feat(mtc): .mt 脚本编译器落地 + pybot 扬声器静音语义

mtc 新模块：命令式动作脚本（Python DSL）→ .mt 矩阵编译器，非阻塞时间轴 IR（重叠截断/rest 静止值）+ 10ms 栅格化，产物可由 pybot/bot4cj 直接执行；34 测试全绿（含 pybot parser e2e）。

pybot speaker.py：frequency<=0 改为静音节拍（仅 sleep 保时序，不再钳到 min_f 低鸣），对齐仓颉版 sleep 占位语义；mtc Beep 通道 rest=0，段前/段间/段后回落静音，两侧语义闭环。

修复 test_actpred_compatibility 过时断言（99c1bc1 首行分解为重复微步 19→20 帧时漏改，14→15）。

文档三处同步：根 README 回填 memdb/pybot/actpred 并新增 mtc（模块表+端口一览+章节），MODULES/ARCHITECTURE 同步 mtc，新建 mtc/README.md。

mtc/tests/test_e2e.py

@@ -0,0 +1,64 @@
+"""端到端：mtc 编译产物 → pybot MatrixParser 解析断言
+
+验证闭环：编译产物必须被 pybot 零修改解析（列数一致、Q05 表头
+'设备.参数' 校验、栅格行数与数值逐一比对）。
+"""
+
+from mtc.dsl import compile_script
+from tests.conftest import load_pybot_parser
+from tests.test_emit import EXAMPLE
+
+
+def _parse(mt_text):
+    parser_mod = load_pybot_parser()
+    parser = parser_mod.MatrixParser(mt_text)
+    objects = []
+    while True:
+        obj = parser.parse()
+        if obj is None:
+            break
+        objects.append(obj)
+    return objects
+
+
+def test_compiled_mt_parses_with_pybot():
+    objs = _parse(compile_script(EXAMPLE)[0])
+    names = [o.name for o in objs]
+    assert names == ["Servo", "Speaker", "Action"]
+    action = objs[names.index("Action")]
+    assert action.size == 11           # 表头 + 10 栅格行
+    assert action.col == 4             # s1/s2 + spk.frequency + spk.delay
+    for row in action.values:          # 列数一致（DoesNotSync 不触发）
+        assert len(row) == action.col
+
+
+def test_compiled_action_grid_values():
+    objs = _parse(compile_script(EXAMPLE)[0])
+    action = [o for o in objs if o.name == "Action"][0]
+    assert action.values[0] == ["s1.angle", "s2.angle",
+                                "spk.frequency", "spk.delay"]
+    grid = action.values[1:]
+    assert [r[0] for r in grid] == [str(i) for i in range(1, 11)]
+    assert [r[1] for r in grid] == ["0"] * 5 + ["4", "8", "12", "16", "20"]
+    assert {r[2] for r in grid} == {"0"}       # 无 Beep：frequency 恒 0
+    assert {r[3] for r in grid} == {"10"}
+
+
+def test_compiled_mt_roundtrips_through_pybot():
+    """编译产物经 pybot 解析→序列化→再解析等价（roundtrip 自检）"""
+    import io
+    parser_mod = load_pybot_parser()
+    objs = _parse(compile_script(EXAMPLE)[0])
+    out = io.StringIO()
+    parser_mod.MatrixSaver(out).save(objs)
+    objs2 = _parse(out.getvalue())
+    assert [(a.name, a.values) for a in objs] == \
+           [(b.name, b.values) for b in objs2]
+
+
+def test_q05_header_contract_holds():
+    """@Action 全部列名恰含一个 '.'（pybot robot._validate_action 契约）"""
+    objs = _parse(compile_script(EXAMPLE)[0])
+    action = [o for o in objs if o.name == "Action"][0]
+    for col in action.values[0]:
+        assert col.count(".") == 1