Add just and coverage check to CI

.forgejo/workflows/check.yaml

@@ -6,21 +6,26 @@ jobs:
       image: rust:slim
     steps:
       - name: install action dependencies
-        run: apt install --no-install-recommends --update -y nodejs
+        run: apt install --no-install-recommends --update -y nodejs just
       - name: setup toolchain
-        run: rustup component add rustfmt clippy
+        run: |
+          rustup component add rustfmt clippy
+          cargo install cargo-llvm-cov --locked
+
       - name: checkout code
         uses: actions/checkout@v6
 
-      - name: cargo build
-        run: cargo build
+      - name: build
+        run: just build
 
       - name: format
-        run: cargo fmt -- --check
+        run: just format-assess
       - name: lint
-        run: cargo clippy -- -Dwarnings
-      - name: format
-        run: cargo fmt -- --check
+        run: just lint
+      - name: check
+        run: just check
       - name: test
-        run: cargo test
+        run: just test
+      - name: coverage
+        run: just cover-assess