feat(contacts): add automatic customer scan to import contacts from channel history

[viethung0o0]

Summary

• Adds Automatic Customer Scan next to the file import: pick a connected inbox and a "scan from" time, and contacts are created from the channel's conversation history back to that time.
• Works for Messenger and Instagram. Dedicated pages for the scan and its history, with a 24h cooldown per inbox.

Test plan

• pnpm --filter <pkg> check-types (database, business, worker, builder, utils, worker-config, integration-instagram)
• pnpm --filter @chatbotx.io/database lint (schema drift in sync)
• pnpm --filter builder lint (i18n key parity across all locales)
• pnpm --filter @chatbotx.io/database test / @chatbotx.io/business test / worker test / builder test (coexist regression intact)
• db:migrate — awaiting explicit approval per repo policy before applying
• Manual: run a Messenger and an Instagram scan; contacts import and the history shows the run
• Manual: a second scan within 24h is blocked; a contacts-restricted member cannot open the pages or schedule a scan