Create Architecture overview diagram

[rdhyee]

Wireframe spec

Hana's annotation on the Wireframe canvas:

"Information Architecture: Make diagram for overview section?"

The Architecture & Vocabularies overview page currently has text-only Core Principles. The wireframe suggests a visual diagram showing the system architecture.

Current state

• design/index.qmd has 6 bullet-point Core Principles + iSamples Contributions text
• The About page has assets/iSamplesArchitecture.png (system architecture diagram) embedded in the Team section
• No diagram on the Architecture overview page itself

Proposed approach

Either:

1. Move/copy the existing iSamplesArchitecture.png to the Architecture overview page (it's currently buried in the About page Team section)
2. Create a new diagram showing the data flow: Sources → PQG pipeline → Parquet files → DuckDB-WASM → Browser
3. Ask Hana to design one in Figma that matches the site style

Option 1 is immediate. Option 2 tells the modern story. Option 3 gets the best visual result.

Needs: Hana collaboration or team decision on which diagram to create.

Analysis from Figma API wireframe annotation [7:738].