docs: separate design reference queue

- 将不直接执行的 process-reference 文档迁入各域 reference 目录

- 更新 design/README、AGENTS 和总序文档，固定 process/draft/reference/done 目录语义

- 修正活跃文档中指向旧 process 位置的参考链接

验证：git diff --check；codegraph sync .

design/01-05-current-priority-overview.md

@@ -71,7 +71,7 @@ P0-P6 已经有最小闭环证据；P7 已完成阶段性瘦身，但还不是
 
 当前状态：
 
-- `/mnt/Data1T/mnote/design/05-editor-mainline/process/5-5-page-aggregate-single-truth-alignment-v1.md`
+- `/mnt/Data1T/mnote/design/05-editor-mainline/reference/5-5-page-aggregate-single-truth-alignment-v1.md`
 - `/mnt/Data1T/mnote/design/05-editor-mainline/process/5-6-page-aggregate-alignment-checklist-v1.md`
 - `/mnt/Data1T/mnote/design/05-editor-mainline/done/5-5-1-page-aggregate-contract-v1.md`
 
@@ -119,7 +119,7 @@ P0-P6 已经有最小闭环证据；P7 已完成阶段性瘦身，但还不是
 - `/mnt/Data1T/mnote/design/03-rust-web/process/3-1-rust-web-long-term-checklist-v2.md`
 - `/mnt/Data1T/mnote/design/04-tree-domain/done/4-sidebar-pagetree-filetree-rust-web-rebuild-v1.md`
 - `/mnt/Data1T/mnote/design/04-tree-domain/done/4-2-sidebar-pagetree-filetree-product-interaction-contract-v1.md`
-- `/mnt/Data1T/mnote/design/05-editor-mainline/process/5-2-tiptap-notion-like-template-adoption-v1.md`
+- `/mnt/Data1T/mnote/design/05-editor-mainline/reference/5-2-tiptap-notion-like-template-adoption-v1.md`
 - `/mnt/Data1T/mnote/design/05-editor-mainline/done/5-4-leptos-tiptap-mainline-correction-v1.md`
 - `/mnt/Data1T/mnote/design/04-tree-domain/done/4-35-convex-filetree-title-md-source-alignment-v1.md`