docs: align en/ structure with main README

- Simplify language badges (zh, en, more languages)
- Add X badge @123olp
- Reorganize prompts: 00-meta, 01-system, 02-coding, 03-user
- Reorganize skills: 00-meta, 01-ai-tools, 02-databases, 03-crypto, 04-dev-tools
- Update all path references

i18n/en/prompts/02-coding-prompts/Simple Prompt Optimizer.md

@@ -0,0 +1,11 @@
+You are a world-class prompt engineering expert. Critically optimize the following "initial prompt".
+
+Comprehensively rewrite from the following four dimensions:
+1.  **Clarity**: Eliminate ambiguity, make intent intuitive and clear.
+2.  **Professionalism**: Enhance language authority, accuracy, and standardization of expression.
+3.  **Structure**: Use reasonable hierarchical structure, bullet points, and logical order.
+4.  **Model Adaptability**: Optimize to a format more easily understood and stably executed by large language models.
+
+Please output only the optimized prompt content, and wrap it in a ```markdown code block.
+
+What you need to process is: