fmt

frontend/src/lib/url-state.test.ts

@@ -203,16 +203,7 @@ describe('url-state', () => {
   });
 
   it('round-trips an explicit "all overlays off" via the __none sentinel', () => {
-    const params = stateToParams(
-      null,
-      {},
-      [],
-      new Set(),
-      'area',
-      undefined,
-      undefined,
-      new Set()
-    );
+    const params = stateToParams(null, {}, [], new Set(), 'area', undefined, undefined, new Set());
 
     expect(params.getAll('overlay')).toEqual(['__none']);
 

pyproject.toml

@@ -38,6 +38,18 @@ dev = [
     "ruff>=0.8.0",
 ]
 
+[tool.pytest.ini_options]
+filterwarnings = [
+    # The pipeline deliberately forks worker pools (fuzzy_join's
+    # ProcessPoolExecutor, postcode_boundaries' fork context) for copy-on-write
+    # sharing of large arrays; the fork-after-threads deadlock hazard is
+    # mitigated by never calling threaded libraries (polars/rayon) in the
+    # workers. Python 3.12's blanket fork-with-threads DeprecationWarning is a
+    # false positive here, surfacing only as cross-test noise when a background
+    # thread happens to be alive at fork time.
+    "ignore:This process .* is multi-threaded, use of fork:DeprecationWarning",
+]
+
 [tool.deptry]
 # analyses/ and scripts/ use transitive deps; finder/ and video/tts have their own UV projects.
 extend_exclude = [".*/\\.venv", "analyses", "scripts", "finder", "video/tts"]