Fix large analysis results by adding collapsible sections

[sharwari0109]

Description

This PR improves the frontend experience for large analysis results by introducing collapsible sections for both Debug and Suggestions outputs.

Changes made

• Converted Debug issue cards into expandable/collapsible sections using <details> and <summary>
• Converted Suggestion cards into expandable/collapsible sections
• Reduced UI clutter when analysis returns many results
• Preserved all existing functionality, styling, and analysis behavior

Related Issue

Fixes #529

Type of change
[ ] New feature / enhancement
[ ] Documentation update
[ ] Test addition
[ ] Refactor

Checklist

• I have read CONTRIBUTING.md
• My branch is up to date with main
• I have run pytest -v and all tests pass
• I have not introduced duplicate issues or features
• My PR title follows the format: feat/fix/docs/test: short description
• I have added tests for new features (Not applicable – frontend-only UI change)
• No hardcoded secrets or API keys in my code
• This PR is linked to a GSSoC 2026 issue

Screenshots (if frontend change)

Before

• Large analysis results displayed all content at once
• Difficult to navigate when many issues/suggestions were returned

After

• Results are displayed in collapsible cards
• Users can expand only the sections they want to inspect
• Improved readability and navigation for large outputs

Test evidence

pytest -v

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416 passed, 1 warning in 32.57s
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