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/features/memoir/models.py

@@ -3,6 +3,7 @@ from sqlalchemy import (
     Boolean,
     Column,
     DateTime,
+    Float,
     ForeignKey,
     Integer,
     String,
@@ -34,11 +35,20 @@ class Chapter(Base):
     is_new = Column(Boolean, default=True)
     is_active = Column(Boolean, default=True)
     source_segments = Column(JSON, nullable=True)
+    # 物化当前 canonical 对应的证据闭包（segment / story / memory ids），供评测与审计；见 memoir/chapter_evidence_snapshot
+    evidence_bundle_json = Column(JSON, nullable=True)
+    # Phase C：指向当前生效的 chapter_evidence_snapshots 行（版本链可审计）
+    current_evidence_snapshot_id = Column(
+        String,
+        ForeignKey("chapter_evidence_snapshots.id", ondelete="SET NULL"),
+        nullable=True,
+    )
     # story-backed 章节：story 变更后标 True，由 Celery 重组 canonical_markdown
     markdown_compose_dirty = Column(Boolean, default=False, nullable=False)
     markdown_composed_at = Column(DateTime(timezone=True), nullable=True)
     # 与 canonical 同一生成时机物化；无签名 URL，读时 hydrate
     reading_segments_json = Column(JSON, nullable=True)
+    source_lineage_json = Column(JSON, nullable=True)
 
     user = relationship("User", back_populates="chapters")
     book = relationship("Book", back_populates="chapters")
@@ -69,6 +79,22 @@ class Chapter(Base):
         back_populates="chapter",
         cascade="all, delete-orphan",
     )
+    evidence_snapshots = relationship(
+        "ChapterEvidenceSnapshot",
+        back_populates="chapter",
+        foreign_keys="ChapterEvidenceSnapshot.chapter_id",
+        cascade="all, delete-orphan",
+    )
+    evidence_links = relationship(
+        "ChapterEvidenceLink",
+        back_populates="chapter",
+        cascade="all, delete-orphan",
+    )
+    current_evidence_snapshot = relationship(
+        "ChapterEvidenceSnapshot",
+        foreign_keys=[current_evidence_snapshot_id],
+        post_update=True,
+    )
 
 
 class MemoirImage(Base):
@@ -185,6 +211,60 @@ class ChapterStoryLink(Base):
     story = relationship("Story", back_populates="chapter_links")
 
 
+class ChapterEvidenceSnapshot(Base):
+    """章节证据闭包版本快照（一行 = 一次物化；current 指针在 Chapter 上）。"""
+
+    __tablename__ = "chapter_evidence_snapshots"
+
+    id = Column(String, primary_key=True)
+    chapter_id = Column(
+        String,
+        ForeignKey("chapters.id", ondelete="CASCADE"),
+        nullable=False,
+        index=True,
+    )
+    user_id = Column(String, ForeignKey("users.id"), nullable=False, index=True)
+    version_no = Column(Integer, nullable=False)
+    schema_version = Column(Integer, nullable=False, default=1)
+    segment_ids = Column(JSON, nullable=True)
+    conversation_ids = Column(JSON, nullable=True)
+    story_ids = Column(JSON, nullable=True)
+    memory_chunk_ids = Column(JSON, nullable=True)
+    memory_fact_ids = Column(JSON, nullable=True)
+    timeline_event_ids = Column(JSON, nullable=True)
+    summary_ids = Column(JSON, nullable=True)
+    notes = Column(JSON, nullable=True)
+    message_lineage_json = Column(JSON, nullable=True)
+    captured_at = Column(DateTime(timezone=True), default=utc_now)
+
+    chapter = relationship(
+        "Chapter",
+        back_populates="evidence_snapshots",
+        foreign_keys=[chapter_id],
+    )
+
+
+class ChapterEvidenceLink(Base):
+    """与 StoryEvidenceLink 对称：章节当前态绑定的结构化记忆 id（按快照刷新时整批替换）。"""
+
+    __tablename__ = "chapter_evidence_links"
+
+    id = Column(String, primary_key=True)
+    chapter_id = Column(
+        String,
+        ForeignKey("chapters.id", ondelete="CASCADE"),
+        nullable=False,
+        index=True,
+    )
+    evidence_type = Column(String, nullable=False)
+    evidence_id = Column(String, nullable=False)
+    role = Column(String, nullable=True)
+    weight = Column(Float, nullable=True)
+    created_at = Column(DateTime(timezone=True), default=utc_now)
+
+    chapter = relationship("Chapter", back_populates="evidence_links")
+
+
 class Book(Base):
     __tablename__ = "books"