docs(chain-fusion): review Learn Hub images not migrated in PR #213

[marc0olo]

Background

PR #213 migrated the chain fusion concept pages from the Learn Hub into docs/concepts/chain-fusion/. The text content was migrated but the images were not reviewed or carried over.

The following Learn Hub articles contain images that may (or may not) belong in our docs. Each image needs individual review before adding — not all are necessarily needed, and some architectural diagrams might be better replaced with PlantUML source-controlled diagrams instead of raster screenshots.

Images to review

Article	Learn Hub ID	Images
Bitcoin Integration	34211154520084	2 images (41161561347348, 43174436435476)
Chain-key Bitcoin	44598021228564	2 images (44598021222548, 44598026440340)
Bitcoin Checker Canister	45033984570516	1 image (45033948399764)
Ethereum Integration	34575019947668	1 image (34575033443348)
EVM RPC Canister	45550731488916	1 image (45550731486996)
SOL RPC Canister	46782465439764	1 image (46782497345940)
Dogecoin Integration	46782835018516	1 image (46782851378068)
Exchange Rate Canister	45038506066452	1 image (45038716591124)

Images follow the URL pattern: https://learn.internetcomputer.org/hc/article_attachments/<id>

Chain Fusion overview and Chain-Key Tokens articles have no images.

Review checklist per image

For each image, decide:

• Does the image add meaningful information not already covered by the text?
• Is it an architecture/flow diagram? If yes, consider replacing it with a PlantUML diagram (source-controlled, theme-consistent, maintainable) rather than copying a raster screenshot.
• Is it a screenshot of a UI or tool? Evaluate whether it will go stale quickly.
• If keeping: download and place in public/concepts/chain-fusion/, add with descriptive alt text.

Related

• PR docs: Chain Fusion deep dives #213 (chain fusion migration)
• PR docs: add protocol stack concept pages (Batch 1) #209 precedent: protocol stack images were reviewed individually and placed at semantically correct positions in the page, with original alt text preserved

[marc0olo]

closed with #229