feat(review): 人物塑造 advisory 审（第五审，仅建议不阻断验收）

写→审链新增第五审「人物塑造」（灵感③/D2）：advisory 单维——仅建议、不阻断
验收（不进 conflicts、不碰 assert_conflicts_resolved、不入 REVIEW_RESERVED_NAMES）；
只做人物塑造、不做氛围。

- SPEC characterization_spec（analyst，reads=("characters",)，writes=()）+
  prompts/characterization.md（只读、显式忽略文本长度与辞藻华丽度、引用逐字片段+置信度）
- schema CharacterizationReview{issues[...]}（全字段默认值守解析韧性）+ 注册 catalog
- 计数三处 22→23 + regen prompt_hashes.json（仅加一条）
- DB chapter_reviews 加 characterization JSONB nullable 列（迁移 f6a7b8c9d0e1）
- 接线：graph REVIEW_SPECS 追加 · chain ReviewRecordRepo · collect(extract/record) ·
  review_repo(Protocol/Sql/_to_view/ReviewView) · sse(event/factory/section) · normalize 自动纳入
- 契约 ReviewHistoryItem 加 characterization（gen:api 已重生成）
- 前端 sse/history/useReviewStream + CharacterizationPanel（只展示无裁决 UI、置信度降序+低置信折叠）+ ReviewReport 挂面板
- 测试 test_characterization_does_not_block_accept + 计数/golden + collect/normalize + 前端 reducer/normalize/parse

守不变量 #2/#3/#9；依赖 ⑧（motive/appearance 作客观锚点）。

packages/db/migrations/versions/f6a7b8c9d0e1_chapter_reviews_characterization.py

@@ -0,0 +1,33 @@
+"""Add characterization JSONB column to chapter_reviews (灵感③ advisory 人物塑造审).
+
+单列 JSONB nullable（advisory 留痕，独立于恒 None 的 health_score）；nullable 免 backfill
+（旧留痕行留 NULL，collect/前端优雅降级）。仅建议、不进 conflicts、不碰验收 gate（灵感 D2）。
+
+Revision ID: f6a7b8c9d0e1
+Revises: e5f6a7b8c9d0
+Create Date: 2026-07-06 00:00:00.000000
+"""
+
+from __future__ import annotations
+
+from collections.abc import Sequence
+
+import sqlalchemy as sa
+from alembic import op
+from sqlalchemy.dialects import postgresql
+
+revision: str = "f6a7b8c9d0e1"
+down_revision: str | None = "e5f6a7b8c9d0"
+branch_labels: str | Sequence[str] | None = None
+depends_on: str | Sequence[str] | None = None
+
+
+def upgrade() -> None:
+    op.add_column(
+        "chapter_reviews",
+        sa.Column("characterization", postgresql.JSONB(astext_type=sa.Text()), nullable=True),
+    )
+
+
+def downgrade() -> None:
+    op.drop_column("chapter_reviews", "characterization")

packages/db/ww_db/models.py

@@ -225,6 +225,8 @@ class ChapterReview(UuidPk, CreatedAt, Base):
     foreshadow_sug: Mapped[list[Any]] = mapped_column(JSONB, server_default=text("'[]'"))
     style: Mapped[dict[str, Any] | None] = mapped_column(JSONB)
     pace: Mapped[dict[str, Any] | None] = mapped_column(JSONB)
+    # 灵感③ advisory 人物塑造审留痕（JSONB nullable，独立列不复用恒 None 的 health_score）。
+    characterization: Mapped[dict[str, Any] | None] = mapped_column(JSONB)
     health_score: Mapped[int | None] = mapped_column(Integer)
     decisions: Mapped[dict[str, Any] | None] = mapped_column(JSONB)