ci.yml

name: CI

on:
  # Deliberately NOT `dev`: it is the integration trunk and pushes land there
  # often and half-finished, so gating every one burns cycles for no signal.
  # `just gate` is the local check; `workflow_dispatch` runs CI on dev on demand.
  push:
    branches: [main]
  pull_request:
  workflow_dispatch:

jobs:
  test:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4

      # No toolchain action: the runner's rustup reads rust-toolchain.toml and
      # installs the pinned channel + components. Pinning the action to @stable
      # would override the file and reintroduce the drift it exists to prevent.
      - name: install the pinned toolchain (rust-toolchain.toml)
        run: rustup show

      - name: fmt check
        run: cargo fmt --check

      - name: clippy
        run: cargo clippy --all-targets -- -D warnings

      - name: test
        run: cargo test --all