[FSSDK-12539] Remove Coveralls from CI checks (#462)

* [FSSDK-12539] Remove Coveralls from CI checks

Remove Coveralls coverage upload and README badge. Tests still run
via make cover but no longer report to Coveralls.

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

* [FSSDK-12539] Restore tests_coveralls job name for branch protection

Keep the job name so required check still passes, but remove the
goveralls upload step.

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

* Rename tests_coveralls job to unit_test_coverage

Addresses reviewer feedback — Coveralls is removed, so the job name
should reflect that. Aligns with go-sdk naming convention.

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

* Trigger CI checks

---------

Co-authored-by: Claude Opus 4.6 <noreply@anthropic.com>

Author: Mat001

.github/workflows/agent.yml

@@ -59,10 +59,8 @@ jobs:
         ignore: "DL3018"
         dockerfile: scripts/dockerfiles/Dockerfile.*
 
-  tests_coveralls:
+  unit_test_coverage:
     runs-on: ubuntu-latest
-    env:
-      COVERALLS_TOKEN: ${{ secrets.GITHUB_TOKEN }}
     steps:
     - uses: actions/checkout@v3
       with:
@@ -75,16 +73,10 @@ jobs:
       uses: supercharge/redis-github-action@1.5.0
       with:
         redis-version: 5
-    - name: coveralls
-      id: coveralls
+    - name: test
       run: |
         make -e setup build
         make -e cover COVER_FILE=coverage.txt
-    - name: success
-      if: steps.coveralls.outcome == 'success'
-      run: |
-        go install github.com/mattn/goveralls@latest
-        goveralls -coverprofile=coverage.txt -service=github
 
   tests_windows_build_ps1:
     runs-on: windows-2022

README.md

@@ -1,5 +1,4 @@
 [![Build Status](https://github.com/optimizely/agent/actions/workflows/agent.yml/badge.svg?branch=master)](https://github.com/optimizely/agent/actions/workflows/agent.yml?query=branch%3Amaster)
-[![Coverage Status](https://coveralls.io/repos/github/optimizely/agent/badge.svg)](https://coveralls.io/github/optimizely/agent)
 
 # Optimizely Agent