Twitch: Documentation (CONTEXT.md) + ETL Scaffolding

[danielhe4rt]

Parent

#266 — Twitch EventSub: ingestão de eventos via webhook (data lake)

What to build

Domain documentation for the integration-twitch module and empty ETL directory scaffolding for future event processing work.

End-to-end behavior

After this slice, the module has a CONTEXT.md with glossary and structure documentation, the CONTEXT-MAP.md includes Integration Twitch in the system map, the integration-discord CONTEXT.md has a broadened ETL definition, and the ETL/ directory structure exists and is ready for future Actions/DTOs/Console work.

What changes

New — Documentation:

• app-modules/integration-twitch/CONTEXT.md — glossary (Transport, TwitchHelixConnector, TwitchOAuthConnector, App Access Token, EventSub, TwitchEventLog, ETL), structure diagram, module boundaries, dependencies

Updated — Documentation:

• CONTEXT-MAP.md — add Integration Twitch context to table and relationship diagram, add dependency rule
• app-modules/integration-discord/CONTEXT.md — broaden ETL definition from "historical data import" to "layer that transforms external data into domain entities" (covers both batch and real-time)

New — ETL Scaffolding:

• ETL/Actions/ directory (empty, with .gitkeep)
• ETL/Console/ directory (empty, with .gitkeep)
• ETL/DTOs/ directory (empty, with .gitkeep)

Acceptance criteria

• app-modules/integration-twitch/CONTEXT.md exists with glossary, structure, boundaries, and dependencies
• CONTEXT-MAP.md includes Integration Twitch in the contexts table and relationship diagram
• CONTEXT-MAP.md dependency rules include Integration Twitch
• integration-discord/CONTEXT.md ETL definition broadened to cover batch and real-time
• ETL/Actions/, ETL/Console/, ETL/DTOs/ directories exist with .gitkeep files
• All documentation uses the project's domain glossary vocabulary

Blocked by

None — can start immediately.

Note: The CONTEXT.md and CONTEXT-MAP.md changes have already been drafted in the current branch. This issue covers reviewing, finalizing, and committing them alongside the ETL scaffolding.