story-kit: create 320_story_whatsapp_business_api_integration_for_bot_commands

.story_kit/work/1_backlog/320_story_whatsapp_business_api_integration_for_bot_commands.md

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+---
+name: "WhatsApp Business API integration for bot commands"
+---
+
+# Story 320: WhatsApp Business API integration for bot commands
+
+## User Story
+
+As a project owner, I want to interact with the bot via WhatsApp using the official WhatsApp Business Platform, so that I can manage the pipeline from WhatsApp alongside the existing Matrix support.
+
+## Acceptance Criteria
+
+- [ ] Webhook endpoint at /webhook/whatsapp receives incoming messages from Meta's API
+- [ ] Webhook verification handshake (GET request with hub.verify_token) implemented
+- [ ] Incoming messages are parsed and routed to the command dispatch (try_handle_command)
+- [ ] Outbound replies sent via POST to graph.facebook.com/v21.0/{phone_number_id}/messages
+- [ ] WhatsApp config in bot.toml: phone_number_id, access_token, verify_token, enabled flag
+- [ ] bot.toml.example documents the WhatsApp fields
+- [ ] All bot commands work (help, status, cost, git, show, delete, ambient, htop without editing)
+
+## Out of Scope
+
+- TBD