Add README coverage badge and PR coverage checks

Run the PR test workflow through npm run test:coverage and generate a
repo-hosted coverage badge payload from coverage summary output.

Use c8 directly from npm scripts and emit text, lcov, and json-summary
reports so CI can update badge data without external coverage services.

Replace the README coverage badge source with a shields endpoint that
reads badges/coverage.json, auto-commit badge updates on master pushes,
handle non-fast-forward push races with fetch/rebase retries, and scope
write token permission to a push-only badge update job.

Co-authored-by: kiloconnect[bot] <240665456+kiloconnect[bot]@users.noreply.github.com>

Author: PeterDaveHello

.github/workflows/pr-tests.yml

@@ -12,6 +12,7 @@ on:
       - "tests/**"
       - "package.json"
       - "package-lock.json"
+      - ".github/workflows/scripts/**"
       - ".github/workflows/pr-tests.yml"
   push:
     branches:
@@ -22,18 +23,81 @@ on:
       - "tests/**"
       - "package.json"
       - "package-lock.json"
+      - ".github/workflows/scripts/**"
       - ".github/workflows/pr-tests.yml"
 
 jobs:
   tests:
     runs-on: ubuntu-22.04
+    permissions:
+      contents: read
 
     steps:
       - uses: actions/checkout@v6
       - uses: actions/setup-node@v6
         with:
           node-version: 22
       - run: npm ci
-      - run: npm test
+      - run: npm run test:coverage
       - run: npm run lint
-      - run: npm run build
+      - run: npm run build
+
+  update_coverage_badge:
+    if: github.event_name == 'push' && github.ref == 'refs/heads/master'
+    needs: tests
+    runs-on: ubuntu-22.04
+    permissions:
+      contents: write
+
+    steps:
+      - uses: actions/checkout@v6
+        with:
+          fetch-depth: 0
+      - uses: actions/setup-node@v6
+        with:
+          node-version: 22
+      - run: npm ci
+      - run: npm run test:coverage
+      - run: node .github/workflows/scripts/update-coverage-badge.mjs
+      - name: Commit coverage badge
+        run: |
+          branch="${GITHUB_REF#refs/heads/}"
+          max_retries=3
+
+          if git diff --quiet -- badges/coverage.json; then
+            echo "Coverage badge unchanged"
+            exit 0
+          fi
+
+          git config user.name "github-actions[bot]"
+          git config user.email "41898282+github-actions[bot]@users.noreply.github.com"
+          git add badges/coverage.json
+          git commit -m "Update coverage badge [skip ci]"
+
+          for attempt in $(seq 1 "${max_retries}"); do
+            echo "Attempt ${attempt}/${max_retries}: pushing coverage badge update to ${branch}"
+
+            if git push origin "HEAD:${branch}"; then
+              echo "Coverage badge push succeeded"
+              exit 0
+            fi
+
+            if [ "${attempt}" -eq "${max_retries}" ]; then
+              echo "::warning::Failed to push coverage badge after ${max_retries} attempts due to concurrent updates. Skipping without failing CI."
+              exit 0
+            fi
+
+            echo "Push rejected. Fetching latest origin/${branch} and retrying with rebase..."
+            if ! git fetch origin "${branch}"; then
+              echo "::warning::Failed to fetch origin/${branch} while retrying coverage badge push. Skipping without failing CI."
+              exit 0
+            fi
+
+            if ! git rebase "origin/${branch}"; then
+              git rebase --abort || true
+              echo "::warning::Rebase conflict while retrying coverage badge push. Skipping without failing CI."
+              exit 0
+            fi
+
+            sleep $((attempt * 2))
+          done

.github/workflows/scripts/update-coverage-badge.mjs

@@ -0,0 +1,41 @@
+import fs from 'node:fs'
+import path from 'node:path'
+
+const coverageSummaryPath = 'coverage/coverage-summary.json'
+const badgePath = 'badges/coverage.json'
+
+function getBadgeColor(percentage) {
+  if (percentage >= 90) return 'brightgreen'
+  if (percentage >= 80) return 'green'
+  if (percentage >= 70) return 'yellowgreen'
+  if (percentage >= 60) return 'yellow'
+  if (percentage >= 50) return 'orange'
+  return 'red'
+}
+
+function main() {
+  if (!fs.existsSync(coverageSummaryPath)) {
+    throw new Error(`Coverage summary file not found: ${coverageSummaryPath}`)
+  }
+
+  const summary = JSON.parse(fs.readFileSync(coverageSummaryPath, 'utf8'))
+  const linesPercentage = Number(summary?.total?.lines?.pct)
+
+  if (!Number.isFinite(linesPercentage)) {
+    throw new Error('Unable to read lines coverage percentage from coverage summary')
+  }
+
+  const roundedPercentage = Number(linesPercentage.toFixed(2))
+  const badge = {
+    schemaVersion: 1,
+    label: 'coverage',
+    message: `${roundedPercentage}%`,
+    color: getBadgeColor(roundedPercentage),
+  }
+
+  fs.mkdirSync(path.dirname(badgePath), { recursive: true })
+  fs.writeFileSync(badgePath, JSON.stringify(badge, null, 2) + '\n')
+  console.log(`Updated ${badgePath} with lines coverage ${roundedPercentage}%`)
+}
+
+main()

.gitignore

@@ -2,5 +2,7 @@
 .vscode/
 node_modules/
 build/
+.coverage/
+coverage/
 .DS_Store
 *.zip

README.md

@@ -12,6 +12,7 @@ Deep ChatGPT integrations in your browser, completely for free.
 [![release][release-image]][release-url]
 [![size](https://img.shields.io/badge/minified%20size-390%20kB-blue)][release-url]
 [![verfiy][verify-image]][verify-url]
+[![coverage][coverage-image]][coverage-url]
 
 English   |   [Indonesia](README_IN.md)   |   [简体中文](README_ZH.md)   |   [日本語](README_JA.md)   |   [Türkçe](README_TR.md)
 
@@ -40,6 +41,10 @@ English   |   [Indonesia](README_IN.md)   | &
 
 [verify-url]: https://github.com/ChatGPTBox-dev/chatGPTBox/actions/workflows/verify-configs.yml
 
+[coverage-image]: https://img.shields.io/endpoint?url=https://raw.githubusercontent.com/ChatGPTBox-dev/chatGPTBox/master/badges/coverage.json
+
+[coverage-url]: https://github.com/ChatGPTBox-dev/chatGPTBox/actions/workflows/pr-tests.yml
+
 [Chrome-image]: https://img.shields.io/badge/-Chrome-brightgreen?logo=google-chrome&logoColor=white
 
 [Chrome-url]: https://chrome.google.com/webstore/detail/chatgptbox/eobbhoofkanlmddnplfhnmkfbnlhpbbo

badges/coverage.json

@@ -0,0 +1,6 @@
+{
+  "schemaVersion": 1,
+  "label": "coverage",
+  "message": "10.14%",
+  "color": "red"
+}