refactor(en): restructure en/documents to match zh structure

- Reorganize from 7 flat directories to 5 aggregated directories
- 00-fundamentals: core concepts, glue coding, methodology
- 01-getting-started: environment setup guides
- 02-methodology: tools, tutorials, development guides
- 03-practice: project examples (polymarket, telegram, fate-engine, etc.)
- 04-resources: templates, tools, external resources
- Remove duplicate files with underscore naming
- Add README.md for 00-fundamentals and 02-methodology

i18n/en/documents/03-practice/polymarket-dev/README.md

@@ -0,0 +1,25 @@
+# 📊 polymarket-dev
+
+> Polymarket Data Analysis and Visualization Practical Experience
+
+## Project Background
+
+Collection, analysis, and visualization of Polymarket prediction market data, including K-line chart ASCII rendering, glue code development, etc.
+
+## Document List
+
+| File | Description |
+|:---|:---|
+| [ascii-visualization-prompt.md](./ascii-visualization-prompt.md) | Prompt for drawing K-line charts with ASCII characters |
+| [prompt-system-bazi-kline.md](./prompt-system-bazi-kline.md) | System prompt: K-line analysis |
+| [prompt-user-bazi-kline.md](./prompt-user-bazi-kline.md) | User prompt: K-line analysis |
+| [glue-development-requirements-prompt.md](./glue-development-requirements-prompt.md) | Glue code development specification prompt |
+| [integrity-check-prompt.md](./integrity-check-prompt.md) | Code integrity check prompt |
+| [review-prompt.md](./review-prompt.md) | Code review prompt |
+| [problem-description-prompt.md](./problem-description-prompt.md) | Problem description template prompt |
+
+## Tech Stack
+
+- Python
+- Polymarket API
+- ASCII Visualization