build,ci: specify MSRV and setup CI

.github/workflows/ci.yaml

@@ -47,7 +47,8 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        rust: [stable, beta]
+        # NB: Sync MSRV with Cargo.toml!
+        rust: [stable, beta, "1.88"]
     name: Test ${{ matrix.rust }}
     # Need libsqlite3-dev >= 3.38.0 (2022-02-22)
     runs-on: ubuntu-24.04
@@ -64,7 +65,7 @@ jobs:
 
       - name: Install Rust ${{ matrix.rust }}
         run: |
-          rustup update --no-self-update ${{ matrix.rust }}
+          rustup update --no-self-update
           rustup default ${{ matrix.rust }}
 
       - name: Disable webapi tests on stable rustc
@@ -80,9 +81,8 @@ jobs:
       - name: Test
         run: cargo test --workspace --all-targets
 
-        # WAIT: Next release of `criterion` for `--include-ignored`.
       - name: Test ignored
-        run: cargo test --workspace --all-targets -- --ignored
+        run: cargo test --workspace --all-targets -- --ignored-ignored
 
   nix-flake:
     name: Flake package