docs: publish architecture map in docs site

[zakoverflow]

Summary\n\n- Add a prominent Architecture section to the docs home page with links to the architecture overview, interactive map, and structured JSON artifact.\n- Add a Sphinx Architecture page linking to the interactive architecture map and structured JSON artifact.\n- Copy docs/architecture/architecture.html and docs/architecture/architecture.json into the generated docs site under architecture/ so GitHub Pages can serve them.\n- Document the Sphinx publishing entrypoint in the architecture docs README.\n\n## Verification\n\n- node docs/architecture/embed-architecture-json.mjs && git diff --exit-code docs/architecture/architecture.html\n- /home/ubuntu/.openclaw/workspace/scripts/check-resources.sh --label "note-c docs build" --min-ram-gb 4\n- Clean Docker docs build using ghcr.io/blues/note_c_ci:latest with a temporary CMake build directory.\n- Verified generated files exist:\n - docs/index.html with architecture links\n - docs/architecture.html\n - docs/architecture/architecture.html\n - docs/architecture/architecture.json\n- git diff --check\n

[Copilot]

Pull request overview

Publishes the repository’s architecture artifacts (overview page, interactive HTML map, and JSON) into the generated Sphinx docs output so they can be served from the documentation site (e.g., GitHub Pages).

Changes:

• Adds an Architecture section to the docs landing page and links it into the Sphinx toctree.
• Introduces a new architecture.rst page that links to the interactive map and JSON artifact.
• Updates the docs CMake build to copy docs/architecture/architecture.html and docs/architecture/architecture.json into the built site under architecture/.

Reviewed changes

Copilot reviewed 4 out of 4 changed files in this pull request and generated 2 comments.

File	Description
docs/index.rst	Adds Architecture section and links the new architecture page in the toctree.
docs/CMakeLists.txt	Copies architecture HTML/JSON artifacts into the Sphinx build output directory.
docs/architecture/README.md	Documents the Sphinx entrypoint (docs/architecture.rst) for published architecture docs.
docs/architecture.rst	New Sphinx page linking to the interactive map + JSON artifact and pointing to ARCHITECTURE.md.

[Copilot]

Pull request overview

Copilot reviewed 4 out of 4 changed files in this pull request and generated 1 comment.

[Copilot]

Pull request overview

Copilot reviewed 4 out of 4 changed files in this pull request and generated 1 comment.

[Copilot]

Pull request overview

Copilot reviewed 4 out of 4 changed files in this pull request and generated no new comments.