Add individual copy buttons to publisher finish payout view

[Copilot]

Add individual copy buttons to publisher-finish-payout view

This PR adds convenient individual copy buttons to the publisher-finish-payout view that allow staff members to easily copy each payout field (email, amount, and subject) independently to their clipboard for pasting into PayPal.

Plan:

• Add individual copy buttons to the publisher-payout-finish.html template
• Implement JavaScript functionality to copy amount, email, and subject text to clipboard
• Style the buttons to match existing Bootstrap 4 design patterns
• Add tests to verify the copy buttons are present in the view
• Manually test the functionality in a browser to ensure it works correctly
• Address code review feedback (reduce duplication)
• Run security checks

Changes Made:

1. Template Update: Added individual copy icon buttons next to email, amount, and subject fields
2. JavaScript: Implemented clipboard functionality with:
   • Modern Clipboard API with fallback for older browsers
   • Individual copy buttons for each field
   • Visual feedback (button turns green with checkmark for 1.5 seconds)
   • Proper error handling
3. IDs: Added IDs to amount, email, and subject fields for JavaScript access
4. Test: Added assertions to verify copy buttons are present in existing test
5. Code Quality: Refactored to eliminate duplication using constants and helper function

UI Preview:

Individual copy buttons next to each field:

After clicking (button turns green with checkmark):

How it works:

• Click the copy icon next to any field (email, amount, or subject) to copy just that value
• The button briefly turns green with a checkmark to confirm the copy
• Each field can be copied independently for pasting into PayPal

Security Summary:

• ✅ No security vulnerabilities detected by CodeQL
• ✅ No user input is processed - only copying displayed data
• ✅ Uses standard browser APIs safely

Original prompt

Add a copy button to the publisher-finish-payout view that allows me to easily copy the amount, email, and text

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[davidfischer]

We probably just want little paste icons next to email, amount, and description, right?

[ericholscher]

@davidfischer you shouldn't be reviewing these until they're marked Ready for review, but yea, that is what I wanted, but didn't specify clearly enough :)

@copilot fix it

[Copilot]

@davidfischer you shouldn't be reviewing these until they're marked Ready for review, but yea, that is what I wanted, but didn't specify clearly enough :)

@copilot fix it

Done in commit e367b72. Added individual copy icons next to email, amount, and subject fields. Each button copies just that field's value and shows a green checkmark for visual feedback.

UI with individual copy buttons:

After clicking (button turns green with checkmark):

[ericholscher]

@davidfischer This is looking close now. Not sure if this is the best way to copy text, but seems workable. It works great locally 💯