refactor: QQ → OBv11 重命名 + 平台格式统一抽象

- 所有对外称呼从 QQ 改为 OBv11（注释/提示词/日志/配置项）
- 新增 PlatformFormat 结构体，统一管理平台消息标记格式
- defaultPlatformFormats() 注册表替代硬编码 qqTargetRe
- extractProactiveMessage 改为 Thinker 方法，遍历格式注册表匹配
- 配置项重命名: QQ_BOT_PORT → OBV11_BOT_PORT, QQBotPort → OBv11BotPort
- 标记格式: 【QQ群聊】→【OBv11群聊】、【QQ私聊】→【OBv11私聊】

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

scripts/voice/speechbrain_fix.py

@@ -0,0 +1,21 @@
+"""
+Python 3.8 兼容性补丁: 修复 speechbrain 中的 list[int] 语法。
+在导入 speechbrain 之前 import 本模块即可。
+"""
+import speechbrain.dataio.sampler as _s
+# Force evaluation of the module to catch the error
+# The fix: monkey-patch before import completes
+import sys
+from speechbrain.dataio import sampler as _sampler_mod
+
+# Patch the problematic line: replace Optional[list[int]] with Optional["List[int]"]
+# This is done at the source level by editing the file
+import os
+_sp = os.path.join(os.path.dirname(_sampler_mod.__file__), "sampler.py")
+if os.path.exists(_sp):
+    with open(_sp) as f:
+        src = f.read()
+    if "from __future__ import annotations" not in src:
+        with open(_sp, "w") as f:
+            f.write("from __future__ import annotations\n" + src)
+        print("[speechbrain_fix] patched sampler.py for Python 3.8")