feat: add beta label and feedback modal

[holkexyz]

Summary

• Adds a "beta" label next to the Certified wordmark in the navbar
• Adds a floating "Share Feedback" button (bottom-right) with a modal for submitting feedback
• Feedback is emailed to support@hypercerts.org via Resend; optional confirmation email sent to user
• Button stays above the footer when scrolled to bottom
• Modal has an expand/shrink toggle on desktop

Setup

• Requires RESEND_API_KEY env var (and verified certified.one domain in Resend)
• Optional RESEND_FROM_EMAIL override (defaults to Certified <no-reply@certified.one>)

Test plan

• Verify "beta" label appears next to wordmark in navbar
• Click "Share Feedback" button, confirm modal opens
• Submit feedback without email — check support@hypercerts.org receives it
• Submit feedback with email — check both support and user receive emails
• Test email validation on the optional field
• Scroll to bottom of page — confirm button stays above footer
• Test expand/shrink toggle on desktop
• Test on mobile — modal goes full-width, expand button hidden

🤖 Generated with Claude Code

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Project	Deployment	Actions	Updated (UTC)
certified-app	Ready	Preview, Comment	Apr 2, 2026 0:47am

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