Add Edit/Delete Options for Owner

[yuvraj-rathod-1202]

🧩 Feature / Task

Add "Edit" and "Delete" options to the hackathon listings on the user's dashboard. These options should only be visible to the original uploader of the hackathon, allowing them to manage their own submissions.

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✅ Acceptance Criteria

• Each hackathon listed on public/dashboard.html has "Edit" and "Delete" buttons/links.
• These buttons are only displayed if the creatorId of the hackathon matches the ID of the currently logged-in user.
• Clicking "Edit" redirects the user to the upload form with the hackathon's existing data pre-filled.
• Clicking "Delete" prompts for confirmation and then removes the hackathon from Firestore.

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🚧 Steps To Do

1. In public/dashboard.html (or in the JavaScript that renders hackathon cards), add HTML for "Edit" and "Delete" buttons to each hackathon listing.
2. In scripts/features/dashboard.js (when rendering hackathons), add a conditional check: if (hackathon.creatorId === currentUserId) { /* show edit/delete buttons */ }.
3. For "Edit":
   • Attach an event listener to the "Edit" button.
   • When clicked, navigate to public/upload.html and pass the hackathon ID as a URL parameter (e.g., upload.html?id=hackathonId).
   • In upload.html (or uploadHackathon.js), check for this ID and if present, fetch the hackathon data from Firestore and pre-fill the form.
4. For "Delete":
   • Attach an event listener to the "Delete" button.
   • Prompt the user for confirmation (e.g., confirm('Are you sure you want to delete this hackathon?')).
   • If confirmed, use firebase.firestore().collection('hackathons').doc(hackathonId).delete() to remove the document.
   • Refresh the displayed list of hackathons after deletion.

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📁 Related Files / Areas

• public/dashboard.html
• public/upload.html
• scripts/features/dashboard.js
• scripts/features/uploadHackathon.js (for edit pre-fill logic)
• Firebase: Firestore

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🧩 Priority

Priority: 🟡 Medium

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🔗 Dependencies

Depends on: #24, #21

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🖼️ Reference

• Firebase Firestore documentation for updating/deleting documents