Independent expert building machine-checkable, verifier-side primitives — validation that fails visibly instead of passing silently.

Why follow: everything here is falsifiable by construction — every claim ships with a runnable reproduction and a negative control, so you can prove me wrong before you trust me. If you care about verifier-side failure semantics, agent governance, or how evidence survives context handoffs, this is the workshop.

Work submitted to ITU-T FG-TIDA (Trustworthy Identification for Autonomous Agents), written in an independent-expert capacity:

• silent-failure-catalog → submitted as a verifier-side challenge reference in FG-TIDA/use-cases PR #23: 15 named silent-failure patterns on the catalog's main branch (the v0.1.3 release carries 14) — validation that passes while nothing is checked — each with a runnable reproduction, a fix, and a negative control. Zenodo-archived (concept record 23051637, resolves to the latest version); canonical release tag per the repo's citation note.
• Theme #7 — verifier-side requirements and failure semantics: discussion contributions on what a relying party may verify offline, and how verdicts stay re-verifiable without making every party a verifier. The catalog is also referenced in theme #6 (intent-based security policies).
• FG-TIDA/wg1-ra-aai PR #2 — reference-architecture chapter 4: offline re-verifiability of agent attestation results, aligned with RFC 9334 (RATS) role separation.
• Merged: FG-TIDA/use-cases PR #18 — completing the submissions index.

One umbrella, used consistently: LGD — Lifecycle Governance Doctrine — LGD (theory), UIBC (executable protocol), MedXpert (medical-device compliance applications — parallel to, not inside, the umbrella); XLGD remains the X-distinction mark for LGD.

名称状态 (name status) : "SynomosAI" / "MedXpert" — 未申请实体注册、未申请商标注册 (not a registered legal entity; no trademark registered)

graph LR
  A[silent-failure-catalog<br/>verifier-side challenge ref] -->|negative controls| B[FG-TIDA #6 / #7<br/>verifier-side failure semantics]
  C[uibc-core<br/>evidence + registry] --> D[LGD lifecycle model]
  A -->|C7 checks-in-path| E[AVS 0.3 candidates]

• 🔍 New to the idea? Start with silent-failure-catalog — read one mode, run its repro, kill it with the fix.
• 🛠 Building agent systems? uibc-core gives you registry / evidence / gates you can wire into your own lifecycle (Apache-2.0).
• 🏛 Tracking FG-TIDA? Watch this account — FG-TIDA submissions and follow-ups land here first.
• 🌐 Prefer plain language? medxpert.cn — the medical-device compliance line, in prose.

Work here is run with a registry, receipts and a permission matrix — registered, evidenced, gated.

• ⭐ Star or 👀 watch a repo if a mode / primitive saves you a bug — it tells me what to deepen next.
• 🐛 Found a claim that doesn't reproduce? That is the best issue to open. Negative controls are the house style.
• 💬 Ask me about verifier-side validation, agent evidence, or medical-device compliance tooling.
• ➕ Follow for standards-track work (ITU-T FG-TIDA), new silent-failure modes, and machine-checkable governance primitives.

• Email: zhaoxinghua09@gmail.com
• ORCID: 0009-0001-0512-1237
• Site: https://zhaoxinghua09-cell.github.io/lgd-hub/
• LinkedIn: https://www.linkedin.com/in/steven-zhao-9156a197
• X (Twitter): @zhaoxing4100

© 2026 赵兴华 / Steven Zhao (ORCID 0009-0001-0512-1237). All rights reserved. 理论署名 (attribution) : LGD（Lifecycle Governance Doctrine / 全程治理论）— SynomosAI initiative 名称状态 (name status) : "SynomosAI" / "MedXpert" — 未申请实体注册、未申请商标注册 (not a registered legal entity; no trademark registered) 生产参考部署 (production reference, self-reported) : MedXpert ← 非认证、非背书、非监管认可（not a certification or endorsement） 贡献者 (contributors) : LGD 理论组（ResearchGroup）— 理论起草与评审集体署名

All account text, methodology, theory terms, specifications and examples are All Rights Reserved. Code is released under the license stated in each repository (MIT / Apache-2.0 / AGPL-3.0). AI assistance: drafted with AI assistance from sources I read myself; the reading and the position are mine.

Maintained by the rights holder. Public information only; not legal, regulatory, or registration advice.

本账号聚焦于可机器核验的验证方构件——让校验在失效时可见，而不是静默通过。核心理念：每一句声称都自带可运行复现与反向对照，先证伪、后采信。

以独立专家身份向 ITU-T FG-TIDA（可自治智能体可信识别焦点组） 提交的工作：

• silent-failure-catalog —— main 分支上 15 种"静默失败"命名模式的目录（v0.1.3 发布版收录 14 种），每条含可运行复现、修法、反向对照。已作为验证方挑战参考实现提交（FG-TIDA/use-cases PR #23）；Zenodo 归档（概念记录 23051637，解析到最新版本），规范引用 tag 以仓内引用注记为准。
• 主题 #7 验证方失败语义 的讨论贡献（依赖方可离线核验什么、判决如何保持可复验而不把每个人都变成验证者）；catalog 亦被 主题 #6（意图安全策略）引用；wg1-ra-aai PR #2 参考架构第 4 章：离线可复验性（对齐 RFC 9334 角色分离）。
• 已合并：use-cases PR #18（补全投稿索引）。

理论层（lgd-theory · xlgd · xcgs-manifesto）→ 协议层（uibc-core · uibc-competition · silent-failure-catalog · assayance）→ 应用层（agent-skills · agent-memory-service · lgd-hub）。MedXpert 医疗器械产品线为并行线，不在伞内。

本账号的工作按有籍 · 有证 · 有门禁运行：有注册表、有回执、有权限矩阵。

• 觉得某个模式帮你避了坑 → 给仓点 ⭐/👀，这决定我深挖哪条线。
• 发现哪句声称复现不了 → 开 issue，这是本仓最欢迎的贡献（反向对照是本仓家风）。
• ➕ 关注本账号：ITU-T FG-TIDA 标准线动态、新增静默失败模式、可机器核验的治理构件都会先落在这里。

• 邮箱：zhaoxinghua09@gmail.com ｜ ORCID：0009-0001-0512-1237 ｜ 官网：https://zhaoxinghua09-cell.github.io/lgd-hub/
• LinkedIn：https://www.linkedin.com/in/steven-zhao-9156a197 ｜ X：@zhaoxing4100

© 2026 赵兴华 / Steven Zhao (ORCID 0009-0001-0512-1237). All rights reserved. 理论署名 (attribution) : LGD（Lifecycle Governance Doctrine / 全程治理论）— SynomosAI initiative 名称状态 (name status) : "SynomosAI" / "MedXpert" — 未申请实体注册、未申请商标注册 贡献者 (contributors) : LGD 理论组（ResearchGroup）— 理论起草与评审集体署名

本账号文本、方法论、理论术语、规范与示例保留所有权利；代码依各仓许可证（MIT / Apache-2.0 / AGPL-3.0）使用。AI 辅助声明：理论阅读与立场由本人负责。