feat: 回忆录证据血缘与内部评测可追溯，顺带对齐本地评测台与 CI

数据库与模型：新增多版迁移（章节证据快照、对话血缘、记忆事实/时间线 lineage 等），把「成稿 ↔ 对话/记忆」的溯源信息落到表结构里。
业务链路：会话与 WS、回忆录/故事流水线、记忆写入与 enrichment 等跟着接上线索与快照；新增章节证据快照与评测侧 EvalTraceService 等模块，方便组评审用的证据包。
内部评测：自动化 run 与手工 memoir 评审共用可追溯证据；rubric/ judge 相关脚本与文档有配套调整。
app-eval-web：Memoir/实验详情里能展开看证据摘要与 evidence_trace（含对话轮次 id）；Vite 代理与 development.sh 注入的 API 端口与当前默认内部评测端口一致，避免改端口后页面连错服务。
工程杂项：GitHub Actions / 仓库说明有更新；各适配器与支付/配额/plan 等多处为小改动或跟随主改动的收尾；新增/扩充了?

api/app/adapters/tts/openai_tts.py

@@ -1,27 +1,38 @@
 """OpenAI TTS adapter — implements TTSProvider port."""
 
+import asyncio
 from io import BytesIO
 
 from openai import OpenAI
 
+from app.core.logging import get_logger
+
+logger = get_logger(__name__)
+
 
 class OpenAITTSProvider:
     def __init__(self, api_key: str, model: str = "tts-1"):
         self._client = OpenAI(api_key=api_key) if api_key else None
         self._model = model
 
+    def _synthesize_sync(self, text: str, voice: str) -> bytes:
+        if not self._client:
+            return b""
+        response = self._client.audio.speech.create(
+            model=self._model,
+            voice=voice,
+            input=text,
+        )
+        buf = BytesIO()
+        for chunk in response.iter_bytes():
+            buf.write(chunk)
+        return buf.getvalue()
+
     async def synthesize(self, text: str, voice: str = "alloy") -> bytes:
         if not self._client:
             return b""
         try:
-            response = self._client.audio.speech.create(
-                model=self._model,
-                voice=voice,
-                input=text,
-            )
-            buf = BytesIO()
-            for chunk in response.iter_bytes():
-                buf.write(chunk)
-            return buf.getvalue()
-        except Exception:
+            return await asyncio.to_thread(self._synthesize_sync, text, voice)
+        except Exception as e:
+            logger.warning("OpenAI TTS synthesize failed: {}", e)
             return b""