feat: improve project

.github/workflows/ci.yaml

@@ -1,30 +1,52 @@
 name: Cargo Build & Test
 
 on:
-  push: 
-    branches: 
+  push:
+    branches:
       - master
   pull_request:
     branches:
       - master
 
-env: 
+env:
   CARGO_TERM_COLOR: always
 
 jobs:
-  build_and_test:
-    name: cls project - latest
+  # Formatting + clippy run once on stable; rustfmt/clippy output is toolchain-specific, so it is
+  # not gated on the MSRV toolchain.
+  lint:
+    name: Lint (fmt + clippy)
     runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - run: rustup update stable && rustup default stable
+      - run: cargo fmt -- --check
+      - run: cargo clippy --locked --workspace --all-targets -- -D warnings
+
+  # The extension ships linux + mac binaries (see client.ts bundledBinaryPath). Windows is not a
+  # supported target — Windows users run the server under WSL — so the test matrix covers linux +
+  # mac only.
+  test:
+    name: Test (stable) / ${{ matrix.os }}
+    runs-on: ${{ matrix.os }}
     strategy:
+      fail-fast: false
       matrix:
-        toolchain:
-          - stable
+        os: [ubuntu-latest, macos-latest]
+    steps:
+      - uses: actions/checkout@v4
+      - run: rustup update stable && rustup default stable
+      - run: cargo build --locked --verbose
+      - run: cargo test --locked --verbose
 
+  # MSRV: build + test on the declared minimum Rust (workspace `rust-version`). Deterministic
+  # because Cargo.lock is committed; `--locked` refuses to drift above it. No fmt/clippy here —
+  # those are toolchain-specific and gated in the `lint` job.
+  msrv:
+    name: MSRV (1.71)
+    runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
-      - run: rustup update ${{ matrix.toolchain }} && rustup default ${{ matrix.toolchain }}
-      - run: cargo clippy
-      - run: cargo fmt -- --check 
-      - run: cargo build --verbose
-      - run: cargo test --verbose
-
+      - uses: actions/checkout@v4
+      - run: rustup update 1.71.0 && rustup default 1.71.0
+      - run: cargo build --locked --verbose
+      - run: cargo test --locked --verbose

.gitignore

@@ -2,7 +2,6 @@ out
 node_modules
 .vscode-test
 /target
-Cargo.lock
 assets
 *.new
 *.pending-snap