…tests

- Check SOLUTIONS registry in ChallengeDetail loader so the walkthrough
  link only appears when a solution file has been authored, not just
  when the deadline has passed
- Add .catch() to clipboard writeText in SolutionDetail to surface
  failures instead of silently swallowing them
- Tighten prerender assertion from "Solution" to "Solution:" so the
  check only passes when a real authored solution title is rendered,
  not a fallback "Not Found" or locked state
- Update generate-solutions.mjs template to emit the same stricter
  assertion for future solutions

Signed-off-by: Sinduri Guntupalli <sinduri.guntupalli@dynatrace.com>

- Replace floating language label + absolute copy button with a header bar
  (label right-aligned, copy button in the pre area via md-copy-btn) so
  they never overlap at any viewport width
- Add overflow-wrap: break-word to md-content and md-inline inline code
  to prevent long file paths overflowing on mobile
- Show "What Was Fixed" step nav above the context section on mobile
  (lg:hidden in main column, hidden lg:block in sidebar)
- Fix prerender tests to read the solution HTML once in beforeAll
- Move contributor badge below intro text in SolutionHero
- Aggregate further reading links de-duped into a sidebar card
- Remove collapsible wrapper from context section (always-open)
- Update add-solution.md, ADVENTURES.md, and styleguide.md to reflect
  new contributor, outro, and further reading conventions

Signed-off-by: Sinduri Guntupalli <sinduri.guntupalli@dynatrace.com>

- Move `furtherReading` from `SolutionStep` to top-level `Solution` type;
  remove per-step aggregation/dedup in favour of a single authored list
- Add `loader` to `SolutionDetail`; `meta()` now uses loader data via
  `MetaFunction<typeof loader>`, eliminating duplicate `SOLUTIONS.find` calls
- Replace `<h2>` inside `<summary>` elements with `<span>` to fix unreliable
  AT heading navigation through `<details>/<summary>`
- Fix `BlockRenderer` and `TakeawaysList` index keys (`${type}-${i}` and
  `key={item}` respectively)
- Fix `patchRegion` silent failure: missing region markers now abort with
  an error instead of no-op
- Add `--validate-only` flag to `generate-solutions.mjs` and
  `generate:solutions:validate` npm script
- Fix `beforeAll` missing from vitest import in `prerender.test.ts`; replace
  hardcoded contributor/outro assertions with `SOLUTIONS` data lookups
- Add `src/test/solutionDetail.test.tsx`: page-state tests and `CodeBlock`
  copy-button tests (clipboard call, Copied state, 1500ms revert)

Signed-off-by: Sinduri Guntupalli <sinduri.guntupalli@dynatrace.com>

- Replace em dashes in aria-labels with colon/comma separators (AT reads — as "dash")
- Extract isSolutionUnlocked() to utils.ts; use in both ChallengeDetail and SolutionDetail loaders
- Rename loader field available → solutionUnlocked for clarity
- Add role="list" to solution steps <ol> (Tailwind preflight strips VoiceOver list semantics)
- Promote step titles from <span> to <h3> so heading-key navigation reaches them
- Replace <p> with <h2> for the solution walkthrough promo in ChallengeDetail
- Remove StepFooter passthrough; move null-guard into TakeawaysList
- Guard SolutionHero backstory div so empty role="note" is never rendered
- Fix topic pill and copy button touch targets to meet WCAG 2.5.8 (24px minimum)
- Use ReturnType<typeof loader> for useLoaderData generic in ChallengeDetail
- Fix ArrowRight icon size from 13 to 14
- Update all test fixtures to use solutionUnlocked and include deadline field

Signed-off-by: Sinduri Guntupalli <sinduri.guntupalli@dynatrace.com>

…t-in-orbit

- Add intermediate solution (The Silent Canary): three bugs in the
  AnalysisTemplate fixed step by step — wrong Prometheus service name,
  inverted success condition, and missing ready-containers query
- Add expert solution (Hyperspace Operations & Transport): OpenTelemetry
  Collector configuration walkthrough and three-metric canary analysis
- Add 12 WebP images for both levels
- Fix beginner solution: split kubectl commands with intermediate
  explanation, add missing apply command after auto-sync fix, restore
  self-healing outcome sentence, correct two-apps alt text
- Update add-solution command: remove two-takeaway cap, preserve all
  source takeaways; add note to not drop explanatory prose
- Generator patches: sitemap, llms.txt, smoke tests, prerender tests,
  SEO tests, react-router config, solutions index

Signed-off-by: Sinduri Guntupalli <sinduri.guntupalli@dynatrace.com>

- Guard navigator.clipboard with optional chaining to avoid synchronous TypeError in non-secure contexts
- Add explicit LoaderData return type to loader function
- Fix canonical URL trailing slash to match sitemap (/solution/)
- Lowercase overline label source text (CSS text-transform: uppercase handles display)

Signed-off-by: Sinduri Guntupalli <sinduri.guntupalli@dynatrace.com>