feat(adventure): add levels to Dead Reckoning — expert

[offon-data-refresh]

update: Dead Reckoning

Auto-synced from the challenges repo.

Source: https://github.com/off-on-dev/open-source-challenges/tree/main/adventures/dead-reckoning

Levels in this PR: expert

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Before merging

• Review topics: on each level, auto-set to all adventure tags, refine to level-specific subset if needed
• Update discussion_url: in each level once the Discourse threads are created
• Update discussionUrl in each *-posts.json stub

Manual steps (only if needed)

• If a level's architecture_diagram SVG was not auto-fetched (check the sync logs for a warning), add the SVG manually to src/assets/diagrams/ and add architecture_diagram: <file>.svg to that level in adventure.yaml, then run npm run generate
• If a level has an architecture_diagram but no diagram_alt, add diagram_alt: to that level in adventure.yaml with a one-sentence description of the diagram, then run npm run generate
• Run node scripts/refresh-discussions.mjs after discussionUrl values are set

Auto-generated (do not edit by hand)

The following are kept in sync with adventure.yaml by npm run generate (prebuild hook):

• public/sitemap.xml (GENERATED:adventures region)
• react-router.config.ts prerender (GENERATED:adventures region)
• e2e/smoke.spec.ts and src/test/seo.test.ts route arrays
• src/test/prerender.test.ts pages array
• scripts/refresh-leaderboard.mjs ADVENTURE_CATEGORIES

Checks

npm run lint && npm test && npm run build && npm run test:e2e

[github-actions]

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2026-07-21 09:11 UTC