Prune stale docs and update .hermes content

Delete a large set of outdated documentation (many files under docs/ and .hermes/plans/, including audits, design, prd, technical, planning, assets, and todos). Update and consolidate .hermes content: refresh shared-memory pages (decision-log, development-workflow, document-map, pitfalls, project-overview, team-conventions) and several skills/references under .hermes/skills. Also modify AGENTS.md, README.md, UI_CODING_STANDARD.md, docs/README.md and .encoding-check-ignore. Purpose: clean up stale planning/audit material and keep current hermes documentation and related top-level docs in sync.

server-rs/crates/platform-llm/README.md

@@ -37,10 +37,15 @@
 
 ## 4. 设计文档
 
-详细约束与接口说明见：
+## 当前文档入口
 
-- [../../../docs/technical/PLATFORM_LLM_TEXT_GATEWAY_DESIGN_2026-04-21.md](../../../docs/technical/PLATFORM_LLM_TEXT_GATEWAY_DESIGN_2026-04-21.md)
+当前长期工程口径已融合到：
 
+1. [../../../docs/【后端架构】server-rs与SpacetimeDB数据契约-2026-05-15.md](../../../docs/【后端架构】server-rs与SpacetimeDB数据契约-2026-05-15.md)
+2. [../../../docs/【玩法创作】平台入口与玩法链路-2026-05-15.md](../../../docs/【玩法创作】平台入口与玩法链路-2026-05-15.md)
+3. [../../../docs/【开发运维】本地开发验证与生产运维-2026-05-15.md](../../../docs/【开发运维】本地开发验证与生产运维-2026-05-15.md)
+
+旧阶段设计文档不再作为实现依据。
 ## 5. 边界约束
 
 1. `platform-llm` 只承接模型平台适配，不承接业务模块状态真相与业务规则。