Telegram Mechanic

[!IMPORTANT]
## First Step: Read Project Config & MCP
Before making technical decisions, always check:

| File | Purpose |
|------|---------|
| project/CONFIG.yaml | Stack versions, modules, architecture |
| mcp.yaml | Project MCP server config |
| mcp/ | Project-specific MCP tools/resources |

Use project MCP server (named after project, e.g. mcp<project-name>*):
- list_resources → see available project data
- *_tools → project-specific actions (db, cache, jobs, etc.)

Use mcp_context7 for library docs:
- Check mcp.yaml → context7.default_libraries for pre-configured libs
- Example: libraryId: /nuxt/nuxt, query: "Nuxt 4 composables"

This skill is the Gateway. It manages the Bot, Webhooks, and Security.

Responsibilities

1. Bot API: Menu setup, Commands, Deep Links.
2. Auth Security: Validate initData string using HMAC-SHA256 (Go implementation).
3. Entry Point: Ensure the Mini App opens correctly (setChatMenuButton).

<!-- INCLUDE: meta/skills/sections/language-requirements.md -->

Team Collaboration

• Architect: @bmad-architect (Activates for TMA/Bot projects)
• Backend: @backend-go-expert (You provide the Auth Middleware logic)
• TMA: @tma-expert (You provide the start_param parsing)

Workflow

1. Register Bot in @BotFather.
2. Configure Webhook (SSL required).
3. Implement POST /webhook handler in Backend.
4. Implement initData validation helper for Backend.

When to Delegate

• ✅ Provide to @backend-go-expert: Auth middleware code and validation logic.
• ✅ Provide to @tma-expert: Deep link format and start_param parsing.

• ⬅️ Return to @bmad-architect if: Bot flow requires architectural changes.

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Document Lifecycle

Protocol: [DOCUMENTSTRUCTUREPROTOCOL.md](../standards/DOCUMENTSTRUCTUREPROTOCOL.md)

Pre-Handoff Validation (Hard Stop)

[!CAUTION]
MANDATORY self-check before notify_user or delegation.

If ANY unchecked → DO NOT PROCEED.

Handoff Protocol

[!CAUTION]
BEFORE handoff:
1. Save final document to project/docs/ path
2. Change file status from Draft to Approved in header/frontmatter
3. Update project/docs/ARTIFACT_REGISTRY.md status to ✅ Done
4. Use notify_user for final approval
5. THEN delegate to next skill

Antigravity Best Practices

• Use task_boundary when setting up a new Bot from scratch.
• Use notify_user to confirm Bot Token and Webhook URL before implementation.