✨ Align explanation texts and textareas on lab creation page

[pr-pilot-ai[bot]]

This PR aligns the explanation texts and their respective textareas on the lab creation page, improving the overall user experience.

UI Enhancements

• Aligns explanation texts and textareas side by side for better readability.
• Updates various text elements to improve clarity and consistency.

Code Changes

• engine/agents/pr_pilot_agent.py: Adjusts the order of file save and commit operations.
• labs/templates/create_experiment.html: Aligns textareas and updates text content.
• labs/templates/lab_base.html: Adds blinking animation for running experiments.
• labs/templates/lab_root.html: Updates button styles and text content.
• labs/templates/view_experiment.html: Adds social media sharing buttons and updates layout.
• labs/views.py: Renders markdown for user requests and results.