feat(auth): Improve registration and session UX

feat(auth): Improve registration and session UX

chore: Publish canonical B2 travel assistant

chore: Publish canonical B2 travel assistant

fix(preview): Preserve empty Plan B state

fix(preview): Bridge canonical UI session to API

fix(preview): Persist browser API session

fix(preview): Report local deployment commit

fix(preview): Restore canonical Vercel entrypoint

feat(preview): Restore canonical teammate parity

docs: Plan canonical teammate reintegration

docs: Define canonical teammate reintegration

test(preview): Parameterize consumer smoke origin

fix(ocr): Remove native canvas runtime dependency

docs(parity): Record audit and preview safeguards

test(bot): cover route and Plan B parity

fix(security): bound OCR images and escape documents

feat(documents): serve authorized document downloads

feat(documents): add bounded OCR review flow

fix(integration): Enable Telegram deep-link account linking

docs(integration): record production verification