renato97 45582e5f59 feat: interactive linear algebra practice web app ...

- 68 exercises from UBA FCE chapters 1-3
- Step-by-step solutions with KaTeX rendering
- Theory panels (26 topics) expandable per exercise
- Matrix builder (2x2/3x3/4x4) with 7 operations
- System solver (Gauss, Gauss-Jordan, Cramer, Rouché-Frobenius)
- Glassmorphism UI with dark mode
- Canvas particle background
- ARIA accessibility (keyboard nav, screen reader)
- Zero build step - open index.html directly

2026-05-20 01:26:40 -03:00

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