diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index f091ee71..7fb371be 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -263,6 +263,28 @@ jobs:
       - name: Quality checks
         run: make ci-quality-github
 
+      # Shared with the other repos' coverage jobs. It lives in its own public
+      # repo because a public repository -- this one -- cannot resolve an action
+      # from a private one. An earlier attempt to consume it from the private
+      # internal-workflows repo failed at `Set up job` on every matrix leg with
+      # "Unable to resolve action, not found", so no tests ran at all.
+      #
+      # Pinned by commit rather than tag: a tag can be repointed at new code,
+      # and pinning means a change to the action cannot reach us until we bump
+      # it deliberately.
+      #
+      # This owns the coverage artifact upload. The test-results upload below
+      # stays separate -- the action uploads one artifact, and these are two.
+      - name: Coverage summary
+        if: always()
+        uses: runpod/coverage-summary-action@65b35a32ecfd9c2f0dc2352394eca1decfba4915
+        with:
+          format: cobertura
+          coverage-file: coverage.xml
+          results: pytest-results-*.xml
+          artifact-name: coverage-${{ matrix.python-version }}
+          if-no-files-found: warn
+
       - name: Upload test results
         uses: actions/upload-artifact@v4
         if: always()
diff --git a/Makefile b/Makefile
index c764d4d4..5907bd54 100644
--- a/Makefile
+++ b/Makefile
@@ -71,9 +71,11 @@ test-integration: # Run integration tests in parallel (auto-detect cores)
 test-integration-serial: # Run integration tests serially (for debugging)
 	uv run pytest tests/integration/ -v -m integration
 
+# The serial pass re-emits the XML after appending, or coverage.xml is left
+# holding only the parallel run and undercounts.
 test-coverage: # Run tests with coverage report (parallel non-serial, then serial pass for state isolation)
 	uv run pytest tests/ -v -n auto -m "not serial" --cov=runpod_flash --cov-report=xml
-	uv run pytest tests/ -v -m "serial" --cov=runpod_flash --cov-append --cov-report=term-missing
+	uv run pytest tests/ -v -m "serial" --cov=runpod_flash --cov-append --cov-report=term-missing --cov-report=xml
 
 test-coverage-serial: # Run tests with coverage report (serial execution)
 	uv run pytest tests/ -v --cov=runpod_flash --cov-report=term-missing
@@ -116,6 +118,20 @@ quality-check-strict: format-check lint typecheck test-coverage # Strict quality
 quality-check-serial: ci-quality-github-serial # Serial quality gate for debugging
 
 # GitHub Actions specific target -- canonical CI quality gate.
+# The serial pass re-emits the XML after appending, or coverage.xml is left
+# holding only the parallel run and undercounts.
+#
+# The serial pass, not the parallel one, is the real coverage gate: the
+# parallel invocation passes --cov-fail-under=0 to suppress the partial
+# number, while the serial one inherits --cov-fail-under=65 from pyproject
+# addopts. Do not "align" the two flags -- that quietly disables the gate.
+#
+# make stops at the first failing recipe line, so if the parallel pass fails
+# the re-emit never runs and coverage.xml holds the parallel subset. That is
+# deliberate: guarding the parallel line with `-`/`|| true` so the serial pass
+# always ran would let a red parallel suite exit 0. The weekly report only
+# reads runs whose status is success, so an undercount on an already-failing
+# run is not consumed by anything.
 ci-quality-github: # Quality checks with GitHub Actions formatting (parallel by default)
 	@echo "::group::Code formatting check"
 	uv run ruff format --check .
@@ -127,7 +143,7 @@ ci-quality-github: # Quality checks with GitHub Actions formatting (parallel by
 	uv run pytest tests/ --junitxml=pytest-results-parallel.xml -v -n auto -m "not serial" --cov=runpod_flash --cov-report=xml --cov-fail-under=0
 	@echo "::endgroup::"
 	@echo "::group::Test suite with coverage (serial pass)"
-	uv run pytest tests/ --junitxml=pytest-results-serial.xml -v -m "serial" --cov=runpod_flash --cov-append --cov-report=term-missing
+	uv run pytest tests/ --junitxml=pytest-results-serial.xml -v -m "serial" --cov=runpod_flash --cov-append --cov-report=term-missing --cov-report=xml
 	@echo "::endgroup::"
 
 ci-quality-github-serial: # Serial quality checks for GitHub Actions (for debugging)
diff --git a/pyproject.toml b/pyproject.toml
index 30eac1bd..ff5743c4 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -119,7 +119,7 @@ ignore_missing_imports = true
 
 [tool.coverage.run]
 parallel = true
-branch = false
+branch = true
 source = ["runpod_flash"]
 omit = ["*/tests/*", "*/test_*.py", "*/__pycache__/*", "*/site-packages/*"]