feat: Add copy buttons to URL Encoder and enhance Base64 tool

[gweakliem]

Add copy buttons to URL Encoder and Base64 tools similar to JSON tools page

Changes:

• Add copy buttons to both Plain Text and Encoded Text textareas in URL Encoder
• Add copy button to input textarea in Base64 tool (output already had one)
• Use consistent styling and behavior with existing JSON tools implementation
• Copy buttons show success feedback with checkmark icon for 2 seconds

Fixes #12

🤖 Generated with Claude Code

[claude]

Claude finished @gweakliem's task —— View job

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Code Review Analysis

Reviewing the PR changes for code quality, best practices, and potential issues.

Todo List

• Read and analyze pages/utils/base64.vue changes
• Read and analyze pages/utils/urlencode.vue changes
• Compare with existing JSON tools implementation for consistency
• Evaluate code quality and best practices
• Check for potential bugs or security concerns
• Assess performance considerations
• Review test coverage implications
• Provide comprehensive feedback

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Review Summary

This PR successfully adds copy functionality to the URL Encoder and Base64 tools, maintaining consistency with the existing JSON tools implementation. Overall, this is a well-implemented enhancement with good attention to UX details.

✅ Positive Aspects

Consistency & Code Quality:

• Copy button styling and positioning is consistent across all tools (pages/utils/base64.vue:8-11, pages/utils/urlencode.vue:9-13)
• Proper use of Vue 3 Composition API with ref() for reactive state
• Clean template structure with logical component organization
• Consistent 2-second timeout for success feedback across all implementations

User Experience:

• Copy buttons show visual feedback with checkmark icon when successful
• Tooltips provide clear indication of button functionality
• Proper z-index handling to keep copy buttons above textarea content
• Copy buttons positioned consistently in top-right corner of textareas

Error Handling:

• Both implementations include proper error handling in copy functions (pages/utils/base64.vue:95-97, pages/utils/urlencode.vue:134-136, 145-147)
• Console error logging for debugging failed copy operations

🔍 Technical Analysis

Performance Considerations:

• ✅ Async/await pattern used properly for clipboard operations
• ✅ Minimal DOM manipulation and efficient state updates
• ✅ No unnecessary re-renders or watchers introduced

Security:

• ✅ No security concerns identified
• ✅ Uses standard Web API navigator.clipboard.writeText() - secure and appropriate
• ✅ No sensitive data exposure or unsafe operations

Browser Compatibility:

• ✅ Uses modern Clipboard API which has good browser support
• ✅ Proper error handling for cases where clipboard access might fail

🚀 Implementation Highlights

Base64 Tool Enhancement (pages/utils/base64.vue):

• Added copy button to input textarea (lines 7-11)
• Clean integration with existing result copy functionality
• Proper state management with copyInputSuccess ref

URL Encoder Enhancement (pages/utils/urlencode.vue):

• Copy buttons for both plain text and encoded text textareas
• Separate success states for each copy button (copyPlainSuccess, copyEncodedSuccess)
• Maintains the real-time encoding/decoding functionality while adding copy features

📋 Minor Observations

Code Style Consistency:

• Mix of TypeScript (lang="ts") in urlencode.vue vs regular JavaScript in base64.vue, but both work correctly
• Function naming and structure is consistent across implementations
• Error handling patterns match existing codebase conventions

Test Coverage:

• No tests appear to be included, but this follows the pattern of other utility pages in the codebase
• Copy functionality is straightforward and primarily involves Web APIs that are well-tested

🎯 Verdict

This is a solid, well-implemented PR that enhances user experience without introducing technical debt. The implementation follows existing patterns, maintains code quality, and provides valuable functionality that users will appreciate. No blocking issues identified.

Recommendation: ✅ Approved - Ready to merge with confidence.