refactor(agents): 全量重写 21 个 prompt——任务对齐 + prompt 工程最佳实践

对全部外置 prompt 做激进重写（每条经独立 agent 网络调研 + 重写，再由
另一 agent 交叉验证），让每条更贴合其 agent 任务。纯内容优化，零结构/schema
变更；金标准 fixture 同步重生成。

- 四审（continuity/foreshadow/style/pace）：保持只读，强化判定方法——
  continuity 证据对子 + 假阳性纪律；pace 0-5 爽点锚点；style 0-100 评分锚点
  + 字数 100 短段豁免/无指纹降级；foreshadow 埋设—回收契约
- 生成器：角色框定 + 落笔前自检 + 示例 + 差异化反雷同（character-gen/opening
  黄金三章/blurb/worldbuilder 硬规则/golden-finger/glossary/name/book-title/brainstorm）
- writer：去 AI 腔/机翻腔检查表 + 不改情节/事实约束（refiner 仍纯文本无 JSON、
  continue 无缝承接、expand、de-ai）
- 结构类：outliner 逐章蓝图 / fine-outline 分场节拍 / style_extract 先取证后下判 /
  teardown 粗拆→细拆

护栏全验：output_schema 契约逐字段保留、无具体 model 名、无占位/format 槽、
中文、≤1 尾 LF、无 BOM。语义锚点（差异化/100/硬规则）保留，3 个措辞耦合用例
无需改即过。门禁绿：ruff/format clean · mypy 209 · pytest 744 passed
（金标准 #5 对齐重生成 fixture；内容无关的 #2/#12 仍绿）。

packages/agents/tests/fixtures/prompt_hashes.json

@@ -1,23 +1,23 @@
 {
-  "blurb": "c6f89e3de577775aae1ff747a103876664b3075bdcb2ed118697593891707544",
-  "book-title": "bb6f0c091fdfb4770c3e398a5f44bc97ec2603a923d4624d784f15916820d305",
-  "brainstorm": "cbdc8f88a4eed5c1d34db03b522a77cec5fb3c15a474fd191399d05f58f071b5",
-  "character-gen": "7ef3075c5339174c4a40c92995ec7c71fd058936efbaa468d24c697a7cc9ee0e",
-  "continue": "d140ed43e508531798e24e708d79171f4f9c7a14d92e6523b217d00985507858",
-  "continuity": "043a838cf32bfab047d3ea271114733eb3634f091448406259f6464de46f2897",
-  "de-ai": "c8ef0e34bdd9806786aa0af1ec25b6334f6a31211a51fb025730c66b7a462835",
-  "expand": "c83fcff4c5820c4d0213e1f63609f19a57959d0a3660df1cbda8f752db4e083a",
-  "fine-outline": "f2941ce4c1df036fd14e110767c2118c28b6f7ea7fa50e79568313a56dbb6937",
-  "foreshadow": "df830dd27a51c79789fe4b9f9bc6a6e2228670d198d6b330c7b68063a3817227",
-  "glossary": "6526746766a67ae7b9bd082856410fc4be04a1efd200254bcd1f855cad69c376",
-  "golden-finger": "20b5b2c14474ec460e6f89a6e5aa1332fa73e49594fa8e81f7383caded4302f8",
-  "name": "3e5f631fd518ca77ea9cda7f68afcfcfd9636440dc3633fc496e94d0b40eba05",
-  "opening": "fa777ab5ffc861a4a0da6ceff629573f7388340173706ebe8452041d16a893b5",
-  "outliner": "c1ad0527d291a0a3914340086d3429740a3cc6860927485da64cc597b8622549",
-  "pace": "a4c8011c27904a7e8d1bfa0639e2d5b83f900a14e50ccd0a6f3051ecf6310674",
-  "refiner": "1a31b355938d95e99a4d17a80b3149c2c42e7dd1d40b9939c64f014d7380bbd2",
-  "style": "a527a540accb5902b405ac4b0e3421d63a6da792439a1ed429c711b48188d780",
-  "style_extract": "a8fbfce6f7885a9257e9036aeb2803bb0c623c250a559ab6bb6f1f6407855854",
-  "teardown": "ddde94186beec6c7f3edcfa060d3471fe86c223d24fd01bf9d37d5c80ab8a9cf",
-  "worldbuilder": "2fee12f3f001a24c8c8c97bf308436d979993c7a02a519ef511085622747c61d"
+  "blurb": "2adba04a16707d7d9dfbb84d0a5a302ea8e946104dd8a617ff7801ed86f41605",
+  "book-title": "aa53ccf22da1d4e555c8168fc23f2f3547cc6f59e56e5df57540b7a946755e39",
+  "brainstorm": "f670dc77e3d9bd4a1df2b8cb29b51edb8b229d214148907d4b05519492364ada",
+  "character-gen": "61e443ab15aab8abfd4a785b32b079b304fbd2096e40541452f553c008156330",
+  "continue": "f1ce02be3b186fc966c89cf0d54ea57a400e91d435ea91f5722cb17e43d11763",
+  "continuity": "1bdf9799bad9076e54de2023433ec7da7b559509d986392a0563dc1ee20cf4a1",
+  "de-ai": "9ce3020cdd4b223cc4d13c289babd2811bbfece4b392711dcba4fd0301c87249",
+  "expand": "74a5d71c4ffc11b78bf80c7ab3fc3eebfc1192ffff2b0bfa9957ec2c33d9d05e",
+  "fine-outline": "0ae0b71f4144e82ffa2a7a0059505525857f7d9797e94ced25da3129355a46ed",
+  "foreshadow": "405696461fef445e4609227c40df6c4812737735edea7e1966ee84afe7635645",
+  "glossary": "54e95d21d10b9209287c10517134f485ca5ce4a3ef08291aac954dcf492d73d0",
+  "golden-finger": "416e8591d99ea1296db550bc428012aa937eed47eea03ef435e92c6843005e21",
+  "name": "ee759bc967773e3300813f250f233c872fd3a4f0cb00086509ffc3552d67700b",
+  "opening": "c3b442a26dddbfac0a3c1b01ab5b726b34b656ebd640c19abd25b900a27093b5",
+  "outliner": "3086ba81fe8028687bf079db2c2fb227ba5a162b7fc09210914e6f4ebd9c0d2e",
+  "pace": "c6a023cb93fde4879a0fb93cd28e0227694a4cf867e64e768319ee3135d82746",
+  "refiner": "65a4baa298bedce4592829c02d6a16c15a19ef6fdbb2098278f9decc8ffeb813",
+  "style": "728d9ad2379d7923e1927c9de2b7b512ea8b39faef122a60005215aa069823f1",
+  "style_extract": "998c30ea0d0eab3936e1d6b319e832645eefaa7f7dd4a1c86d5c1ec9467e8b8c",
+  "teardown": "4fb7335c3e79e19ef276f199011a5de888330fc7f91a53dd483a6531b94b973e",
+  "worldbuilder": "3bf578c2df3018e0f969949c760bb8d214639df4aa17aa904d3ce803c6ddcc3e"
 }