feat(ppmck): mckc準拠の構文拡張とIR保持コマンド追加

- @をデューティ比、qをクオンタイズに修正（mckc原本準拠）
- ^タイ、Dディチューン、sスイープ、v+/v-相対音量を追加
- @v/@@/@MP/@EP/@EN エンベロープ・LFO系を構文解析してIR保持
- 上記IR保持コマンドは合成未対応を SEMANTIC_UNSUPPORTED_FEATURE で警告
- Design.md / MML_BNF.md を更新
- 全200テスト + ruff チェック通過

1 files changed, 73 insertions, 1 deletions

diff --git a/tests/test_lexer.py b/tests/test_lexer.py
index 64fa17c..1d7f8e7 100644
--- a/tests/test_lexer.py
+++ b/tests/test_lexer.py
@@ -4,12 +4,13 @@ from mml_composemusic_mcp.lexer import TokenType, tokenize
 
 
 def test_ppmck_tokens():
-    source = "A t150 l8 o4 v15 q2\nc d e f"
+    source = "A t150 l8 o4 v15 @2\nc d e f"
     tokens = tokenize(source, "ppmck")
     types = [t.type for t in tokens]
     assert TokenType.TRACK_HEADER in types
     assert TokenType.TEMPO in types
     assert TokenType.NOTE in types
+    assert TokenType.DUTY in types
 
 
 def test_pyxel_tokens():
@@ -35,3 +36,74 @@ def test_ppmck_invalid_token():
 def test_pyxel_invalid_token():
     tokens = tokenize("0: T120 L4 O4 X C", "pyxel")
     assert any(t.type == TokenType.INVALID for t in tokens)
+
+
+def test_ppmck_at_duty():
+    tokens = tokenize("A @2 c", "ppmck")
+    assert any(t.type == TokenType.DUTY for t in tokens)
+
+
+def test_ppmck_quantize():
+    tokens = tokenize("A q4 c", "ppmck")
+    assert any(t.type == TokenType.QUANTIZE for t in tokens)
+
+
+def test_ppmck_tie_cmd():
+    tokens = tokenize("A c4 ^4", "ppmck")
+    assert any(t.type == TokenType.TIE_CMD for t in tokens)
+
+
+def test_ppmck_detune():
+    tokens = tokenize("A D10 c", "ppmck")
+    assert any(t.type == TokenType.DETUNE for t in tokens)
+
+
+def test_ppmck_sweep():
+    tokens = tokenize("A s1,2 c", "ppmck")
+    assert any(t.type == TokenType.SWEEP for t in tokens)
+
+
+def test_ppmck_rel_vol():
+    tokens = tokenize("A v+5 v-3 c", "ppmck")
+    assert any(t.type == TokenType.REL_VOL_UP for t in tokens)
+    assert any(t.type == TokenType.REL_VOL_DOWN for t in tokens)
+
+
+def test_ppmck_vol_env():
+    tokens = tokenize("A @v0 c", "ppmck")
+    assert any(t.type == TokenType.VOL_ENV for t in tokens)
+
+
+def test_ppmck_vol_env_def():
+    tokens = tokenize("@v0 = { 15, 10, | 5 }", "ppmck")
+    assert any(t.type == TokenType.VOL_ENV for t in tokens)
+    assert any(t.type == TokenType.BRACE_OPEN for t in tokens)
+    assert any(t.type == TokenType.BRACE_CLOSE for t in tokens)
+
+
+def test_ppmck_lfo_def():
+    tokens = tokenize("@MP0 = { 0, 10, 5, 0 }", "ppmck")
+    assert any(t.type == TokenType.LFO_DEF for t in tokens)
+
+
+def test_ppmck_lfo_use_off():
+    tokens = tokenize("A MP1 MPOF c", "ppmck")
+    assert any(t.type == TokenType.LFO_USE for t in tokens)
+    assert any(t.type == TokenType.LFO_OFF for t in tokens)
+
+
+def test_ppmck_pitch_env():
+    tokens = tokenize("A EP1 EPOF c", "ppmck")
+    assert any(t.type == TokenType.PITCH_ENV_USE for t in tokens)
+    assert any(t.type == TokenType.PITCH_ENV_OFF for t in tokens)
+
+
+def test_ppmck_note_env():
+    tokens = tokenize("A EN1 ENOF c", "ppmck")
+    assert any(t.type == TokenType.NOTE_ENV_USE for t in tokens)
+    assert any(t.type == TokenType.NOTE_ENV_OFF for t in tokens)
+
+
+def test_ppmck_duty_env_use():
+    tokens = tokenize("A @@0 c", "ppmck")
+    assert any(t.type == TokenType.DUTY_ENV_USE for t in tokens)