Fivetran to Bruin migrator

Use this skill when a user wants to migrate one Fivetran connection to Bruin. Read the repository-root fivetran-bruin-prompt.md and plan.md before acting. Follow the prompt's stages in order.

Use the sibling import_fivetran.py for Fivetran access. It makes GET requests only and writes redacted captures to .artifacts/ at the repository root.

Rules:

• Capture exactly one connection selected by the user.
• Prefer an approved connector ID, which fetches that connection directly; a connector name must match the Fivetran connection name exactly.
• Never expose or store credentials, source data, endpoints, or Fivetran state.
• Treat .bruin.yml and .artifacts/ as sensitive even when they are Git-ignored: do not print them, pass them to AI subprocesses, or copy them into generated documentation.
• Create the new bruin/ project yourself; do not expect generated assets.
• Pause after connection placeholders, before any destination write, and after each approved v0 run.
• Keep repository-root plan.md current with facts, decisions, TODOs, run history, source-consistency boundaries, unsupported behavior, and cutover work.
• Before a historical ingestr run, obtain explicit start/end bounds and a source-consistency boundary; --full-refresh does not by itself make the ingestr source interval unbounded.
• Run approved aggregate parity and quality checks after every v0 load. Use cross-platform data diff as a pass/fail gate only when its representation is explicitly reviewed as comparable.
• Never use the importer --replace flag during a migration; preserve a new, timestamped capture instead.
• Do not enable schedules, run destructive refreshes, or disable Fivetran without explicit user approval.