🐛 Fix free-ticket detection when price is nil

🐛 (purchase): replace manual hidden+checkbox inputs with Rails f.check_box helper

🐛 (purchase.js): broaden selector to catch non-select quantity inputs
✨ (event.erb): rename sticky bottom bar id for clarity
✨ (_purchase.erb): add single-free-ticket flow—hide ticket picker, pre-fill qty, hide payment buttons

🐛 (build.erb): always show purchase_url field to simplify form and avoid conditional display

🔒️ (account.rb): prevent admin accounts from being destroyed

🔒️ Add reCAPTCHA verification to membership join flow

• Verify g-recaptcha-response server-side before creating accounts
• Show client-side check when anonymous users submit the join form
• Gracefully skip if keys are absent (keeps dev env simple)

💄 (_badges.erb): add explicit aspect-ratio to badge images to prevent layout shift

🔧 Disable Termly auto-blocker in production

💄 (views): add aspect-ratio to org/gathering images to prevent layout shift

🔥 Remove deprecated Add-to-Home-Screen (A2HS) code

♻️ (helpers.rb): simplify blurred_image_tag by removing fixed_width and auto-size logic

💄 (photos): replace plain img tag with blurred_image_tag helper to show blurred preview while loading

Revert "
💄 Replace plain <img> tags with blurred_image_tag helper"

This reverts commit 233e63ce8a45249a97eda72a16d8f1be555bd2fa.

💄 (accounts/_top.erb): replace max_width with fixed_width for consistent image sizing

♻️ Rename max_width to fixed_width for clearer intent

🐛 (helpers): fix blurred_image_tag to auto-detect thumb size when width/height not given
✨ (helpers): add max_width option to blurred_image_tag for flexible layout control
💄 (views): replace fixed width/height with max_width for responsive account/org/activity images

🐛 Fix copy-link to copy full URL instead of truncated one

🍱 Add search page styles for admin interface

💄 Replace plain <img> tags with blurred_image_tag helper

🐛 (events): strip UTC suffix from displayed date/time