Add codecov configuration file

.github/workflows/ci.yml

@@ -32,8 +32,14 @@ jobs:
       - name: Build project
         run: cargo build --verbose
 
-      - name: Generate coverage report
-        run: cargo llvm-cov --lcov --output-path lcov.info
+      - name: Generate coverage and check threshold
+        run: |
+          COVERAGE=$(cargo llvm-cov report | grep "TOTAL" | awk '{print $4}' | sed 's/%//')
+          echo "Coverage: $COVERAGE%"
+          if (( $(echo "$COVERAGE < 80" | bc -l) )); then
+          echo "Coverage is below 80%"
+          exit 1
+          fi
 
       - name: Upload coverage to Codecov
         uses: codecov/codecov-action@v5

codecov.yml

@@ -0,0 +1,9 @@
+coverage:
+  status:
+    project:
+      default:
+        target: 80%
+        threshold: 1%
+    patch:
+      default:
+        target: 80%