Hardcoded "Signer" roleName caused envelopes to send without tags. Now
fetches template recipients first and assigns test recipient to every role,
falling back to "Signer" only if the template fetch fails.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
Backend (web/routers/verify.py): POST /send (creates envelope from template),
GET /status/{id} (polls envelope state), POST /void/{id} (voids test envelope).
Registered in app.py. 7 tests passing.
Frontend (verification.js): table of migrated templates, Send Test button opens
dialog with pre-filled name/email from settings, polling every 5s, per-row
status updates (Sent → Delivered → Verified), Void button for cleanup.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
Paul Huliganga