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评审 E 批 P0 三连：rigid O(n²) 单遍刷写 + 双端 golden fixture + B8 验收门禁 - #109
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- 步骤 4 原每实体一次 for_each2_mut 全列扫（n 体 = n 次全列遍历，1k 体即卡帧） → writeback 暂存表（clear() 复用分配，EntKey→钳制后 xyz）+ 单次列遍历查表刷写 - 每实体写回只依赖自身 body 状态，批量刷写保持写序语义 - 新增 thousand_bodies_all_receive_their_writeback：1k 体线性运动无接触精确 断言（dx=vx·dt，漏写即红）；two_runs_are_bit_identical 红线不动 - 裁定：全岛休眠跳步不做——rapier islands 自带 sleep，跳步引入语义风险 大于收益；时间断言 bench 归 #103 bench 四件套（避免 CI 时间 flaky）
- contracts/golden/intents.json：parse 词汇 28 用例（中英+否定+落空）， Rust parse() 与 kernel parseIntent() 双端共读镜像断言 - contracts/golden/presets.json：预设 14 行全字段（caps 五字段恒显式/ price 四字段或 null），Rust preset_json 规范化对照 + kernel norm 对照 - 测试挂 dev-dependencies serde_json（不受 feature 门控，任何 CI 腿都跑） - 改任一侧解析/预设而不更新 fixture → 双端 CI 同红——漂移从此有闸门 - 现状两侧表一致性同时得到实证（此前仅注释纪律维持）
评审发现（两位独立评审 PASS-with-findings，红线零违反）： - [P1] 全角数字双端漂移实锤（JS v2.1 已归一、Rust 无）→ Rust parse 补 全角归一（对镜 kernel），fixture 新增放５个/生成１０个钉住 - [P1] 覆盖缺口必补：清屏（clear 第三同义词）、清空，但别关灯（否定后置 不抑制，比较方向翻转 fixture 必红） - [P2] b8_gate leg4 断言强化：health_report 必须记到失败计数（name-only 检查防不住 record() no-op 回归） - [P2] 1k 测试网格原点 5→9：原 origin-5 对墙嵌入 3 单位（r=8），断言成立 依赖 rapier 软接触；现体-体/体-墙全程无接触，前提为真 - [P2] kernel.test.mjs 行数断言改读 presets.json rows.length（演进少一处） - [P2] JS kind 推导裁定保留（读 fixture 会成同义反复），注释化说明 rebase 到 origin/main（上游 4 提交）后 golden 门禁当场抓到新漂移： - kernel 侧先行加了 xlite 行（15）而 Rust 表仍 14 → Rust 补 xlite 行 + presets.json 第 15 行，双端重新对齐 - price_for_label kind:model 撞行（xlite/openai 同为 gpt-4o-mini）→ 改为 首个有登记价的行胜出（网关未登记价按源厂牌价记账，绝不猜价） - 顺手 cargo fmt：上游 2f93226 带入的 http.rs 三处格式残留（CI 首红主因）
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十角色评审（growth/PLAN-review10-optimization.md）产出的引擎侧三条 P0（#100/#98/#99），全量回归六腿绿。
#100 rigid 写回 O(n²)→O(n)
for_each2_mut全列扫 → writeback 暂存表（clear() 复用分配）+ 单遍查表刷写#98 双端契约单一来源
contracts/golden/intents.json（parse 28 用例）+contracts/golden/presets.json（预设 14 行全字段）#99 B8 验收门禁
b8_gate_smoke：rule 参照后端四腿聚合冒烟（确定性/usage 计量/流式诚实/降级链），进 CI workspace 腿稳定性验证
fmt ✓ / clippy --all-targets 零警告 ✓ / workspace 234 ✓ / genai 53 ✓ / agent json 59 ✓ / infer native-http 92 ✓ / rigid 15 ✓ / kernel 27 ✓ / studio_e2e 三赛道 PASS（孪生指纹 b6945a34162dcb45 与基线一致=零回归）
Closes #98, closes #99, closes #100