ci: split into multiple files

.github/workflows/check.yml

@@ -0,0 +1,44 @@
+name: Check
+
+on: [push, pull_request]
+
+env:
+  RUST_BACKTRACE: 1
+
+jobs:
+  rustfmt:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v6
+
+      - uses: dtolnay/rust-toolchain@nightly
+        with:
+          components: rustfmt
+
+      - name: Check format
+        run: cargo fmt --all --check
+
+  check:
+    runs-on: ubuntu-latest
+    strategy:
+      fail-fast: false
+      matrix:
+        rust-toolchain:
+          - nightly
+          - nightly-2025-05-20
+          - nightly-2025-12-12
+          - stable
+    env:
+      RUSTC_BOOTSTRAP: "${{ matrix.rust-toolchain == 'stable' && '1' || '' }}"
+    steps:
+      - uses: actions/checkout@v6
+      - uses: dtolnay/rust-toolchain@master
+        with:
+          toolchain: ${{ matrix.rust-toolchain }}
+          components: clippy
+
+      - uses: taiki-e/install-action@cargo-hack
+      - name: Clippy
+        run: cargo hack clippy --feature-powerset -- -D warnings
+      - name: Test
+        run: cargo hack test --feature-powerset -- --nocapture

.github/workflows/docs.yml

@@ -0,0 +1,52 @@
+name: Docs
+
+on:
+  push:
+    branches:
+      - main
+  workflow_dispatch:
+
+permissions:
+  contents: read
+  pages: write
+  id-token: write
+
+concurrency:
+  group: pages
+  cancel-in-progress: false
+
+env:
+  RUST_BACKTRACE: 1
+  RUSTDOCFLAGS: -D rustdoc::broken_intra_doc_links -D missing-docs
+
+defaults:
+  run:
+    shell: bash
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v6
+      - uses: dtolnay/rust-toolchain@nightly
+
+      - name: Build docs
+        run: cargo doc --all-features --no-deps
+
+      - name: Add redirect
+        run: printf '<meta http-equiv="refresh" content="0;url=%s/index.html">' $(cargo tree | head -1 | cut -d' ' -f1) > target/doc/index.html
+
+      - uses: actions/configure-pages@v5
+      - uses: actions/upload-pages-artifact@v4
+        with:
+          path: target/doc
+
+  deploy:
+    runs-on: ubuntu-latest
+    needs: build
+    environment:
+      name: github-pages
+      url: ${{ steps.deployment.outputs.page_url }}
+    steps:
+      - id: deployment
+        uses: actions/deploy-pages@v4