feat: add markdown content pipeline with build script

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

content/docs/en/getting-started.md

@@ -0,0 +1,43 @@
+---
+title: Getting Started
+description: Learn how to use TexPixel for formula recognition
+slug: getting-started
+date: 2026-03-25
+tags: [tutorial, beginner]
+order: 1
+---
+
+# Getting Started with TexPixel
+
+TexPixel is an AI-powered math formula recognition tool that converts handwritten or printed formulas into LaTeX, MathML, and Markdown.
+
+## Quick Start
+
+1. **Upload** — Drag and drop an image or PDF containing math formulas
+2. **Wait** — Our AI will process and recognize the formulas
+3. **Export** — Copy the result or export in your preferred format
+
+## Supported Formats
+
+### Input
+- Images: JPG, PNG
+- Documents: PDF
+
+### Output
+- LaTeX
+- MathML
+- Markdown
+- Word (DOCX)
+- Image
+
+## Example
+
+Upload an image containing the quadratic formula, and TexPixel will output:
+
+$$x = \frac{-b \pm \sqrt{b^2 - 4ac}}{2a}$$
+
+## Tips
+
+- For best results, ensure your formula images are clear and well-lit
+- Handwritten formulas work best when written with dark ink on white paper
+- PDF files can contain multiple pages — all formulas will be extracted