feat: suggest Weekly (7-day) Forecast Summary feature (#40)

[saanidhi-git]

📝 Summary

This PR proposes a Weekly (7-day) Forecast Summary feature for the Weather App.
Currently, the app shows only a 3-day weather forecast for a selected city. Users cannot quickly view the full week’s weather, which makes planning activities for the entire week less convenient.
This feature suggestion provides a clear, lightweight, and achievable way to enhance usability without requiring any login or backend changes.

✅ Proposed Feature Details

• Display the next 7 days in a simple card or table format.
• Each day’s card will show:
  • Day of the week
  • Min/Max temperature
  • Weather condition icon
  • Optional precipitation/humidity
• Layout will be responsive for mobile and desktop using CSS Flexbox/Grid.
• Dynamic generation of cards using JavaScript and existing weather API.
• No user login required; fully compatible with current HTML/CSS/JS structure.

🔧 Implementation Approach

• HTML5: Section/container for 7-day cards.
• CSS3: Responsive layout and styling.
• JavaScript (ES6+): Fetch API data and dynamically render forecast cards.
• Optional Enhancements: Highlight current day, show tooltips, or add icons for better visualization.

⚖️ Alternatives Considered

• Detailed charts (line or bar graphs) were considered but deemed too complex for the current app setup.
• Simple cards maintain the app’s lightweight and beginner-friendly nature.

🔗 Related Issue

Closes #40 (feat: Suggest New Features or Improvements)

💡 Additional Context

• Enhances user experience by providing a full 7-day forecast at a glance.
• Fully achievable within the existing app structure.
• Designed to be beginner-friendly and Hacktoberfest-eligible.

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