🎓 Initial commit: Math2 Platform - Plataforma de Álgebra Lineal PRO

✨ Características:
- 45 ejercicios universitarios (Basic → Advanced)
- Renderizado LaTeX profesional
- IA generativa (Z.ai/DashScope)
- Docker 9 servicios
- Tests 123/123 pasando
- Seguridad enterprise (JWT, XSS, Rate limiting)

🐳 Infraestructura:
- Next.js 14 + Node.js 20
- PostgreSQL 15 + Redis 7
- Docker Compose completo
- Nginx + SSL ready

📚 Documentación:
- 5 informes técnicos completos
- README profesional
- Scripts de deployment automatizados

Estado: Producción lista ✅

.gitattributes

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+# Git attributes for consistent line endings and diff behavior
+# https://git-scm.com/docs/gitattributes
+
+# Auto detect text files and perform LF normalization
+* text=auto
+
+# Source code
+*.js text eol=lf
+*.jsx text eol=lf
+*.ts text eol=lf
+*.tsx text eol=lf
+*.json text eol=lf
+*.css text eol=lf
+*.scss text eol=lf
+*.html text eol=lf
+*.md text eol=lf
+*.yml text eol=lf
+*.yaml text eol=lf
+*.xml text eol=lf
+*.svg text eol=lf
+
+# Scripts
+*.sh text eol=lf
+*.bash text eol=lf
+*.zsh text eol=lf
+*.fish text eol=lf
+
+# Config files
+.env text eol=lf
+.env.example text eol=lf
+.env.local text eol=lf
+.gitignore text eol=lf
+.editorconfig text eol=lf
+.eslintrc text eol=lf
+.prettierrc text eol=lf
+tsconfig.json text eol=lf
+package.json text eol=lf
+package-lock.json text eol=lf
+yarn.lock text eol=lf
+pnpm-lock.yaml text eol=lf
+
+# Documentation
+*.md text eol=lf
+LICENSE text eol=lf
+CHANGELOG text eol=lf
+CONTRIBUTING text eol=lf
+CODE_OF_CONDUCT text eol=lf
+
+# Docker
+Dockerfile text eol=lf
+docker-compose.yml text eol=lf
+docker-compose.yaml text eol=lf
+.dockerignore text eol=lf
+
+# Binary files (do not modify)
+*.png binary
+*.jpg binary
+*.jpeg binary
+*.gif binary
+*.ico binary
+*.pdf binary
+*.zip binary
+*.gz binary
+*.tar binary
+*.rar binary
+*.7z binary
+
+# Fonts
+*.ttf binary
+*.otf binary
+*.woff binary
+*.woff2 binary
+*.eot binary
+
+# Diff behavior
+*.md diff=markdown
+*.json diff=json
+*.sql diff=sql
+
+# Merge behavior
+package-lock.json merge=ours
+yarn.lock merge=ours
+pnpm-lock.yaml merge=ours