# Strategy files and fg.load

2026-10-01 - new - language

## What changed

A strategy is now written as one `fg.Strategy` class per file, with `FORGE_API = 1` at the top. Settings are declared with `fg.param` as class attributes, and `fg.Meta` names the strategy and its tags. `setup(self, ctx)` may raise `fg.InvalidParams` to reject a combination of settings.

`fg.load(path)` runs a file's top level, checks it and returns the checked program. A refused file raises an error whose findings list every problem with its line. Loading runs the file's top-level code, so load only code you trust.

`Strategy.describe()` returns the machine description of a strategy's settings: a JSON Schema with each range, group, label and help.