wuzilong/ajyy: 安建医院小程序 @ main

wuzilong 362ef18153 docs: clarify public upload threat model and non-exec hardening		пре 2 месеци
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2026-09-06-ajyy-feedback-platform-design.md	d026328dd7 docs: add ajyy feedback platform design spec	пре 2 месеци
2026-09-09-attachment-access-control-design.md	362ef18153 docs: clarify public upload threat model and non-exec hardening	пре 2 месеци