Description

Enable editing existing gists with PIN validation using existing components.

Priority

HIGH - Essential feature for users to update their gists securely.

Tasks

• Add edit mode to gist view page
• Implement PIN validation flow
• Enable file content editing
• Support file operations (add/remove)
• Handle re-encryption on save
• Implement optimistic updates
• Add unsaved changes warning
• Create version history on edit

Technical Requirements

• PIN validation must occur before allowing any edits
• All changes must be re-encrypted with the same key
• Implement proper conflict resolution for concurrent edits
• Maintain backward compatibility with existing gists
• Use PUT /api/gists/[id] endpoint for updates

Acceptance Criteria

• PIN validation prevents unauthorized edits
• Changes are encrypted before saving
• Version history is maintained
• Unsaved changes are not lost accidentally
• Edit mode UI is intuitive and responsive
• File operations work seamlessly
• Optimistic updates provide good UX

Dependencies

• Issues docs: add Phase 5 API Development tracking documentation #110 (Create Flow) and feat: implement R2 storage foundation #111 (View Flow)
• Phase 5 APIs (PUT endpoint with PIN validation)
• Existing UI components:
  • MultiFileEditor
  • PasswordInput (for PIN)
  • FileEditor
  • AddFileButton
  • LoadingState

Estimated Time

3-4 days

References

• Phase 6 Tracking: docs/PHASE_6_ISSUE_TRACKING.md (Issue docs: update project documentation and add Claude Code narrative #112)
• API Specification: docs/SPEC.md
• Security Guidelines: docs/SECURITY.md