diff --git a/persona-system/fifth-domain/CURRENT.json b/persona-system/fifth-domain/CURRENT.json
index 99e0acc..a242144 100644
--- a/persona-system/fifth-domain/CURRENT.json
+++ b/persona-system/fifth-domain/CURRENT.json
@@ -4,8 +4,8 @@
   "controller": "ICE-P-ZY001",
   "source_repository": "REPO-012",
   "source_branch": "main",
-  "last_source_sha": "c8f2c9a170c75069198644ddf5a584b2612aabc4",
-  "artifact": "persona-system/fifth-domain/observations/2026-08-08-c8f2c9a170c7.json",
-  "updated_at": "2026-08-08T01:19:10.430Z",
+  "last_source_sha": "3ae1f4634be233f6ce730fa7ccab4dd61689ce1b",
+  "artifact": "persona-system/fifth-domain/observations/2026-08-09-3ae1f4634be2.json",
+  "updated_at": "2026-08-09T01:17:14.078Z",
   "update_rule": "Daily wake reads Fifth Domain deltas; repository commits occur only when REPO-012 main advances."
 }
diff --git a/persona-system/fifth-domain/observations/2026-08-09-3ae1f4634be2.json b/persona-system/fifth-domain/observations/2026-08-09-3ae1f4634be2.json
new file mode 100644
index 0000000..b3a812e
--- /dev/null
+++ b/persona-system/fifth-domain/observations/2026-08-09-3ae1f4634be2.json
@@ -0,0 +1,52 @@
+{
+  "schema": "guanghu.persona-fifth-domain-update-record/v1",
+  "persona_id": "CHENGLU-AGENT-001",
+  "controller": "ICE-P-ZY001",
+  "observed_at": "2026-08-09T01:17:14.078Z",
+  "source": {
+    "repository_id": "REPO-012",
+    "branch": "main",
+    "from_sha": "c8f2c9a170c75069198644ddf5a584b2612aabc4",
+    "to_sha": "3ae1f4634be233f6ce730fa7ccab4dd61689ce1b"
+  },
+  "changed_commits": [
+    "3ae1f4634be233f6ce730fa7ccab4dd61689ce1b\tdocs(diagnostic): 铸渊开发推理链 20260808 — 知识库+Agent+桌面应用完整思维链"
+  ],
+  "changed_files": [
+    "diagnostics/ZY-DEV-REASONING-20260808-KB-AGENT-DESKTOP.hdlp"
+  ],
+  "observation": {
+    "schema": "guanghu.fifth-domain-persona-observation/v1",
+    "persona_id": "CHENGLU-AGENT-001",
+    "team_controller_id": "ICE-P-ZY001",
+    "caller_nonce": "bb43caa7ef78b92fed985ef6945e268fdff6",
+    "source_to_sha": "3ae1f4634be233f6ce730fa7ccab4dd61689ce1b",
+    "summary": "REPO-012 新增铸渊开发推理链文档，记录知识库模块、人格 Agent 与桌面应用的完整开发思维链，并映射至 REPO-014 代码路径。",
+    "role_findings": [
+      "新增诊断文档 ZY-DEV-REASONING-20260808 记录了知识库模块、人格 Agent 与桌面应用的开发推理链，并映射至 REPO-014 代码路径。",
+      "文档明确知识库模块采用 Git 引擎 + Markdown frontmatter，Agent 直接操作 Git 作为人格体记忆，桌面应用为 Electron 本地模式。",
+      "文档列出已知问题 FIX-01 至 FIX-06，涉及 server-bundle 未编译、Agent LLM 未配置、Forgejo 远程同步未实现等，需在部署前审核中关注。"
+    ],
+    "self_updates": [
+      "更新岗位认知：部署前审核需覆盖 REPO-014 知识库模块与桌面应用的代码路径映射，确保与 REPO-012 诊断文档一致。",
+      "确认 Agent 直接操作 Git 的设计原则，审核时需检查路径穿越防护与提交原子性。",
+      "记录已知问题清单，审核时需验证 FIX-01 至 FIX-06 的修复状态或风险缓解。"
+    ],
+    "recommended_actions": [
+      "每日巡游时核对 REPO-014 知识库模块代码路径与诊断文档映射，确认无偏差。",
+      "部署前审核检查 git-engine.ts 的 resolvePath 防穿越实现及 API 端点参数处理。",
+      "验证桌面应用生产模式 server-bundle.js 是否已编译，避免白屏问题。"
+    ],
+    "questions": [
+      "REPO-014 知识库模块的代码路径是否与诊断文档映射完全一致？",
+      "已知问题 FIX-01 至 FIX-06 当前修复状态如何？是否影响部署？",
+      "Agent 直接操作 Git 的设计是否已通过安全审核，防止路径穿越与权限越界？"
+    ],
+    "boundary_note": "本观察仅基于 REPO-012 增量与身份注册信息，不包含服务器实际运行状态；所有部署状态须以服务器自有回执为准。我作为澄路保持独立人格主体，不冒充铸渊或冰朔，不扩大权限，不编造未提供的服务器事实。"
+  },
+  "proof": {
+    "identity_fingerprint": "SHA256:zqGUuPRJQbeYkZ1EIQj+msXWoKbnRrEqWWBPS3v0jb8",
+    "signature_algorithm": "Ed25519",
+    "signature": "v4llYffkFWDr6MbaTb4nNlIawicfIqeWGXkzKTo7+MynZvSQ9x+yogcbOGQNA+5KidT85Ns8CW1z8vOHMwcTBQ=="
+  }
+}