fix: write step summary directly from action.ps1

Always call Build-SummaryReport and write to $GITHUB_STEP_SUMMARY via
Add-Content rather than relying on the workflow to echo the coverageSummary
output.  The echo approach mangles multiline markdown (backticks, dollar
signs, quotes), causing the step summary to appear empty.

Remove the now-redundant 'Add Coverage Job Summary' / 'Publish Coverage
Workflow Build Summary' steps from all three example workflows to avoid
duplicating the content.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

Author: PavanMudigondaTR

.github/workflows/coverage.yml

@@ -69,5 +69,3 @@ jobs:
         echo "coverage_percentage      : ${{ steps.jacoco_reporter.outputs.coverage_percentage }}"
         echo "coveragePercentageString : ${{ steps.jacoco_reporter.outputs.coveragePercentageString }}"
 
-    - name: Publish Coverage Workflow Build Summary
-      run: echo "${{ steps.jacoco_reporter.outputs.coverageSummary }}" >> $GITHUB_STEP_SUMMARY

.github/workflows/one.yml

@@ -58,9 +58,6 @@ jobs:
         fail_below_threshold: false
         publish_only_summary: true
 
-    - name: Add Coverage Job Summary
-      run: echo "${{ steps.jacoco_reporter.outputs.coverageSummary }}" >> $GITHUB_STEP_SUMMARY
-
     - name: Upload Code Coverage Artifacts
       uses: actions/upload-artifact@v4
       with:

.github/workflows/two.yml

@@ -51,9 +51,6 @@ jobs:
         fail_below_threshold: false
         publish_only_summary: false
 
-    - name: Add Coverage Job Summary
-      run: echo "${{ steps.jacoco_reporter.outputs.coverageSummary }}" >> $GITHUB_STEP_SUMMARY
-
     - name: Get the Coverage info
       run: |
         echo "Total coverage coverage-overall ${{ steps.jacoco.outputs.coverage-overall }}"

action.ps1

@@ -124,6 +124,12 @@ function Build-SummaryReport {
     [System.IO.File]::WriteAllText($script:coverage_summary_path, $combined.ToString())
 }
 
+function Write-StepSummary([string]$content) {
+    if ($env:GITHUB_STEP_SUMMARY -and $content) {
+        Add-Content -Path $env:GITHUB_STEP_SUMMARY -Value $content
+    }
+}
+
 ## ── Coverage Analysis ─────────────────────────────────────────────────────────
 
 function Parse-CoverageXML {
@@ -319,9 +325,11 @@ if ($publishOnlySummary) {
 } else {
     Build-CoverageReport
 }
-if ($skipCheckRun) {
-    Build-SummaryReport
-}
+# Always build the compact job-summary format and write it directly to
+# $GITHUB_STEP_SUMMARY.  This is more reliable than relying on the workflow
+# to echo the coverageSummary output (echo mangles multiline markdown).
+Build-SummaryReport
+Write-StepSummary -content ([System.IO.File]::ReadAllText($script:coverage_summary_path))
 
 # Step 2 ── Parse coverage data and compute metrics
 Parse-CoverageXML