chore: adds % sensitivity

Author: 0xItadaki

.github/workflows/coverage.yml

@@ -3,6 +3,9 @@ name: Coverage Check
 on:
   pull_request:
 
+env:
+  COVERAGE_SENSITIVITY_PERCENT: 1
+
 jobs:
   base-coverage:
     name: Generate base coverage
@@ -90,6 +93,16 @@ jobs:
       - name: Setup LCOV (for current PR coverage summary)
         uses: hrishikesh-kadam/setup-lcov@v1
 
+      - name: Compute minimum coverage threshold
+        id: compute-min
+        run: |
+          base="${{ needs.base-coverage.outputs.base-coverage }}"
+          sens="${{ env.COVERAGE_SENSITIVITY_PERCENT }}"
+          [ -z "$base" ] && base=0
+          [ -z "$sens" ] && sens=0
+          min=$(awk -v b="$base" -v s="$sens" 'BEGIN{v=b-s; if (v<0) v=0; printf "%.2f", v}')
+          echo "minimum=$min" >> "$GITHUB_OUTPUT"
+
       # Updates the comment on every PR push
       - name: Create a comment on the PR with the current branch coverage
         id: new-coverage
@@ -99,4 +112,4 @@ jobs:
           coverage-files: lcov.info
           github-token: ${{ github.token }}
           update-comment: true
-          minimum-coverage: ${{ needs.base-coverage.outputs.base-coverage }}
+          minimum-coverage: ${{ steps.compute-min.outputs.minimum }}