Fix tasks page responsive layout and visual consistency

[imuniqueshiv]

📌 Description

This PR improves the Tasks page layout responsiveness and visual consistency by restructuring the page layout, reducing unused side spacing, and improving EmptyState integration with the overall UI.

🔗 Related Issue

Closes #469

🛠 Changes Made

• Converted the constrained centered layout into a responsive full-width layout
• Improved content hierarchy using a two-column dashboard structure
• Reduced excessive empty side spacing on larger screens
• Improved visual consistency between the page background and EmptyState section
• Properly aligned insights widgets as a responsive sidebar for better usability
• Fixed missing Trash2 import issue

📸 Screenshots

After Update

Before Update

✅ Checklist

• Code runs locally
• Followed project structure
• No console errors
• Properly tested changes
• Linked the issue

🚀 Notes for Reviewers

This PR focuses only on layout responsiveness, spacing improvements, and visual consistency for the Tasks page without modifying unrelated functionality.

[aryandas2911]

@imuniqueshiv i kindly request you to read the contributing.md and apply linting to not increase the workload from our side, pls do the linting task