style: apply ruff format across the repository

ruff format was never run repo-wide; CI now enforces 'ruff format --check', so normalize every module once. No behavior changes.

Co-authored-by: Cursor <cursoragent@cursor.com>

tests/test_drawing_settings.py

@@ -33,9 +33,13 @@ async def test_set_units_cm_and_inch_codes(backend):
 
 
 async def test_set_numeric_settings(backend):
-    res = await backend.drawing_settings({
-        "dimscale": 2.0, "linear_precision": 3, "ltscale": 0.5,
-    })
+    res = await backend.drawing_settings(
+        {
+            "dimscale": 2.0,
+            "linear_precision": 3,
+            "ltscale": 0.5,
+        }
+    )
     assert res["ok"] is True
     snap = (await backend.drawing_settings())["settings"]
     assert snap["dimscale"] == 2.0
@@ -57,6 +61,7 @@ async def test_bad_unit_value_is_reported(backend):
 
 # ── server tool wiring ──────────────────────────────────────────────────────
 
+
 class _FakeCtx:
     def __init__(self, backend):
         self.lifespan_context = {"backend": backend}