dwindown 3a475e9df2 feat: WCAG AA accessibility, code splitting, responsive ads layout ...

- Add React.lazy code splitting for all 15 tool pages
- Fix WCAG AA contrast issues (304 text color fixes)
- Add ARIA labels and aria-expanded to navigation buttons
- Add aria-live for error announcements in tools
- Implement responsive ad layout:
  - Desktop (≥1280px): Right sidebar with 3 ad units
  - Tablet (1024-1279px): Bottom section with 3 horizontal units
  - Mobile (<1024px): Fixed bottom banner
- Add TabletAdSection component for tablet ad placement
- Integrate Onidel affiliate partnership
- Update all Adsterra domains to solutionbiologyisle.com
- Add release notes for 2026-02-18 updates

2026-02-18 18:57:31 +07:00

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