chore: add pre-commit hooks and CI coverage reporting

- Add pre-commit hook for JS/TS and CSS lint checks
- Add setup script to install hooks
- Add coverage reporting to CI workflow
- Add coverage threshold warning (60%)
- Update CONTRIBUTING.md with hooks setup instructions

.github/workflows/build.yml

@@ -90,10 +90,10 @@ jobs:
           chmod +x _tests/bin/Radarr
           find _tests -name "Radarr.Test.Dummy" -exec chmod a+x {} \;
 
-      - name: Test
+      - name: Test with coverage
         shell: bash
         continue-on-error: true
-        run: ./test.sh Linux Unit Test
+        run: ./test.sh Linux Unit Coverage
 
       - name: Report test results
         uses: dorny/test-reporter@v2
@@ -106,6 +106,36 @@ jobs:
           fail-on-error: false
           fail-on-empty: false
 
+      - name: Generate coverage report
+        uses: danielpalme/ReportGenerator-GitHub-Action@5
+        if: always()
+        with:
+          reports: "**/coverage.cobertura.xml"
+          targetdir: CoverageReport
+          reporttypes: "HtmlInline;Cobertura;TextSummary"
+
+      - name: Upload coverage to Codecov
+        uses: codecov/codecov-action@v4
+        if: always()
+        continue-on-error: true
+        with:
+          files: "**/coverage.cobertura.xml"
+          fail_ci_if_error: false
+
+      - name: Check coverage threshold
+        if: always()
+        shell: bash
+        run: |
+          if [ -f CoverageReport/Summary.txt ]; then
+            COVERAGE=$(grep -oP 'Line coverage: \K[\d.]+' CoverageReport/Summary.txt || echo "0")
+            echo "Line coverage: ${COVERAGE}%"
+            if (( $(echo "$COVERAGE < 60" | bc -l) )); then
+              echo "::warning::Coverage is below 60% threshold (${COVERAGE}%)"
+            fi
+          else
+            echo "::warning::Coverage report not found"
+          fi
+
       - name: Free disk space
         run: |
           sudo rm -rf /usr/share/dotnet /usr/local/lib/android /opt/ghc /usr/local/share/boost

CONTRIBUTING.md

@@ -31,9 +31,10 @@ Aletheia is written in C# (backend) and JS (frontend). The backend is built on .
 
 1. Clone the repository: `git clone https://github.com/cheir-mneme/aletheia.git`
 1. Install dependencies and build as described below
+1. (Optional) Install pre-commit hooks: `./scripts/setup-hooks.sh`
 
-> Be sure to run lint `yarn lint --fix` on your code for any front end changes before committing.
-For css changes `yarn stylelint-windows --fix` {.is-info}
+> The pre-commit hooks will automatically run lint checks before each commit.
+> You can also run lint manually: `yarn lint --fix` for JS/TS, `yarn stylelint-linux --fix` for CSS.
 
 ### Building the frontend
 

scripts/pre-commit

@@ -0,0 +1,37 @@
+#!/bin/bash
+# Pre-commit hook for Aletheia
+
+set -e
+
+echo "Running pre-commit checks..."
+
+# Check if there are any staged frontend files
+STAGED_JS=$(git diff --cached --name-only --diff-filter=ACM | grep -E '\.(js|jsx|ts|tsx)$' | grep '^frontend/' || true)
+
+if [ -n "$STAGED_JS" ]; then
+    echo "Checking JavaScript/TypeScript lint..."
+    yarn lint --quiet 2>/dev/null || {
+        echo "ESLint errors found. Run 'yarn lint-fix' to auto-fix."
+        exit 1
+    }
+fi
+
+# Check if there are any staged CSS files
+STAGED_CSS=$(git diff --cached --name-only --diff-filter=ACM | grep -E '\.css$' | grep '^frontend/' || true)
+
+if [ -n "$STAGED_CSS" ]; then
+    echo "Checking CSS lint..."
+    if [[ "$OSTYPE" == "msys" ]] || [[ "$OSTYPE" == "win32" ]]; then
+        yarn stylelint-windows --quiet 2>/dev/null || {
+            echo "Stylelint errors found."
+            exit 1
+        }
+    else
+        yarn stylelint-linux --quiet 2>/dev/null || {
+            echo "Stylelint errors found."
+            exit 1
+        }
+    fi
+fi
+
+echo "Pre-commit checks passed."

scripts/setup-hooks.sh

@@ -0,0 +1,18 @@
+#!/bin/bash
+# Install git hooks for Aletheia development
+
+SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
+HOOKS_DIR="$SCRIPT_DIR/../.git/hooks"
+
+echo "Installing git hooks..."
+
+if [ -f "$HOOKS_DIR/pre-commit" ]; then
+    echo "Backing up existing pre-commit hook..."
+    mv "$HOOKS_DIR/pre-commit" "$HOOKS_DIR/pre-commit.backup"
+fi
+
+cp "$SCRIPT_DIR/pre-commit" "$HOOKS_DIR/pre-commit"
+chmod +x "$HOOKS_DIR/pre-commit"
+
+echo "Git hooks installed successfully."
+echo "Run 'yarn install' to ensure lint dependencies are available."