chore: add cross-platform ci

Run linting on Linux and tests on Linux, macOS, and Windows so portability regressions are caught before merge.

Author: kalaninja

.github/workflows/ci.yml

@@ -0,0 +1,66 @@
+name: CI
+
+on:
+  pull_request:
+  push:
+    branches:
+      - main
+  workflow_dispatch:
+
+permissions:
+  contents: read
+
+concurrency:
+  group: ci-${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
+
+env:
+  CARGO_TERM_COLOR: always
+
+jobs:
+  lint:
+    name: Lint
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Check out repository
+        uses: actions/checkout@v4
+
+      - name: Install stable Rust toolchain
+        uses: dtolnay/rust-toolchain@stable
+        with:
+          components: rustfmt, clippy
+
+      - name: Cache cargo artifacts
+        uses: Swatinem/rust-cache@v2
+
+      - name: Check formatting
+        run: cargo fmt --all -- --check
+
+      - name: Run clippy
+        run: cargo clippy --workspace --all-targets --all-features -- -D warnings
+
+  test:
+    name: Test (${{ matrix.os }})
+    runs-on: ${{ matrix.os }}
+
+    strategy:
+      fail-fast: false
+      matrix:
+        os:
+          - ubuntu-latest
+          - windows-latest
+          - macos-latest
+
+    steps:
+      - name: Check out repository
+        uses: actions/checkout@v4
+
+      - name: Install stable Rust toolchain
+        uses: dtolnay/rust-toolchain@stable
+
+      - name: Cache cargo artifacts
+        uses: Swatinem/rust-cache@v2
+
+      - name: Run tests
+        run: cargo test --workspace

AGENTS.md

@@ -45,6 +45,15 @@ If any of these files appear later, treat them as high-priority constraints and
 - Run tests and show stdout/stderr: `cargo test --workspace -- --nocapture`
 - List discovered tests: `cargo test --workspace -- --list`
 
+### GitHub CI
+- Workflow file: `.github/workflows/ci.yml`
+- Triggers: pushes to `main`, pull requests, and `workflow_dispatch`
+- `lint` job (`ubuntu-latest`):
+  - `cargo fmt --all -- --check`
+  - `cargo clippy --workspace --all-targets --all-features -- -D warnings`
+- `test` job matrix (`ubuntu-latest`, `windows-latest`, `macos-latest`):
+  - `cargo test --workspace`
+
 ### Running a Single Test (important)
 - By substring match: `cargo test -p <package> name_substring`
 - Exact unit test name: `cargo test -p <package> exact_test_name -- --exact`
@@ -153,6 +162,7 @@ If one cannot be run locally, explicitly note that in your handoff.
 - Format check: `cargo fmt --all -- --check`
 - Lint: `cargo clippy --workspace --all-targets --all-features -- -D warnings`
 - Test all: `cargo test --workspace`
+- GitHub CI workflow: `.github/workflows/ci.yml`
 - Test one (substring): `cargo test -p <package> name_substring`
 - Test one (exact): `cargo test -p <package> exact_test_name -- --exact`
 - List tests: `cargo test --workspace -- --list`

README.md

@@ -1,5 +1,7 @@
 # Gitlane
 
+[![CI](https://github.com/chapiteau-team/gitlane/actions/workflows/ci.yml/badge.svg?branch=main)](https://github.com/chapiteau-team/gitlane/actions/workflows/ci.yml)
+
 Gitlane is a Git-native task tracker.
 All tracker data is stored as Markdown files in the repository.
 

crates/cli/src/path.rs

@@ -118,6 +118,8 @@ mod tests {
         .expect("project config should be created");
 
         gitlane_dir
+            .canonicalize()
+            .expect(".gitlane path should canonicalize")
     }
 
     #[test]