Removed leftover modal HTML fragments (modal-header, modal-footer,
data-dismiss="modal") that were causing accessibility errors and
non-functional close button.
Replaced with clean, standalone card-based layout with:
- Proper close button linking to homepage
- Bootstrap card structure with modern styling
- Working "Show Credentials" button with jQuery
- "Back to Home" link in footer
- Removed problematic aria-hidden attributes
Fixes: "Blocked aria-hidden on an element because its descendant
retained focus" accessibility error
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude <noreply@anthropic.com>
no functional change here, but familiar Rails users will see view files in the
locations they expect. this also slightly simplifies controller code
there is one attendant change in the wiki at `rails_3/A1-SQL-Injection-Interpolation.md`
that I'm happy to make after the PR is merged.