✨ feat: WP-02 角色域——完整生命周期、铸魂、内驱力与随缘

- 迁移 6：character（生命周期六态检查约束、起源、现实人物治理标记、道体基线、内驱力）+ character_version（baseline/first_statement/drive_revision/reforging/persona_candidate 五类不可变版本与审核态）
- 创建：手动与随缘（确定性词库组合，同种子同候选、一次一个——不是抽卡）；现实人物治理（已故拒绝、未声明授权拒绝）
- 启镜（draft→active + 首个 baseline 版本）与初照自陈（候选→确认归真并入道体）
- 生命周期端点：静修/归藏/复照（归档可恢复、复照不抹历史）+ 死亡两步确认（7 天冷静期可撤销、未满确认 422）；非法状态迁移 422
- 铸魂（显式 confirm 强确认，直接更新道体）与人格候选（pending→审核批准才并入道体，不静默覆盖）
- 内驱力编辑：写当前值并落 drive_revision 版本（可追溯，ADR-018）
- 测试 52 项全绿（+8）：状态机全路径、随缘确定性、现实人物三例、铸魂确认、候选审核与重复审核 409、跨域 fail-closed

backend/app/models.py

@@ -300,3 +300,77 @@ class RunEvent(Base):
         # Run 内 sequence 单调且唯一（重放去重的服务端保证）
         Index("uq_run_event_run_sequence", "run_id", "sequence", unique=True),
     )
+
+
+class CharacterVersion(Base):
+    """角色版本链：baseline/初照自陈/内驱力修订/铸魂/人格候选（不可变版本）。"""
+
+    __tablename__ = "character_version"
+
+    id: Mapped[str] = mapped_column(
+        String, primary_key=True, default=lambda: new_id("character_version_")
+    )
+    character_id: Mapped[str] = mapped_column(
+        ForeignKey("character.id", ondelete="cascade"), nullable=False, index=True
+    )
+    kind: Mapped[str] = mapped_column(String, nullable=False)
+    status: Mapped[str] = mapped_column(String, nullable=False, default="approved")
+    payload: Mapped[dict[str, Any]] = mapped_column(JSONB, nullable=False, default=dict)
+    created_at: Mapped[datetime] = mapped_column(
+        DateTime(timezone=True), nullable=False, server_default=func.now()
+    )
+
+    __table_args__ = (
+        CheckConstraint(
+            "kind IN ('baseline', 'first_statement', 'drive_revision', 'reforging', "
+            "'persona_candidate')",
+            name="kind_values",
+        ),
+        CheckConstraint("status IN ('pending', 'approved', 'rejected')", name="status_values"),
+    )
+
+
+class Character(Base):
+    """角色：稳定身份、生命周期状态、道体基线与内驱力（WP-02）。"""
+
+    __tablename__ = "character"
+
+    id: Mapped[str] = mapped_column(
+        String, primary_key=True, default=lambda: new_id("character_")
+    )
+    personal_domain_id: Mapped[str] = mapped_column(
+        ForeignKey("personal_domain.id", ondelete="cascade"), nullable=False, index=True
+    )
+    name: Mapped[str] = mapped_column(String, nullable=False)
+    # 生命周期：灵胚 → 启镜 → 静修/归藏（可复照）；死亡走两步确认，deceased 不可逆
+    status: Mapped[str] = mapped_column(String, nullable=False, default="draft")
+    origin: Mapped[str] = mapped_column(String, nullable=False, default="original")
+    based_on_real_person: Mapped[bool] = mapped_column(nullable=False, default=False)
+    real_person_attested: Mapped[bool] = mapped_column(nullable=False, default=False)
+    # 道体基线（identity_baseline）：最小稳定身份锚点，普通对话/记忆不可静默覆盖
+    identity_baseline: Mapped[dict[str, Any]] = mapped_column(JSONB, nullable=False, default=dict)
+    # 内驱力（character_drives）：声明式动机维度，用户可审阅编辑（ADR-018）
+    drives: Mapped[list[dict[str, Any]]] = mapped_column(JSONB, nullable=False, default=list)
+    current_version_id: Mapped[str | None] = mapped_column(
+        ForeignKey("character_version.id", ondelete="set null", use_alter=True), nullable=True
+    )
+    death_requested_at: Mapped[datetime | None] = mapped_column(
+        DateTime(timezone=True), nullable=True
+    )
+    created_at: Mapped[datetime] = mapped_column(
+        DateTime(timezone=True), nullable=False, server_default=func.now()
+    )
+    updated_at: Mapped[datetime] = mapped_column(
+        DateTime(timezone=True), nullable=False, server_default=func.now(), onupdate=func.now()
+    )
+
+    __table_args__ = (
+        CheckConstraint(
+            "status IN ('draft', 'active', 'resting', 'archived', 'death_pending', 'deceased')",
+            name="status_values",
+        ),
+        CheckConstraint(
+            "origin IN ('original', 'serendipity', 'template', 'import', 'fork')",
+            name="origin_values",
+        ),
+    )