Create Secure Human-in-the-Loop Approval Flows with Postgres and Telegram

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🔐 Human-in-the-Loop Approval Flow (n8n + Postgres + Telegram) 👥 Who’s it for Teams that need a manager approval step before a ticket or request can change status. Great for internal ops, IT requests, or any workflow where “a human must sign off.” ⚡ What it does 📨 Manager receives approval/reject link 🔑 Link is signed with HMAC + expiry (secure & tamper-proof) 🗄️ Postgres updates the ticket status 📝 Audit trail records every decision 📲 Telegram notifies both manager and reque