raises(SystemExit, match='--accept'):
+        cli.confirm(False)