You are working in a bino report project. The current directory is the project root
(it has a bino.toml). The only input is `data/sales_2025.csv`: monthly revenue in EUR for
Kestrel Outdoor GmbH in 2025, per sales region (North, South, East, West, Export), as
actual and as plan.

Build a one-page IBCS report for the monthly management meeting that answers:
"Did we hit the 2025 revenue plan, and which region drives the deviation?"

The page should have:
- a message title that states the main finding, taken from the data,
- a chart of actual vs. plan by month with the plan variance,
- a table by region with actual, plan and the variance to plan (absolute and relative),
- one or two short sentences of commentary that are true for this data.

Rules:
- Work only through the bino MCP tools. You have no file or shell tools.
- Read the bino://skills/bino-concepts, bino://skills/bino-authoring and
  bino://skills/bino-ibcs resources first.
- Use introspect_source on the CSV before you write the DataSource.
- Check every manifest with validate_draft before you write it, and check the data
  of your DataSets with get_rows.
- Name the ReportArtefact `sales_2025_report` and render it with the build tool.
- After the build, call get_layout_state and fix what it reports. Rebuild until the
  page is clean.
- End with a short summary: the files you wrote and the main finding.