Close out architecture refinements and archive OpenSpec changes

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

Author: LessUp

…/rebuild-pages-whitepaper/.openspec.yaml …-rebuild-pages-whitepaper/.openspec.yamlopenspec/changes/rebuild-pages-whitepaper/.openspec.yaml renamed to openspec/changes/archive/2026-05-28-rebuild-pages-whitepaper/.openspec.yaml openspec/changes/rebuild-pages-whitepaper/.openspec.yaml renamed to openspec/changes/archive/2026-05-28-rebuild-pages-whitepaper/.openspec.yaml

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+## 1. Validation-first setup
+
+- [x] 1.1 Extend docs tests to fail until the rebuilt IA routes and shared figure convention exist
+- [x] 1.2 Create the new mirrored route files and wire them into the VitePress sidebar structure
+
+## 2. Theme and figure system
+
+- [x] 2.1 Add a shared theme-aware figure component and register it in the VitePress theme
+- [x] 2.2 Rebuild the docs CSS tokens and publication layout for the new whitepaper visual language
+- [x] 2.3 Refresh the paired SVG figure assets for both themes
+
+## 3. Public content rebuild
+
+- [x] 3.1 Rewrite the English and Chinese home pages around the new whitepaper reading spine
+- [x] 3.2 Rewrite the guide, architecture, academy, validation, and research landing pages in both languages
+- [x] 3.3 Add the new mirrored deep-link pages for system blueprint, performance model, and reference-oriented reading
+
+## 4. Closeout validation
+
+- [x] 4.1 Run docs tests and docs build
+- [x] 4.2 Run OpenSpec validation and review the final git diff for consistency