diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index dc8fd9a..e843ec6 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -52,4 +52,10 @@ jobs:
       - name: Test
         # Network I/O is isolated in the *_utils modules and mocked there, so
         # the suite needs neither a live network nor any external binary.
-        run: pytest --tb=short -q
+        #
+        # --cov-fail-under lives here rather than in pyproject addopts: in
+        # addopts it also applies to targeted runs such as
+        # `pytest tests/test_x.py::TestY -v`, which measure the whole package
+        # while executing one class and so fail the gate at ~3% coverage even
+        # when every selected test passes.
+        run: pytest --tb=short -q --cov-fail-under=100
diff --git a/CLAUDE.md b/CLAUDE.md
index 60f1962..8af74aa 100644
--- a/CLAUDE.md
+++ b/CLAUDE.md
@@ -70,7 +70,8 @@ Two mock targets in tests:
 - **CLI mocking**: patch `"quantumvalidator.assessor.assess"` and `"quantumvalidator.reporter.print_full_report"` (both are lazy imports inside `check()`)
 - **Reporter tests**: use `Console(file=StringIO(), no_color=True, width=200)` to capture output; pass `console=con` as a keyword argument — all reporter functions (public and private) accept `console=`
 - **Test class naming**: `class TestFeatureName:`, snake_case methods, AAA structure
-- **Coverage target**: 100% — enforced via `pyproject.toml` addopts
+- **Coverage target**: 100% — enforced by CI (`--cov-fail-under=100` on the
+  workflow's pytest step, not in `addopts`, so targeted runs are not gated)
 
 ## Exit Codes
 
diff --git a/pyproject.toml b/pyproject.toml
index 49b36c4..50410b0 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -74,4 +74,4 @@ select = ["E4", "E7", "E9", "F"]
 [tool.pytest.ini_options]
 pythonpath = ["."]
 testpaths = ["tests"]
-addopts = "--cov=quantumvalidator --cov-report=term-missing --cov-fail-under=100"
+addopts = "--cov=quantumvalidator --cov-report=term-missing"