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>

backends/__init__.py

@@ -1,4 +1,5 @@
 """AutoCAD MCP Pro – backend package."""
+
 from .base import AutoCADBackend, BlockInfo, DrawingInfo, EntityInfo, LayerInfo
 from .com_backend import ComBackend
 from .ezdxf_backend import EzdxfBackend

benchmarks/adapters/autocad_mcp_pro.py

@@ -90,10 +90,11 @@ class AutoCADMCPProAdapter(BenchmarkAdapter):
         table = await self.backend.entity_create_table(
             0, 20, [["A", "1"]], headers=["ITEM", "QTY"], layer="TEXT"
         )
-        leader = await self.backend.leader_create_mleader(
+        leader = await self.backend.leader_create_mleader([[0, 0], [10, 10]], "NOTE", layer="DIM")
-            [[0, 0], [10, 10]], "NOTE", layer="DIM"
+        representations = [
-        )
+            table.properties.get("representation"),
-        representations = [table.properties.get("representation"), leader.properties.get("representation")]
+            leader.properties.get("representation"),
+        ]
         return all(representations), {"representations": representations}, []
 
     async def _task_transactions(self):

benchmarks/compare_versions.py

@@ -11,6 +11,7 @@ recorded as a miss instead of taking down the whole run.
 The older ref is checked out into a throwaway git worktree, benchmarked, and
 removed. The "new" side is always the current repository checkout.
 """
+
 from __future__ import annotations
 
 import json
@@ -27,8 +28,7 @@ PY = sys.executable
 
 def _run(cmd, cwd, repo_on_path):
     env = {**os.environ, "PYTHONPATH": repo_on_path}
-    return subprocess.run(cmd, cwd=cwd, env=env, capture_output=True,
+    return subprocess.run(cmd, cwd=cwd, env=env, capture_output=True, text=True, timeout=120)
-                          text=True, timeout=120)
 
 
 def list_checks():
@@ -43,9 +43,14 @@ def list_checks():
 
 def run_one(repo, suite, name):
     try:
-        r = subprocess.run([PY, suite, name], cwd=repo,
+        r = subprocess.run(
+            [PY, suite, name],
+            cwd=repo,
             env={**os.environ, "PYTHONPATH": repo},
-                           capture_output=True, text=True, timeout=120)
+            capture_output=True,
+            text=True,
+            timeout=120,
+        )
     except subprocess.TimeoutExpired:
         return "timeout"
     last = (r.stdout.strip().splitlines() or [""])[-1].strip()
@@ -82,22 +87,30 @@ def main():
     op = sum(r["old"] == "pass" for r in rows)
     npass = sum(r["new"] == "pass" for r in rows)
     summary = {
-        "baseline_ref": ref, "total": total,
+        "baseline_ref": ref,
-        "old_pass": op, "new_pass": npass,
+        "total": total,
-        "old_pct": round(100 * op / total, 1), "new_pct": round(100 * npass / total, 1),
+        "old_pass": op,
+        "new_pass": npass,
+        "old_pct": round(100 * op / total, 1),
+        "new_pct": round(100 * npass / total, 1),
         "fixed": sum(r["old"] != "pass" and r["new"] == "pass" for r in rows),
         "regressed": sum(r["old"] == "pass" and r["new"] != "pass" for r in rows),
     }
     print(f"{'CHECK':<32} {'CATEGORY':<13} {'baseline':<8} {'current':<8}")
     print("-" * 66)
     for r in rows:
-        mark = " ->FIXED" if (r["old"] != "pass" and r["new"] == "pass") else (
+        mark = (
-            " !!REGRESS" if (r["old"] == "pass" and r["new"] != "pass") else "")
+            " ->FIXED"
+            if (r["old"] != "pass" and r["new"] == "pass")
+            else (" !!REGRESS" if (r["old"] == "pass" and r["new"] != "pass") else "")
+        )
         print(f"{r['check']:<32} {r['category']:<13} {r['old']:<8} {r['new']:<8}{mark}")
     print("-" * 66)
-    print(f"baseline {ref}: {op}/{total} ({summary['old_pct']}%)   "
+    print(
+        f"baseline {ref}: {op}/{total} ({summary['old_pct']}%)   "
         f"current: {npass}/{total} ({summary['new_pct']}%)   "
-          f"fixed: {summary['fixed']}  regressed: {summary['regressed']}")
+        f"fixed: {summary['fixed']}  regressed: {summary['regressed']}"
+    )
     if json_out:
         with open(json_out, "w") as fh:
             json.dump({"summary": summary, "rows": rows}, fh, indent=2)

benchmarks/correctness_suite.py

@@ -12,6 +12,7 @@ The same file is executed against both the baseline worktree and the current
 checkout (PYTHONPATH + cwd point at each repo), so a check that exercises a
 method the old version lacks simply raises AttributeError -> miss.
 """
+
 from __future__ import annotations
 
 import asyncio
@@ -23,6 +24,7 @@ import tempfile
 
 async def _b():
     from backends.ezdxf_backend import EzdxfBackend
+
     be = EzdxfBackend()
     await be.connect()
     await be.drawing_new()
@@ -31,53 +33,62 @@ async def _b():
 
 # ── Core capability (expected to pass on BOTH versions — sanity / not rigged) ──
 
+
 async def core_line_length():
     b = await _b()
     ln = await b.entity_create_line(0, 0, 3, 4)
     info = await b.entity_get(ln.handle)
     return abs(float(info.properties["length"]) - 5.0) < 1e-6
 
+
 async def core_circle_radius():
     b = await _b()
     c = await b.entity_create_circle(0, 0, 10)
     info = await b.entity_get(c.handle)
     return abs(float(info.properties["radius"]) - 10.0) < 1e-6
 
+
 async def core_layer_create():
     b = await _b()
     await b.layer_create("BENCH", color=1)
     names = {lyr.name for lyr in await b.layer_list()}
     return "BENCH" in names
 
+
 async def core_polyline_closed():
     b = await _b()
     p = await b.entity_create_polyline([[0, 0], [10, 0], [10, 10]], closed=True)
     info = await b.entity_get(p.handle)
     return bool(info.properties.get("closed"))
 
+
 async def core_linear_dim():
     b = await _b()
     d = await b.dimension_linear(0, 0, 100, 0, 50, 20)
     info = await b.entity_get(d.handle)
     return "DIM" in info.type.upper()
 
+
 async def core_save_dxf_roundtrip():
     b = await _b()
     await b.entity_create_line(0, 0, 10, 10)
     path = os.path.join(tempfile.mkdtemp(), "rt.dxf")
     await b.drawing_save_as(path, "dxf")
     import ezdxf
+
     ezdxf.readfile(path)  # raises if not a valid DXF
     return os.path.getsize(path) > 0
 
 
 # ── Dimensions (I16) ──────────────────────────────────────────────────────────
 
+
 async def dim_aligned_no_error():
     b = await _b()
     d = await b.dimension_aligned(0, 0, 50, 50, 30, 70)
     return d is not None
 
+
 async def dim_angular_no_error():
     b = await _b()
     d = await b.dimension_angular(0, 0, 100, 0, 0, 100, 60, 60)
@@ -86,6 +97,7 @@ async def dim_angular_no_error():
 
 # ── Polar array full circle (R9) ──────────────────────────────────────────────
 
+
 async def array_polar_360_distinct():
     b = await _b()
     c = await b.entity_create_circle(10, 0, 1)
@@ -101,6 +113,7 @@ async def array_polar_360_distinct():
 
 # ── Deterministic geometry (I9) ────────────────────────────────────────────────
 
+
 async def point_intersection_line_line():
     b = await _b()
     l1 = await b.entity_create_line(0, 0, 10, 0)
@@ -108,6 +121,7 @@ async def point_intersection_line_line():
     pt = await b.point_intersection(l1.handle, l2.handle)
     return abs(pt[0] - 5.0) < 1e-6 and abs(pt[1] - 0.0) < 1e-6
 
+
 async def point_tangent_external():
     b = await _b()
     c = await b.entity_create_circle(0, 0, 3)
@@ -120,18 +134,21 @@ async def point_tangent_external():
 
 # ── Selection / property parity (N3, N5) ───────────────────────────────────────
 
+
 async def arc_has_length():
     b = await _b()
     a = await b.entity_create_arc(0, 0, 10, 0, 90)
     info = await b.entity_get(a.handle)
     return abs(float(info.properties["length"]) - (10 * math.pi / 2)) < 1e-3
 
+
 async def arc_select_by_length():
     b = await _b()
     await b.entity_create_arc(0, 0, 10, 0, 90)  # length ~15.7
     sel = await b.entity_select_smart({"type": "ARC", "length_range": [15, 16]})
     return len(sel) == 1
 
+
 async def ezdxf_bounding_box():
     b = await _b()
     ln = await b.entity_create_line(0, 0, 30, 40)
@@ -139,6 +156,7 @@ async def ezdxf_bounding_box():
     bb = info.properties.get("bounding_box")
     return isinstance(bb, dict) and set(bb) == {"min", "max"}
 
+
 async def mtext_rotation_roundtrip():
     b = await _b()
     mt = await b.entity_create_mtext("r", 0, 0, width=50, height=2.5, rotation=30.0)
@@ -148,6 +166,7 @@ async def mtext_rotation_roundtrip():
 
 # ── Rendering (screenshot Agg / SIGSEGV) ───────────────────────────────────────
 
+
 async def screenshot_png():
     b = await _b()
     await b.entity_create_line(0, 0, 100, 100)
@@ -157,6 +176,7 @@ async def screenshot_png():
 
 # ── Quality gate / critique (R4, N4) ───────────────────────────────────────────
 
+
 async def dim_overlap_critique_fires():
     b = await _b()
     await b.drawing_apply_iso_layers("mech")
@@ -165,6 +185,7 @@ async def dim_overlap_critique_fires():
     issues = await b.drawing_critique(focus=["dim_overlap"])
     return len(issues) >= 1
 
+
 async def iso13567_dim_layer():
     b = await _b()
     await b.drawing_apply_iso_layers("iso13567")
@@ -172,6 +193,7 @@ async def iso13567_dim_layer():
     dims = await b.dimension_auto([ln.handle], style="chain")
     return dims[0].layer == "M-DIMEN-T-N"
 
+
 async def construction_left_iso_caught():
     b = await _b()
     await b.drawing_apply_iso_layers("iso13567")
@@ -182,8 +204,10 @@ async def construction_left_iso_caught():
 
 # ── Engineering (gear) ──────────────────────────────────────────────────────────
 
+
 async def gear_no_self_overlap():
     from engineering.gear import generate_full_gear_outline
+
     pts = generate_full_gear_outline(2, 50, 20.0)  # z=50 -> root_r >= base_r
     root_r = (2 * 50 / 2.0) - 1.25 * 2
     return min(math.hypot(x, y) for x, y in pts) >= root_r - 1e-6
@@ -191,6 +215,7 @@ async def gear_no_self_overlap():
 
 # ── Linetype on demand (R24) ───────────────────────────────────────────────────
 
+
 async def center_linetype_applied():
     b = await _b()
     ln = await b.entity_create_line(0, 0, 50, 0, linetype="CENTER")

engineering/critique.py

@@ -29,8 +29,13 @@ _EXPECTED_LAYER_COLOR: dict[str, int] = {
 
 # Dimension entity types that should sit on the DIM layer.
 _DIM_TYPES = {
-    "DIMENSION", "DIMLINEAR", "DIMALIGNED", "DIMANGULAR",
+    "DIMENSION",
-    "DIMRADIUS", "DIMDIAMETER", "DIMORDINATE",
+    "DIMLINEAR",
+    "DIMALIGNED",
+    "DIMANGULAR",
+    "DIMRADIUS",
+    "DIMDIAMETER",
+    "DIMORDINATE",
 }
 
 
@@ -57,7 +62,8 @@ async def _check_iso128(backend: AutoCADBackend) -> list[Issue]:
         # (e.g. 25 == 0.25mm) — they are NOT pre-normalised to mm, so accept
         # either the raw mm value or hundredths/100.
         if lw not in allowed and (lw / 100.0) not in allowed:
-            issues.append(Issue(
+            issues.append(
+                Issue(
                     severity="warning",
                     focus="iso128",
                     message=(
@@ -65,7 +71,8 @@ async def _check_iso128(backend: AutoCADBackend) -> list[Issue]:
                         f"ISO 128 set {sorted(allowed)}."
                     ),
                     detail={"layer": lyr.name, "lineweight": lw},
-            ))
+                )
+            )
     return issues
 
 
@@ -81,7 +88,8 @@ async def _check_layer_color(backend: AutoCADBackend) -> list[Issue]:
         if expected is None:
             continue  # unknown layer — caller's responsibility
         if int(lyr.color) != int(expected):
-            issues.append(Issue(
+            issues.append(
+                Issue(
                     severity="warning",
                     focus="layer_color",
                     message=(
@@ -89,7 +97,8 @@ async def _check_layer_color(backend: AutoCADBackend) -> list[Issue]:
                         f"engineering standard expects {expected}."
                     ),
                     detail={"layer": lyr.name, "got": int(lyr.color), "expected": expected},
-            ))
+                )
+            )
     return issues
 
 
@@ -107,7 +116,8 @@ async def _check_construction_left(backend: AutoCADBackend) -> list[Issue]:
     leftover = [e for e in ents if "CONST" in (e.layer or "").upper()]
     if not leftover:
         return []
-    return [Issue(
+    return [
+        Issue(
             severity="error",
             focus="construction_left",
             message=(
@@ -115,9 +125,12 @@ async def _check_construction_left(backend: AutoCADBackend) -> list[Issue]:
                 "Call construction_clear() before drawing_finalize."
             ),
             handles=[e.handle for e in leftover[:50]],
-        detail={"count": len(leftover),
+            detail={
-                "layers": sorted({e.layer for e in leftover if e.layer})},
+                "count": len(leftover),
-    )]
+                "layers": sorted({e.layer for e in leftover if e.layer}),
+            },
+        )
+    ]
 
 
 async def _check_untrimmed_corner(backend: AutoCADBackend) -> list[Issue]:
@@ -150,7 +163,8 @@ async def _check_untrimmed_corner(backend: AutoCADBackend) -> list[Issue]:
                 if key in seen:
                     continue
                 seen.add(key)
-                issues.append(Issue(
+                issues.append(
+                    Issue(
                         severity="warning",
                         focus="untrimmed_corner",
                         message=(
@@ -159,7 +173,8 @@ async def _check_untrimmed_corner(backend: AutoCADBackend) -> list[Issue]:
                         ),
                         handles=[h1, h2],
                         detail={"gap_mm": d, "p1": list(p1), "p2": list(p2)},
-                ))
+                    )
+                )
     return issues
 
 
@@ -180,12 +195,14 @@ async def _check_duplicate_entities(backend: AutoCADBackend) -> list[Issue]:
         k2 = (k1[2], k1[3], k1[0], k1[1])
         for key in (k1, k2):
             if key in seen:
-                issues.append(Issue(
+                issues.append(
+                    Issue(
                         severity="warning",
                         focus="duplicate_entities",
                         message=f"Lines {seen[key]} and {ln.handle} are duplicates.",
                         handles=[seen[key], ln.handle],
-                ))
+                    )
+                )
                 break
         else:
             seen[k1] = ln.handle
@@ -243,12 +260,14 @@ async def _check_dim_overlap(backend: AutoCADBackend) -> list[Issue]:
                 if key in seen:
                     continue
                 seen.add(key)
-                issues.append(Issue(
+                issues.append(
+                    Issue(
                         severity="warning",
                         focus="dim_overlap",
                         message=f"Dimensions {h1} and {h2} are {d:.2f} mm apart — likely overlapping.",
                         handles=[h1, h2],
-                ))
+                    )
+                )
     return issues
 
 
@@ -267,7 +286,8 @@ async def _check_gdt(backend: AutoCADBackend) -> list[Issue]:
     missing = sorted(referenced - defined)
     if not missing:
         return []
-    return [Issue(
+    return [
+        Issue(
             severity="error",
             focus="gdt",
             message=(
@@ -279,7 +299,8 @@ async def _check_gdt(backend: AutoCADBackend) -> list[Issue]:
                 "defined": sorted(defined),
                 "referenced": sorted(referenced),
             },
-    )]
+        )
+    ]
 
 
 _FOCUS_DISPATCH = {
@@ -303,11 +324,13 @@ async def run_critique(
     for f in foci:
         check = _FOCUS_DISPATCH.get(f)
         if check is None:
-            issues.append(Issue(
+            issues.append(
+                Issue(
                     severity="warning",
                     focus=f,  # type: ignore[arg-type]
                     message=f"Unknown critique focus '{f}' (closed enum).",
-            ))
+                )
+            )
             continue
         issues.extend(await check(backend))
     return issues

engineering/delivery.py

@@ -163,7 +163,9 @@ async def deliver_drawing(
     expected: dict | None = None,
 ) -> DeliveryResult:
     """Export, validate, hash and re-open a release-ready drawing bundle."""
-    requested = list(dict.fromkeys(item.lower().strip() for item in (formats or ["dxf", "pdf", "png"])))
+    requested = list(
+        dict.fromkeys(item.lower().strip() for item in (formats or ["dxf", "pdf", "png"]))
+    )
     unknown = [item for item in requested if item not in _FORMAT_FILENAMES]
     if unknown:
         raise ValueError(f"Unsupported delivery format(s): {', '.join(unknown)}")
@@ -210,9 +212,7 @@ async def deliver_drawing(
                 artifact_path.write_bytes(png)
             artifacts.append(_artifact_record(fmt, artifact_path, status="created"))
         except Exception as exc:
-            artifacts.append(
+            artifacts.append(_artifact_record(fmt, artifact_path, status="failed", error=str(exc)))
-                _artifact_record(fmt, artifact_path, status="failed", error=str(exc))
-            )
         finally:
             timings[f"export_{fmt}_ms"] = round((time.perf_counter() - export_started) * 1000, 2)
 

engineering/gear.py

@@ -67,16 +67,18 @@ def generate_involute_flank(
     return points
 
 
-def _rotate_points(
+def _rotate_points(pts: list[tuple[float, float]], angle: float) -> list[tuple[float, float]]:
-    pts: list[tuple[float, float]], angle: float
-) -> list[tuple[float, float]]:
     c, s = math.cos(angle), math.sin(angle)
     return [(c * x - s * y, s * x + c * y) for x, y in pts]
 
 
 def _arc_points(
-    cx: float, cy: float, radius: float,
+    cx: float,
-    start_angle: float, end_angle: float, n: int = 5,
+    cy: float,
+    radius: float,
+    start_angle: float,
+    end_angle: float,
+    n: int = 5,
 ) -> list[tuple[float, float]]:
     """Sample n points along an arc (start_angle → end_angle, radians, ccw)."""
     if n < 2:
@@ -232,20 +234,29 @@ async def draw_helical_gear_front_view(
     root_circ = await backend.entity_create_circle(cx, cy, root_r, layer="GEOMETRY")
 
     pts = generate_full_gear_outline(
-        module=module, teeth=teeth, pressure_angle=pressure_angle,
+        module=module,
-        helix_angle=helix_angle, hand=hand, center=(cx, cy),
+        teeth=teeth,
+        pressure_angle=pressure_angle,
+        helix_angle=helix_angle,
+        hand=hand,
+        center=(cx, cy),
     )
     outline = await backend.entity_create_polyline(
         [[float(x), float(y)] for x, y in pts],
-        closed=True, layer="GEOMETRY",
+        closed=True,
+        layer="GEOMETRY",
     )
 
     helix_handles: list[str] | None = None
     helix_label: str | None = None
     if helix_angle and abs(helix_angle) > 1e-9:
         helix_handles, helix_label = await _draw_helix_symbol(
-            backend, cx=cx, cy=cy, outer_r=outer_r,
+            backend,
-            helix_angle=helix_angle, hand=hand,
+            cx=cx,
+            cy=cy,
+            outer_r=outer_r,
+            helix_angle=helix_angle,
+            hand=hand,
         )
 
     bore_handle: str | None = None
@@ -263,7 +274,10 @@ async def draw_helical_gear_front_view(
             keyway_dict = keyed
         else:
             bore_only = await backend.entity_create_circle(
-                cx, cy, bore_diameter / 2.0, layer="GEOMETRY",
+                cx,
+                cy,
+                bore_diameter / 2.0,
+                layer="GEOMETRY",
             )
             bore_handle = bore_only.handle
 
@@ -385,10 +399,18 @@ async def draw_gear_section_aa(
             bore_handles = [keyway_dict["bore_top"], keyway_dict["bore_bottom"]]
         else:
             bore_top = await backend.entity_create_line(
-                x_left, cy + bore_r, x_right, cy + bore_r, layer="GEOMETRY",
+                x_left,
+                cy + bore_r,
+                x_right,
+                cy + bore_r,
+                layer="GEOMETRY",
             )
             bore_bot = await backend.entity_create_line(
-                x_left, cy - bore_r, x_right, cy - bore_r, layer="GEOMETRY",
+                x_left,
+                cy - bore_r,
+                x_right,
+                cy - bore_r,
+                layer="GEOMETRY",
             )
             bore_handles = [bore_top.handle, bore_bot.handle]
 

engineering/keyway.py

@@ -45,7 +45,9 @@ def keyway_dimensions(bore_diameter: float) -> dict:
             f"({DIN6885_TABLE[-1][1]} mm)."
         )
     for b_min, b_max, width, height, t1 in DIN6885_TABLE:
-        if b_min < bore_diameter <= b_max or (bore_diameter == b_min and b_min == DIN6885_TABLE[0][0]):
+        if b_min < bore_diameter <= b_max or (
+            bore_diameter == b_min and b_min == DIN6885_TABLE[0][0]
+        ):
             return {
                 "width": float(width),
                 "height": float(height),
@@ -95,10 +97,18 @@ async def draw_keyed_bore(
 
     overshoot = max(r * 0.2, 5.0)
     horiz = await backend.entity_create_line(
-        cx - r - overshoot, cy, cx + r + overshoot, cy, layer=center_layer,
+        cx - r - overshoot,
+        cy,
+        cx + r + overshoot,
+        cy,
+        layer=center_layer,
     )
     vert = await backend.entity_create_line(
-        cx, cy - r - overshoot, cx, cy + r + depth + overshoot, layer=center_layer,
+        cx,
+        cy - r - overshoot,
+        cx,
+        cy + r + depth + overshoot,
+        layer=center_layer,
     )
 
     return {
@@ -142,23 +152,47 @@ async def draw_keyway_section(
     notch_right = cx + half_kw
 
     bore_top = await backend.entity_create_line(
-        x_left, top_y, x_right, top_y, layer=layer,
+        x_left,
+        top_y,
+        x_right,
+        top_y,
+        layer=layer,
     )
     bore_bottom = await backend.entity_create_line(
-        x_left, bot_y, x_right, bot_y, layer=layer,
+        x_left,
+        bot_y,
+        x_right,
+        bot_y,
+        layer=layer,
     )
 
     notch_bottom = await backend.entity_create_line(
-        notch_left, top_y, notch_right, top_y, layer=layer,
+        notch_left,
+        top_y,
+        notch_right,
+        top_y,
+        layer=layer,
     )
     notch_left_wall = await backend.entity_create_line(
-        notch_left, top_y, notch_left, notch_top_y, layer=layer,
+        notch_left,
+        top_y,
+        notch_left,
+        notch_top_y,
+        layer=layer,
     )
     notch_top = await backend.entity_create_line(
-        notch_left, notch_top_y, notch_right, notch_top_y, layer=layer,
+        notch_left,
+        notch_top_y,
+        notch_right,
+        notch_top_y,
+        layer=layer,
     )
     notch_right_wall = await backend.entity_create_line(
-        notch_right, notch_top_y, notch_right, top_y, layer=layer,
+        notch_right,
+        notch_top_y,
+        notch_right,
+        top_y,
+        layer=layer,
     )
 
     return {

engineering/layers.py

@@ -85,6 +85,7 @@ def resolve_role_layer(layer_set_id: str | None, role: str) -> str:
     roles = LAYER_ROLES.get(layer_set_id or "mech", LAYER_ROLES["mech"])
     return roles.get(role, LAYER_ROLES["mech"][role])
 
+
 STANDARD_LINETYPES: list[str] = ["CENTER", "HIDDEN", "PHANTOM", "DASHED", "DASHDOT"]
 
 
@@ -115,14 +116,14 @@ async def ensure_engineering_layers(backend: AutoCADBackend) -> dict[str, str]:
 
 
 async def apply_layer_set(
-    backend: AutoCADBackend, standard: str = "mech",
+    backend: AutoCADBackend,
+    standard: str = "mech",
 ) -> dict[str, str]:
     """Idempotently apply a named layer set ('mech', 'pid', 'iso13567')."""
     layer_set = LAYER_SET_REGISTRY.get(standard)
     if layer_set is None:
         raise RuntimeError(
-            f"Unknown layer set '{standard}'. "
+            f"Unknown layer set '{standard}'. Choose one of: {sorted(LAYER_SET_REGISTRY)}"
-            f"Choose one of: {sorted(LAYER_SET_REGISTRY)}"
         )
     await ensure_standard_linetypes(backend)
 
@@ -139,7 +140,10 @@ async def apply_layer_set(
             continue
         try:
             await backend.layer_create(
-                name=name, color=color, linetype=linetype, lineweight=lineweight,
+                name=name,
+                color=color,
+                linetype=linetype,
+                lineweight=lineweight,
             )
             results[name] = "created"
         except Exception as exc:

engineering/plan_spec.py

@@ -91,5 +91,13 @@ class Issue:
 
 # ISO 128 lineweight set (mm). Any lineweight outside this set is flagged.
 ISO_128_LINEWEIGHTS_MM: tuple[float, ...] = (
-    0.13, 0.18, 0.25, 0.35, 0.50, 0.70, 1.00, 1.40, 2.00,
+    0.13,
+    0.18,
+    0.25,
+    0.35,
+    0.50,
+    0.70,
+    1.00,
+    1.40,
+    2.00,
 )

engineering/preflight.py

@@ -99,9 +99,7 @@ def preflight_drawing(
         assumptions.append({"field": "units", "value": "mm", "reason": "default"})
     if allow_assumptions and not req.get("tolerance_policy"):
         req["tolerance_policy"] = "general"
-        assumptions.append(
+        assumptions.append({"field": "tolerance_policy", "value": "general", "reason": "default"})
-            {"field": "tolerance_policy", "value": "general", "reason": "default"}
-        )
 
     if isinstance(req.get("units"), str):
         req["units"] = req["units"].lower()

engineering/repairs.py

@@ -64,12 +64,8 @@ async def repair_untrimmed_corner(backend: AutoCADBackend, issue: Issue) -> dict
     midpoint = ((float(p1[0]) + float(p2[0])) / 2, (float(p1[1]) + float(p2[1])) / 2)
     first = await backend.entity_get(issue.handles[0])
     second = await backend.entity_get(issue.handles[1])
-    await backend.entity_edit_geometry(
+    await backend.entity_edit_geometry(issue.handles[0], **_endpoint_kwargs(first, p1, midpoint))
-        issue.handles[0], **_endpoint_kwargs(first, p1, midpoint)
+    await backend.entity_edit_geometry(issue.handles[1], **_endpoint_kwargs(second, p2, midpoint))
-    )
-    await backend.entity_edit_geometry(
-        issue.handles[1], **_endpoint_kwargs(second, p2, midpoint)
-    )
     return {"handles": list(issue.handles), "corner": list(midpoint)}
 
 

engineering/titleblock.py

@@ -72,7 +72,9 @@ async def apply_iso_a3_titleblock(
         [ox, oy + SHEET_H],
     ]
     outer = await backend.entity_create_polyline(
-        points=outer_pts, closed=True, layer=LAYER_BORDER,
+        points=outer_pts,
+        closed=True,
+        layer=LAYER_BORDER,
     )
 
     inner_x0 = ox + LEFT_MARGIN
@@ -86,7 +88,9 @@ async def apply_iso_a3_titleblock(
         [inner_x0, inner_y1],
     ]
     inner = await backend.entity_create_polyline(
-        points=inner_pts, closed=True, layer=LAYER_BORDER,
+        points=inner_pts,
+        closed=True,
+        layer=LAYER_BORDER,
     )
 
     # ---- title block (lower-right corner of inner border) ----------------------
@@ -103,7 +107,9 @@ async def apply_iso_a3_titleblock(
         [tb_x0, tb_y1],
     ]
     tb_frame = await backend.entity_create_polyline(
-        points=tb_frame_pts, closed=True, layer=LAYER_BORDER,
+        points=tb_frame_pts,
+        closed=True,
+        layer=LAYER_BORDER,
     )
 
     # Row baselines (from bottom up): row4_top, row3_top, row2_top
@@ -115,13 +121,21 @@ async def apply_iso_a3_titleblock(
 
     async def hline(y: float) -> str:
         ent = await backend.entity_create_line(
-            tb_x0, y, tb_x1, y, layer=LAYER_BORDER,
+            tb_x0,
+            y,
+            tb_x1,
+            y,
+            layer=LAYER_BORDER,
         )
         return ent.handle
 
     async def vline(x: float, y0: float, y1: float) -> str:
         ent = await backend.entity_create_line(
-            x, y0, x, y1, layer=LAYER_BORDER,
+            x,
+            y0,
+            x,
+            y1,
+            layer=LAYER_BORDER,
         )
         return ent.handle
 
@@ -157,13 +171,21 @@ async def apply_iso_a3_titleblock(
 
     async def label(text: str, x: float, y: float) -> str:
         ent = await backend.entity_create_text(
-            text=text, x=x, y=y, height=LABEL_HEIGHT, layer=LAYER_TEXT,
+            text=text,
+            x=x,
+            y=y,
+            height=LABEL_HEIGHT,
+            layer=LAYER_TEXT,
         )
         return ent.handle
 
     async def value(text: str, x: float, y: float, height: float = VALUE_HEIGHT) -> str:
         ent = await backend.entity_create_text(
-            text=text, x=x, y=y, height=height, layer=LAYER_TEXT,
+            text=text,
+            x=x,
+            y=y,
+            height=height,
+            layer=LAYER_TEXT,
         )
         return ent.handle
 

engineering/validator.py

@@ -12,8 +12,13 @@ if TYPE_CHECKING:
 
 
 REAL_DIMENSION_TYPES = {
-    "DIMENSION", "DIMLINEAR", "DIMALIGNED", "DIMANGULAR",
+    "DIMENSION",
-    "DIMRADIUS", "DIMDIAMETER", "DIMORDINATE",
+    "DIMLINEAR",
+    "DIMALIGNED",
+    "DIMANGULAR",
+    "DIMRADIUS",
+    "DIMDIAMETER",
+    "DIMORDINATE",
 }
 
 # Patterns that suggest a TEXT/MTEXT entity is masquerading as a dimension.
@@ -84,15 +89,15 @@ class DrawingValidator:
         try:
             ents = await backend.entity_list(limit=10000)
             text_likes = [
-                e for e in ents
+                e
+                for e in ents
                 if e.type in ("TEXT", "MTEXT")
-                and DIMENSION_LIKE_TEXT.search(
+                and DIMENSION_LIKE_TEXT.search(getattr(e, "properties", {}).get("text", "") or "")
-                    getattr(e, "properties", {}).get("text", "") or ""
-                )
             ]
             real_dims = [e for e in ents if e.type in REAL_DIMENSION_TYPES]
             if text_likes:
-                findings.append(ValidationFinding(
+                findings.append(
+                    ValidationFinding(
                         "warning",
                         "fake_dimension_text",
                         f"{len(text_likes)} TEXT/MTEXT entities look like dimensions "
@@ -101,23 +106,30 @@ class DrawingValidator:
                             "sample_handles": [t.handle for t in text_likes[:5]],
                             "real_dim_count": len(real_dims),
                         },
-                ))
+                    )
+                )
         except Exception as exc:
-            findings.append(ValidationFinding(
+            findings.append(
-                "warning", "dim_check_failed", str(exc),
+                ValidationFinding(
-            ))
+                    "warning",
+                    "dim_check_failed",
+                    str(exc),
+                )
+            )
 
         # 2 — hidden orphans
         try:
             hidden = [e for e in ents if not e.visible]
             if hidden:
-                findings.append(ValidationFinding(
+                findings.append(
+                    ValidationFinding(
                         "error",
                         "hidden_orphans",
                         f"{len(hidden)} entities have visible=False — hide-fallback "
                         "is forbidden, use entity_delete",
                         {"sample_handles": [h.handle for h in hidden[:5]]},
-                ))
+                    )
+                )
         except Exception:
             pass
 
@@ -126,45 +138,53 @@ class DrawingValidator:
             lts = {x.lower() for x in await backend.linetype_list()}
             missing = [lt for lt in ("center", "hidden", "phantom") if lt not in lts]
             if missing:
-                findings.append(ValidationFinding(
+                findings.append(
+                    ValidationFinding(
                         "error",
                         "linetypes_missing",
                         f"Standard linetypes not loaded: {', '.join(missing).upper()}",
                         {"missing": missing},
-                ))
+                    )
+                )
         except Exception as exc:
-            findings.append(ValidationFinding(
+            findings.append(
-                "warning", "linetype_check_failed", str(exc),
+                ValidationFinding(
-            ))
+                    "warning",
+                    "linetype_check_failed",
+                    str(exc),
+                )
+            )
 
         # 4 — gear views (heuristic, only if expected demands)
         if expected.get("must_have_bore") or expected.get("must_have_keyway"):
-            bore_circles = [
+            bore_circles = [e for e in ents if e.type == "CIRCLE" and e.layer == "GEOMETRY"]
-                e for e in ents
-                if e.type == "CIRCLE" and e.layer == "GEOMETRY"
-            ]
             if expected.get("must_have_bore") and len(bore_circles) < 1:
-                findings.append(ValidationFinding(
+                findings.append(
+                    ValidationFinding(
                         "error",
                         "bore_missing",
                         "Expected bore but no circle on GEOMETRY layer found",
-                ))
+                    )
+                )
             # draw_keyed_bore emits the keyway notch as an OPEN 4-point polyline
             # on GEOMETRY — requiring `closed` here made this a permanent
             # false-negative. Match a small (3-6 point) polyline, open or closed.
             keyway_polys = [
-                e for e in ents
+                e
+                for e in ents
                 if e.type in ("LWPOLYLINE", "POLYLINE")
                 and e.layer == "GEOMETRY"
                 and 3 <= len(e.properties.get("points", [])) <= 6
             ]
             if expected.get("must_have_keyway") and len(keyway_polys) < 1:
-                findings.append(ValidationFinding(
+                findings.append(
+                    ValidationFinding(
                         "warning",
                         "keyway_section_unverified",
                         "Could not confirm keyway via heuristic "
                         "(small 3-6 point polyline on GEOMETRY)",
-                ))
+                    )
+                )
 
         # 5 — title consistency
         helix = expected.get("helix_angle")
@@ -190,19 +210,23 @@ class DrawingValidator:
             has_spur = bool(_SPUR_RE.search(joined))
             has_helical = bool(_HELICAL_RE.search(joined))
             if has_spur and has_helical:
-                findings.append(ValidationFinding(
+                findings.append(
+                    ValidationFinding(
                         "error",
                         "title_helical_spur",
                         "Title contains 'HELICAL SPUR GEAR' — invalid; use "
                         "'HELICAL GEAR' or 'SPUR GEAR'",
-                ))
+                    )
+                )
             elif has_spur:
-                findings.append(ValidationFinding(
+                findings.append(
+                    ValidationFinding(
                         "error",
                         "title_says_spur_for_helical",
                         f"Title contains SPUR but part is helical (helix_angle={helix})",
                         {"sample": joined[:200]},
-                ))
+                    )
+                )
 
         # 6 — saved to disk
         try:
@@ -210,46 +234,62 @@ class DrawingValidator:
             saved_attr = getattr(info, "saved", None)
             full_path = getattr(info, "full_path", "") or ""
             if not saved_attr:
-                findings.append(ValidationFinding(
+                findings.append(
+                    ValidationFinding(
                         "error",
                         "not_saved",
                         "Drawing has unsaved changes — call drawing_save before finalize",
                         {"full_path": full_path},
-                ))
+                    )
+                )
             elif full_path and not Path(full_path).exists():
-                findings.append(ValidationFinding(
+                findings.append(
+                    ValidationFinding(
                         "error",
                         "file_missing",
                         f"Drawing reports saved=True but file not on disk: {full_path}",
-                ))
+                    )
+                )
         except Exception as exc:
-            findings.append(ValidationFinding(
+            findings.append(
-                "warning", "save_check_failed", str(exc),
+                ValidationFinding(
-            ))
+                    "warning",
+                    "save_check_failed",
+                    str(exc),
+                )
+            )
 
         # 7 — screenshot
         try:
             shot = await backend.view_screenshot()
             if not shot:
-                findings.append(ValidationFinding(
+                findings.append(
+                    ValidationFinding(
                         "info",
                         "screenshot_unavailable",
                         "Screenshot returned no bytes (ezdxf needs matplotlib install)",
-                ))
+                    )
+                )
         except Exception as exc:
-            findings.append(ValidationFinding(
+            findings.append(
-                "info", "screenshot_failed", str(exc),
+                ValidationFinding(
-            ))
+                    "info",
+                    "screenshot_failed",
+                    str(exc),
+                )
+            )
 
         # 8 — dwg path returned
         try:
             info = await backend.drawing_info()
             if not getattr(info, "full_path", ""):
-                findings.append(ValidationFinding(
+                findings.append(
+                    ValidationFinding(
                         "warning",
                         "no_path",
                         "drawing_info.full_path is empty",
-                ))
+                    )
+                )
         except Exception:
             pass
 

scripts/smoke_premium.py

@@ -61,10 +61,12 @@ async def _run() -> int:
     print(f"ok (center=({cx},{cy}), r=5)")
 
     print("[6/9] entity_select_smart ...", end=" ")
-    geom = await backend.entity_select_smart({
+    geom = await backend.entity_select_smart(
+        {
             "type": "LINE",
             "layer": "GEOMETRY",
-    })
+        }
+    )
     assert len(geom) >= 2, len(geom)
     print(f"ok ({len(geom)} lines selected)")
 

security.py

@@ -106,32 +106,50 @@ def validate_path(path: str, *, allow_write: bool = False) -> Path:
 # ---------------------------------------------------------------------------
 
 _DANGEROUS_COMMANDS = [
-    "ERASE", "_ERASE",
+    "ERASE",
-    "DELETE", "_DELETE",
+    "_ERASE",
-    "PURGE", "_PURGE",
+    "DELETE",
-    "QUIT", "_QUIT",
+    "_DELETE",
-    "CLOSE", "_CLOSE",
+    "PURGE",
-    "QSAVE", "_QSAVE",
+    "_PURGE",
-    "SAVEAS", "_SAVEAS",
+    "QUIT",
-    "NEW", "_NEW",
+    "_QUIT",
-    "OPEN", "_OPEN",
+    "CLOSE",
-    "RECOVER", "_RECOVER",
+    "_CLOSE",
-    "WBLOCK", "_WBLOCK",
+    "QSAVE",
-    "INSERT", "_INSERT",
+    "_QSAVE",
-    "XREF", "_XREF",
+    "SAVEAS",
-    "SHELL", "_SHELL",
+    "_SAVEAS",
-    "SCRIPT", "_SCRIPT",
+    "NEW",
-    "APPLOAD", "_APPLOAD",
+    "_NEW",
-    "NETLOAD", "_NETLOAD",
+    "OPEN",
-    "VBARUN", "_VBARUN",
+    "_OPEN",
-    "VBALOAD", "_VBALOAD",
+    "RECOVER",
-    "SECURITYOPTIONS", "_SECURITYOPTIONS",
+    "_RECOVER",
+    "WBLOCK",
+    "_WBLOCK",
+    "INSERT",
+    "_INSERT",
+    "XREF",
+    "_XREF",
+    "SHELL",
+    "_SHELL",
+    "SCRIPT",
+    "_SCRIPT",
+    "APPLOAD",
+    "_APPLOAD",
+    "NETLOAD",
+    "_NETLOAD",
+    "VBARUN",
+    "_VBARUN",
+    "VBALOAD",
+    "_VBALOAD",
+    "SECURITYOPTIONS",
+    "_SECURITYOPTIONS",
 ]
 
 _DANGEROUS_COMMAND_PATTERNS = re.compile(
-    r"\b("
+    r"\b(" + "|".join(re.escape(cmd) for cmd in _DANGEROUS_COMMANDS) + r")\b",
-    + "|".join(re.escape(cmd) for cmd in _DANGEROUS_COMMANDS)
-    + r")\b",
     re.IGNORECASE,
 )
 
@@ -213,7 +231,9 @@ def sanitize_lisp(expression: str) -> str:
         raise ToolError("LISP expression cannot be empty.")
 
     if config.settings.dangerous_commands_enabled:
-        log.info("Dangerous commands enabled — bypassing LISP sanitization for: %s", expression[:80])
+        log.info(
+            "Dangerous commands enabled — bypassing LISP sanitization for: %s", expression[:80]
+        )
         return expression
 
     if _DANGEROUS_LISP_PATTERN.search(expression):

tests/test_analysis.py

@@ -68,7 +68,10 @@ async def test_analysis_entity_stats(backend):
     stats = await backend.analysis_stats()
     assert isinstance(stats, dict)
     by_type = stats.get("by_type", stats)
-    total = stats.get("total", stats.get("total_entities", sum(by_type.values()) if isinstance(by_type, dict) else 0))
+    total = stats.get(
+        "total",
+        stats.get("total_entities", sum(by_type.values()) if isinstance(by_type, dict) else 0),
+    )
     assert total >= 3
 
 

tests/test_batch_template.py

@@ -51,8 +51,12 @@ async def test_batch_modify_delete(backend):
 async def test_template_architectural_layers(backend):
     """Architectural template should create standard layers."""
     layer_defs = [
-        ("WALLS", 7), ("DOORS", 3), ("WINDOWS", 4),
+        ("WALLS", 7),
-        ("FURNITURE", 8), ("DIMENSIONS", 2), ("TEXT", 7),
+        ("DOORS", 3),
+        ("WINDOWS", 4),
+        ("FURNITURE", 8),
+        ("DIMENSIONS", 2),
+        ("TEXT", 7),
     ]
     for name, color in layer_defs:
         await backend.layer_create(name, color=color)
@@ -67,8 +71,11 @@ async def test_template_architectural_layers(backend):
 async def test_template_mechanical_layers(backend):
     """Mechanical template layers."""
     layer_defs = [
-        ("VISIBLE", 7), ("HIDDEN", 1), ("CENTER", 3),
+        ("VISIBLE", 7),
-        ("DIMENSIONS", 2), ("SECTION", 5),
+        ("HIDDEN", 1),
+        ("CENTER", 3),
+        ("DIMENSIONS", 2),
+        ("SECTION", 5),
     ]
     for name, color in layer_defs:
         await backend.layer_create(name, color=color)

tests/test_com_backend.py

@@ -48,6 +48,7 @@ async def test_active_document_switch_clears_com_document_state(monkeypatch):
     assert backend._preflight_result is None
     assert backend._gdt_datums_defined == set()
 
+
 # ---------------------------------------------------------------------------
 # normalize_lineweight — parametrized table
 # ---------------------------------------------------------------------------
@@ -107,7 +108,12 @@ def test_normalize_lineweight_non_numeric_passthrough():
 # _safe_send_command — CMDACTIVE polling / timeout / var-restore
 # ---------------------------------------------------------------------------
 
-def _make_mock_doc(cmdactive_sequence: list[int], modelspace_handles_pre: set[str] | None = None, modelspace_handles_post: set[str] | None = None) -> MagicMock:
+
+def _make_mock_doc(
+    cmdactive_sequence: list[int],
+    modelspace_handles_pre: set[str] | None = None,
+    modelspace_handles_post: set[str] | None = None,
+) -> MagicMock:
     """Build a minimal mock AutoCAD document for _safe_send_command tests."""
     doc = MagicMock()
 

tests/test_com_sprint3.py

@@ -53,6 +53,7 @@ class _Doc:
 
 # ── NEW-com-set-variable-coercion ───────────────────────────────────────────
 
+
 async def test_set_variable_coerces_string_to_sysvar_int_type(monkeypatch):
     app = MagicMock()
     app.GetVariable.return_value = 4159  # OSMODE current value is an int
@@ -69,6 +70,7 @@ async def test_set_variable_coerces_string_to_sysvar_int_type(monkeypatch):
 
 # ── R23 / N6 — run_lisp guard + value capture ───────────────────────────────
 
+
 async def test_run_lisp_refuses_when_cmdactive(monkeypatch):
     app = MagicMock()
     app.GetVariable.side_effect = lambda n: 1 if n == "CMDACTIVE" else 0
@@ -96,6 +98,7 @@ async def test_run_lisp_captures_value_from_users1(monkeypatch):
 
 # ── R16 — transaction flag cleared even on error ────────────────────────────
 
+
 async def test_transaction_begin_sets_flag_and_marks_undo(monkeypatch):
     doc = _Doc()
     doc.StartUndoMark = MagicMock()
@@ -136,6 +139,7 @@ async def test_transaction_rollback_uses_safe_send_command(monkeypatch):
 
 # ── R13 — offset honors side_x/side_y and deletes the unused copy ───────────
 
+
 async def test_offset_picks_copy_nearest_side_point(monkeypatch):
     # ent.Offset(+d) -> copy centred at (0, +10); ent.Offset(-d) -> (0, -10).
     pos_copy = MagicMock(name="pos")

tests/test_drawing.py

@@ -33,6 +33,7 @@ async def test_drawing_export_dxf(backend, tmp_path):
     result = await backend.drawing_export_dxf(export_path)
     assert result.get("ok") is True
     import os
+
     assert os.path.exists(export_path)
 
 

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({
+    res = await backend.drawing_settings(
-        "dimscale": 2.0, "linear_precision": 3, "ltscale": 0.5,
+        {
-    })
+            "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}

tests/test_engineering_gear.py

@@ -66,19 +66,41 @@ async def test_helical_gear_front_view_returns_metadata(backend):
     await ensure_standard_linetypes(backend)
     await ensure_engineering_layers(backend)
     res = await draw_helical_gear_front_view(
-        backend, module=3, teeth=24, helix_angle=20.0, hand="RH",
+        backend,
+        module=3,
+        teeth=24,
+        helix_angle=20.0,
+        hand="RH",
         center=(0.0, 0.0),
     )
     expected_keys = {
-        "outline", "pitch_circle", "base_circle", "outer_circle", "root_circle",
+        "outline",
-        "helix_symbol", "helix_label", "bore", "keyway", "metadata",
+        "pitch_circle",
+        "base_circle",
+        "outer_circle",
+        "root_circle",
+        "helix_symbol",
+        "helix_label",
+        "bore",
+        "keyway",
+        "metadata",
     }
     assert expected_keys.issubset(res.keys())
     md = res["metadata"]
     for k in (
-        "module", "teeth", "pressure_angle", "helix_angle", "hand", "center",
+        "module",
-        "bore_diameter", "keyway_width", "keyway_depth",
+        "teeth",
-        "pitch_radius", "outer_radius", "base_radius", "root_radius",
+        "pressure_angle",
+        "helix_angle",
+        "hand",
+        "center",
+        "bore_diameter",
+        "keyway_width",
+        "keyway_depth",
+        "pitch_radius",
+        "outer_radius",
+        "base_radius",
+        "root_radius",
     ):
         assert k in md, f"metadata missing key {k!r}"
 
@@ -88,8 +110,13 @@ async def test_helical_gear_with_bore_and_keyway_handles_present(backend):
     await ensure_standard_linetypes(backend)
     await ensure_engineering_layers(backend)
     res = await draw_helical_gear_front_view(
-        backend, module=3, teeth=24, helix_angle=20.0,
+        backend,
-        bore_diameter=25.0, keyway_width=8.0, keyway_depth=4.0,
+        module=3,
+        teeth=24,
+        helix_angle=20.0,
+        bore_diameter=25.0,
+        keyway_width=8.0,
+        keyway_depth=4.0,
     )
     assert res["bore"] is not None
     assert res["keyway"] is not None
@@ -102,7 +129,11 @@ async def test_helical_gear_metadata_radii_correct(backend):
     await ensure_standard_linetypes(backend)
     await ensure_engineering_layers(backend)
     res = await draw_helical_gear_front_view(
-        backend, module=3, teeth=24, helix_angle=20.0, pressure_angle=20.0,
+        backend,
+        module=3,
+        teeth=24,
+        helix_angle=20.0,
+        pressure_angle=20.0,
     )
     md = res["metadata"]
     assert math.isclose(md["pitch_radius"], 36.0, abs_tol=1e-6)
@@ -116,12 +147,19 @@ async def test_section_aa_does_not_draw_helix_lines(backend):
     await ensure_standard_linetypes(backend)
     await ensure_engineering_layers(backend)
     front = await draw_helical_gear_front_view(
-        backend, module=3, teeth=24, helix_angle=20.0,
+        backend,
-        bore_diameter=25.0, keyway_width=8.0, keyway_depth=4.0,
+        module=3,
+        teeth=24,
+        helix_angle=20.0,
+        bore_diameter=25.0,
+        keyway_width=8.0,
+        keyway_depth=4.0,
     )
     section = await draw_gear_section_aa(
-        backend, gear_metadata=front["metadata"],
+        backend,
-        x_offset=200.0, face_width=40.0,
+        gear_metadata=front["metadata"],
+        x_offset=200.0,
+        face_width=40.0,
     )
     assert "helix" not in section
     assert "helix_symbol" not in section

tests/test_engineering_keyway.py

@@ -37,8 +37,11 @@ async def test_draw_keyed_bore_returns_expected_handles(backend):
     await ensure_standard_linetypes(backend)
     await ensure_engineering_layers(backend)
     res = await draw_keyed_bore(
-        backend, center=(0.0, 0.0), bore_diameter=25.0,
+        backend,
-        keyway_width=8.0, keyway_depth=4.0,
+        center=(0.0, 0.0),
+        bore_diameter=25.0,
+        keyway_width=8.0,
+        keyway_depth=4.0,
     )
     for k in ("bore", "keyway_polyline", "centerline_h", "centerline_v"):
         assert k in res
@@ -50,8 +53,12 @@ async def test_draw_keyway_section_geometry(backend):
     await ensure_standard_linetypes(backend)
     await ensure_engineering_layers(backend)
     res = await draw_keyway_section(
-        backend, center=(0.0, 0.0), bore_diameter=25.0, face_width=40.0,
+        backend,
-        keyway_width=8.0, keyway_depth=4.0,
+        center=(0.0, 0.0),
+        bore_diameter=25.0,
+        face_width=40.0,
+        keyway_width=8.0,
+        keyway_depth=4.0,
     )
     assert "bore_top" in res
     assert "bore_bottom" in res

tests/test_engineering_titleblock.py

@@ -39,7 +39,8 @@ async def test_titleblock_outer_border_dimensions(backend):
 async def test_title_text_exact_match(backend):
     """Title text in the drawing must equal metadata.title verbatim."""
     result = await apply_iso_a3_titleblock(
-        backend, metadata=_meta(title="HELICAL GEAR"),
+        backend,
+        metadata=_meta(title="HELICAL GEAR"),
     )
     title_ent = await backend.entity_get(result["title_text"])
     assert title_ent.type == "TEXT"
@@ -50,9 +51,16 @@ async def test_titleblock_creates_text_for_each_metadata_field(backend):
     """value_texts must contain a handle for every metadata field."""
     result = await apply_iso_a3_titleblock(backend, metadata=_meta())
     expected_keys = {
-        "drawing_no", "revision", "sheet",
+        "drawing_no",
-        "part_no", "material", "scale",
+        "revision",
-        "drawn_by", "checked_by", "date", "company",
+        "sheet",
+        "part_no",
+        "material",
+        "scale",
+        "drawn_by",
+        "checked_by",
+        "date",
+        "company",
     }
     assert set(result["value_texts"].keys()) == expected_keys
     # All handles must resolve to TEXT entities
@@ -64,7 +72,9 @@ async def test_titleblock_creates_text_for_each_metadata_field(backend):
 async def test_titleblock_origin_offset(backend):
     """Passing origin=(100,50) must shift the bbox by that amount."""
     result = await apply_iso_a3_titleblock(
-        backend, metadata=_meta(), origin=(100.0, 50.0),
+        backend,
+        metadata=_meta(),
+        origin=(100.0, 50.0),
     )
     bbox = result["bbox"]
     assert bbox["min"][0] == pytest.approx(100.0)

tests/test_engineering_validator.py

@@ -73,7 +73,11 @@ async def test_validator_catches_helical_spur_title(backend, tmp_path):
     await ensure_standard_linetypes(backend)
     await ensure_engineering_layers(backend)
     await backend.entity_create_text(
-        text="HELICAL SPUR GEAR", x=0, y=0, height=5, layer="TEXT",
+        text="HELICAL SPUR GEAR",
+        x=0,
+        y=0,
+        height=5,
+        layer="TEXT",
     )
     await backend.drawing_save_as(str(tmp_path / "tb.dxf"))
     result = await DrawingValidator().run(backend, expected={"helix_angle": 20})
@@ -86,7 +90,11 @@ async def test_validator_catches_fake_dimension_text(backend, tmp_path):
     await ensure_standard_linetypes(backend)
     await ensure_engineering_layers(backend)
     await backend.entity_create_text(
-        text="Ø78", x=10, y=10, height=3.5, layer="DIM",
+        text="Ø78",
+        x=10,
+        y=10,
+        height=3.5,
+        layer="DIM",
     )
     await backend.drawing_save_as(str(tmp_path / "fake.dxf"))
     result = await DrawingValidator().run(backend)
@@ -124,7 +132,8 @@ async def test_validator_bore_missing_when_expected(backend, tmp_path):
     # No circle drawn at all
     await backend.drawing_save_as(str(tmp_path / "nobore.dxf"))
     result = await DrawingValidator().run(
-        backend, expected={"must_have_bore": True},
+        backend,
+        expected={"must_have_bore": True},
     )
     assert "bore_missing" in _codes(result)
 

tests/test_entity_corner_ops.py

@@ -15,6 +15,7 @@ def _close(a, b, tol=1e-6):
 
 # ─── TRIM ──────────────────────────────────────────────────────────────────
 
+
 class TestTrim:
     async def test_trim_keep_left(self, backend):
         target = await backend.entity_create_line(0, 0, 100, 0)
@@ -55,6 +56,7 @@ class TestTrim:
 
 # ─── EXTEND ────────────────────────────────────────────────────────────────
 
+
 class TestExtend:
     async def test_extend_auto_endpoint(self, backend):
         # Target ends at x=40; boundary is vertical at x=80.
@@ -84,6 +86,7 @@ class TestExtend:
 
 # ─── FILLET ────────────────────────────────────────────────────────────────
 
+
 class TestFillet:
     async def test_fillet_90_degree_corner(self, backend):
         # L-shape: horizontal (0,0)-(100,0) + vertical (100,0)-(100,80).
@@ -139,6 +142,7 @@ class TestFillet:
 
 # ─── CHAMFER ───────────────────────────────────────────────────────────────
 
+
 class TestChamfer:
     async def test_chamfer_symmetric(self, backend):
         l1 = await backend.entity_create_line(0, 0, 100, 0)

tests/test_entity_edit.py

@@ -14,6 +14,7 @@ pytestmark = pytest.mark.asyncio
 
 # ── entity_edit_text ────────────────────────────────────────────────────────
 
+
 async def test_edit_text_changes_content_keeps_handle(backend):
     t = await backend.entity_create_text("OLD LABEL", 0, 0, height=2.5, layer="TEXT")
     updated = await backend.entity_edit_text(t.handle, text="NEW LABEL")
@@ -44,6 +45,7 @@ async def test_edit_text_rejects_non_text(backend):
 
 # ── entity_edit_geometry ────────────────────────────────────────────────────
 
+
 async def test_edit_circle_radius_and_center(backend):
     c = await backend.entity_create_circle(0, 0, 10, layer="GEOMETRY")
     updated = await backend.entity_edit_geometry(c.handle, cx=5, cy=5, radius=20)

tests/test_ezdxf_backend.py

@@ -1,6 +1,5 @@
 """Tests for ezdxf backend — no AutoCAD required."""
 
-
 import pytest
 
 pytestmark = pytest.mark.asyncio

tests/test_http_auth.py

@@ -46,15 +46,18 @@ def _reload_server_with_token(token: str | None):
 # Auth object construction
 # ---------------------------------------------------------------------------
 
+
 def test_auth_object_built_when_token_set():
     """_auth is a StaticTokenVerifier when MCP_AUTH_TOKEN is non-empty."""
     with patch.dict("os.environ", {"MCP_AUTH_TOKEN": "secret-test-token-123"}):
         import config as cfg
+
         old_token = cfg.settings.mcp_auth_token
         cfg.settings.mcp_auth_token = "secret-test-token-123"
         try:
             sys.modules.pop("server", None)
             import server as srv
+
             assert srv._auth is not None
             assert isinstance(srv._auth, StaticTokenVerifier)
         finally:
@@ -65,11 +68,13 @@ def test_auth_object_built_when_token_set():
 def test_auth_object_none_when_no_token():
     """_auth is None when MCP_AUTH_TOKEN is empty (anonymous loopback mode)."""
     import config as cfg
+
     old_token = cfg.settings.mcp_auth_token
     cfg.settings.mcp_auth_token = ""
     try:
         sys.modules.pop("server", None)
         import server as srv
+
         assert srv._auth is None
     finally:
         cfg.settings.mcp_auth_token = old_token
@@ -79,11 +84,13 @@ def test_auth_object_none_when_no_token():
 def test_mcp_receives_auth_when_set():
     """The FastMCP instance's auth attribute matches the _auth object."""
     import config as cfg
+
     old_token = cfg.settings.mcp_auth_token
     cfg.settings.mcp_auth_token = "another-secret"
     try:
         sys.modules.pop("server", None)
         import server as srv
+
         # FastMCP stores auth as _auth_provider or similar; we check it via
         # the _auth module-level variable matching what was passed in.
         assert srv._auth is not None
@@ -97,11 +104,13 @@ def test_mcp_receives_auth_when_set():
 # _validate_http_bind guard
 # ---------------------------------------------------------------------------
 
+
 def test_validate_http_bind_loopback_no_error():
     """Loopback hosts pass validation regardless of token/allow_remote flags."""
     sys.modules.pop("server", None)
     import config as cfg
     import server as srv
+
     old_remote = cfg.settings.allow_remote_http
     old_token = cfg.settings.mcp_auth_token
     cfg.settings.allow_remote_http = False
@@ -121,6 +130,7 @@ def test_validate_http_bind_remote_without_flag_raises():
     sys.modules.pop("server", None)
     import config as cfg
     import server as srv
+
     old = cfg.settings.allow_remote_http
     cfg.settings.allow_remote_http = False
     try:
@@ -135,6 +145,7 @@ def test_validate_http_bind_remote_without_token_raises():
     sys.modules.pop("server", None)
     import config as cfg
     import server as srv
+
     old_remote = cfg.settings.allow_remote_http
     old_token = cfg.settings.mcp_auth_token
     cfg.settings.allow_remote_http = True
@@ -150,9 +161,11 @@ def test_validate_http_bind_remote_without_token_raises():
 def test_validate_http_bind_remote_with_token_logs_warning(caplog):
     """Remote bind with both flag and token logs a warning but does not raise."""
     import logging
+
     sys.modules.pop("server", None)
     import config as cfg
     import server as srv
+
     old_remote = cfg.settings.allow_remote_http
     old_token = cfg.settings.mcp_auth_token
     cfg.settings.allow_remote_http = True
@@ -160,7 +173,9 @@ def test_validate_http_bind_remote_with_token_logs_warning(caplog):
     try:
         with caplog.at_level(logging.WARNING, logger="server"):
             srv._validate_http_bind("0.0.0.0")  # should not raise
-        assert any("non-loopback" in r.message.lower() or "0.0.0.0" in r.message for r in caplog.records)
+        assert any(
+            "non-loopback" in r.message.lower() or "0.0.0.0" in r.message for r in caplog.records
+        )
     finally:
         cfg.settings.allow_remote_http = old_remote
         cfg.settings.mcp_auth_token = old_token

tests/test_meta_tools.py

@@ -16,10 +16,13 @@ def _close(a, b, tol=1e-6):
 
 # ─── drawing_plan ──────────────────────────────────────────────────────────
 
+
 class TestDrawingPlan:
     async def test_plan_returns_spec_with_intent(self, backend):
         plan = await backend.drawing_plan(
-            "L-bracket 50x80", sheet_size="A4", scale=1.0,
+            "L-bracket 50x80",
+            sheet_size="A4",
+            scale=1.0,
         )
         assert plan.intent == "L-bracket 50x80"
         assert plan.sheet_size == "A4"
@@ -36,6 +39,7 @@ class TestDrawingPlan:
 
 # ─── drawing_critique ──────────────────────────────────────────────────────
 
+
 class TestDrawingCritique:
     async def test_critique_clean_drawing(self, backend):
         # Bootstrap layer set so layer_color/iso128 don't trigger.
@@ -73,6 +77,7 @@ class TestDrawingCritique:
 
 # ─── point_from_snap ───────────────────────────────────────────────────────
 
+
 class TestPointFromSnap:
     async def test_snap_end_default(self, backend):
         line = await backend.entity_create_line(0, 0, 100, 0)
@@ -122,6 +127,7 @@ class TestPointFromSnap:
 
 # ─── construction layer ───────────────────────────────────────────────────
 
+
 class TestConstructionLayer:
     async def test_xline_creates_on_construction_layer(self, backend):
         xl = await backend.construction_xline(0, 0, 45)
@@ -140,6 +146,7 @@ class TestConstructionLayer:
 
 # ─── drawing_apply_iso_layers ──────────────────────────────────────────────
 
+
 class TestApplyISOLayers:
     async def test_mech_layer_set(self, backend):
         result = await backend.drawing_apply_iso_layers("mech")
@@ -170,13 +177,15 @@ class TestApplyISOLayers:
 
 # ─── dimension_auto ────────────────────────────────────────────────────────
 
+
 class TestDimensionAuto:
     async def test_chain_creates_one_dim_per_segment(self, backend):
         l1 = await backend.entity_create_line(0, 0, 30, 0)
         l2 = await backend.entity_create_line(30, 0, 70, 0)
         l3 = await backend.entity_create_line(70, 0, 100, 0)
         dims = await backend.dimension_auto(
-            [l1.handle, l2.handle, l3.handle], style="chain",
+            [l1.handle, l2.handle, l3.handle],
+            style="chain",
         )
         assert len(dims) == 3
 
@@ -198,6 +207,7 @@ class TestDimensionAuto:
 
 # ─── entity_select_smart ───────────────────────────────────────────────────
 
+
 class TestEntitySelectSmart:
     async def test_select_by_type(self, backend):
         await backend.entity_create_line(0, 0, 50, 0)
@@ -228,6 +238,7 @@ class TestEntitySelectSmart:
 
 # ─── Integration: plan → draw → critique pipeline ──────────────────────────
 
+
 class TestPremiumPipeline:
     async def test_full_l_bracket_pipeline_clean(self, backend):
         """plan → apply_layers → draw + fillet → clear construction → critique = []."""

tests/test_meta_tools_geometry.py

@@ -13,6 +13,7 @@ pytestmark = pytest.mark.asyncio
 # point_intersection
 # ---------------------------------------------------------------------------
 
+
 class TestPointIntersection:
     async def test_line_line_perpendicular(self, backend):
         """Horizontal and vertical lines cross at (50, 50)."""
@@ -91,6 +92,7 @@ class TestPointIntersection:
 # point_tangent
 # ---------------------------------------------------------------------------
 
+
 class TestPointTangent:
     async def test_tangent_from_outside(self, backend):
         """From (0, 0) to unit circle at (5, 0): tangent point is at (25/5, ±12/5)."""

tests/test_preflight.py

@@ -100,7 +100,8 @@ def test_preflight_does_not_invent_values_when_assumptions_disabled():
 @pytest.mark.asyncio
 async def test_backend_plan_accepts_matching_ready_preflight(backend):
     preflight = await backend.drawing_preflight(
-        "L bracket", requirements=_complete_requirements(),
+        "L bracket",
+        requirements=_complete_requirements(),
     )
 
     plan = await backend.drawing_plan(
@@ -125,7 +126,8 @@ async def test_backend_plan_rejects_not_ready_preflight_hash(backend):
 @pytest.mark.asyncio
 async def test_backend_plan_rejects_fields_that_do_not_match_preflight_hash(backend):
     preflight = await backend.drawing_preflight(
-        "L bracket", requirements=_complete_requirements(),
+        "L bracket",
+        requirements=_complete_requirements(),
     )
 
     with pytest.raises(RuntimeError, match="do not match"):
@@ -148,7 +150,8 @@ async def test_legacy_plan_remains_compatible_and_marks_preflight_skipped(backen
 @pytest.mark.asyncio
 async def test_document_change_clears_plan_preflight_and_gdt_state(backend):
     preflight = await backend.drawing_preflight(
-        "First drawing", requirements=_complete_requirements(),
+        "First drawing",
+        requirements=_complete_requirements(),
     )
     await backend.drawing_plan(
         "First drawing",

tests/test_refiner.py

@@ -66,9 +66,7 @@ async def test_refiner_repairs_construction_and_duplicates(backend):
     assert result.status == "threshold_met"
     assert result.final_score == 100.0
     assert result.rounds[0].score_after > result.rounds[0].score_before
-    assert await backend.drawing_critique(
+    assert await backend.drawing_critique(["duplicate_entities", "construction_left"]) == []
-        ["duplicate_entities", "construction_left"]
-    ) == []
 
 
 async def test_refiner_dry_run_does_not_mutate_drawing(backend):

tests/test_security.py

@@ -73,6 +73,7 @@ class TestValidatePath:
         monkeypatch.setenv("ALLOWED_PATHS", str(allowed_dir))
 
         import config
+
         config.settings = Settings()
 
         blocked = tmp_path / "blocked" / "file.dxf"
@@ -98,6 +99,7 @@ class TestValidatePath:
         monkeypatch.setenv("ALLOWED_PATHS", str(allowed_dir))
 
         import config
+
         config.settings = Settings()
 
         result = validate_path(str(test_file))
@@ -160,6 +162,7 @@ class TestSanitizeCommand:
         monkeypatch.setenv("DANGEROUS_COMMANDS_ENABLED", "true")
 
         import config
+
         config.settings = Settings()
 
         result = sanitize_command("ERASE ALL")
@@ -222,6 +225,7 @@ class TestSanitizeLisp:
         monkeypatch.setenv("DANGEROUS_COMMANDS_ENABLED", "true")
 
         import config
+
         config.settings = Settings()
 
         result = sanitize_lisp('(startapp "cmd")')

tests/test_sprint2_fixes.py

@@ -32,6 +32,7 @@ class _FakeCtx:
 
 # ── NEW-screenshot-1 ────────────────────────────────────────────────────────
 
+
 async def test_screenshot_renders_png_without_gui_thread_crash(backend):
     """view_screenshot runs in a worker thread; the Agg figure must not crash and
     must return valid PNG bytes."""
@@ -43,6 +44,7 @@ async def test_screenshot_renders_png_without_gui_thread_crash(backend):
 
 # ── I15 — critique is part of the finalize gate ─────────────────────────────
 
+
 async def test_finalize_runs_critique_and_blocks_on_construction(backend, tmp_path):
     from fastmcp.exceptions import ToolError
 
@@ -68,6 +70,7 @@ async def test_finalize_runs_critique_and_blocks_on_construction(backend, tmp_pa
 
 # ── R4 — dim_overlap critique fires ─────────────────────────────────────────
 
+
 async def test_dim_overlap_critique_is_not_a_noop(backend):
     await backend.drawing_apply_iso_layers("mech")
     # Two dimensions measuring the same segment overlap exactly.
@@ -80,6 +83,7 @@ async def test_dim_overlap_critique_is_not_a_noop(backend):
 
 # ── N4 — dim / construction layers follow the active layer set ──────────────
 
+
 async def test_iso13567_dim_and_construction_layers_resolve(backend):
     await backend.drawing_apply_iso_layers("iso13567")
     assert backend._active_layer_set_id() == "iso13567"
@@ -102,6 +106,7 @@ async def test_iso13567_dim_and_construction_layers_resolve(backend):
 
 # ── NEW-AUTH-1 — bind guard on the run_async launch path ────────────────────
 
+
 async def test_run_async_invokes_bind_guard_for_http(monkeypatch):
     import server
 
@@ -121,8 +126,7 @@ async def test_run_async_skips_guard_for_stdio(monkeypatch):
     import server
 
     seen = {}
-    monkeypatch.setattr(server, "_validate_http_bind",
+    monkeypatch.setattr(server, "_validate_http_bind", lambda h: seen.setdefault("host", h))
-                        lambda h: seen.setdefault("host", h))
 
     async def fake_orig(*args, **kwargs):
         return "stdio-ran"
@@ -135,6 +139,7 @@ async def test_run_async_skips_guard_for_stdio(monkeypatch):
 
 # ── NEW-gear-roottooth — outline never dips inside the root circle ──────────
 
+
 async def test_gear_outline_stays_outside_root_circle():
     from engineering.gear import generate_full_gear_outline
 
@@ -144,19 +149,28 @@ async def test_gear_outline_stays_outside_root_circle():
         pts = generate_full_gear_outline(module, teeth, pa)
         radii = [math.hypot(x, y) for x, y in pts]
         # No point may sit inside the root circle (the self-overlap bug for z>=~42).
-        assert min(radii) >= root_r - 1e-6, f"m={module} z={teeth}: min_r {min(radii)} < root_r {root_r}"
+        assert min(radii) >= root_r - 1e-6, (
+            f"m={module} z={teeth}: min_r {min(radii)} < root_r {root_r}"
+        )
 
 
 # ── NEW-section-dupbore / NEW-validator-keyway / NEW-gear-baseconstr ─────────
 
+
 async def test_gear_front_view_base_circle_persists_and_keyway_validates(backend, tmp_path):
     from engineering.gear import draw_helical_gear_front_view
     from engineering.validator import DrawingValidator
 
     await backend.drawing_apply_iso_layers("mech")
     res = await draw_helical_gear_front_view(
-        backend, module=2, teeth=20, helix_angle=0, center=(0, 0),
+        backend,
-        bore_diameter=20, keyway_width=6, keyway_depth=2.8,
+        module=2,
+        teeth=20,
+        helix_angle=0,
+        center=(0, 0),
+        bore_diameter=20,
+        keyway_width=6,
+        keyway_depth=2.8,
     )
     # NEW-gear-baseconstr: base circle is a persistent PHANTOM reference, not CONSTRUCTION.
     base = await backend.entity_get(res["base_circle"])
@@ -167,7 +181,8 @@ async def test_gear_front_view_base_circle_persists_and_keyway_validates(backend
     # NEW-validator-keyway: the open 4-point keyway polyline is now recognised.
     await backend.drawing_save_as(str(tmp_path / "gear.dxf"))
     vr = await DrawingValidator().run(
-        backend, expected={"must_have_bore": True, "must_have_keyway": True},
+        backend,
+        expected={"must_have_bore": True, "must_have_keyway": True},
     )
     assert "keyway_section_unverified" not in [f.code for f in vr.findings]
 
@@ -178,9 +193,15 @@ async def test_gear_section_does_not_duplicate_bore_lines(backend):
     await backend.drawing_apply_iso_layers("mech")
     await draw_gear_section_aa(
         backend,
-        gear_metadata={"outer_radius": 22, "center": [0, 0], "bore_diameter": 20,
+        gear_metadata={
-                       "keyway_width": 6, "keyway_depth": 2.8},
+            "outer_radius": 22,
-        x_offset=100, face_width=30,
+            "center": [0, 0],
+            "bore_diameter": 20,
+            "keyway_width": 6,
+            "keyway_depth": 2.8,
+        },
+        x_offset=100,
+        face_width=30,
     )
     dups = await backend.drawing_critique(focus=["duplicate_entities"])
     assert dups == []

tests/test_sprint3_fixes.py

@@ -27,6 +27,7 @@ class _Ctx:
 
 # ── N2 — format follows the file extension ──────────────────────────────────
 
+
 async def test_save_as_derives_format_from_extension(backend):
     import server
 
@@ -42,6 +43,7 @@ async def test_save_as_derives_format_from_extension(backend):
 
 # ── N3 — ARC length + length_range selection ────────────────────────────────
 
+
 async def test_arc_has_length_and_is_selectable(backend):
     arc = await backend.entity_create_arc(0, 0, 10, 0, 90)  # r=10, 90deg -> len ~15.708
     info = await backend.entity_get(arc.handle)
@@ -55,6 +57,7 @@ async def test_arc_has_length_and_is_selectable(backend):
 
 # ── N5 — cross-backend property parity ──────────────────────────────────────
 
+
 async def test_ezdxf_populates_bounding_box(backend):
     line = await backend.entity_create_line(0, 0, 30, 40)
     info = await backend.entity_get(line.handle)
@@ -78,6 +81,7 @@ async def test_mtext_honors_caller_rotation(backend):
 
 # ── NEW-dimauto-baseline-rotation ───────────────────────────────────────────
 
+
 async def test_baseline_dim_runs_parallel_to_rotated_baseline(backend):
     ln = await backend.entity_create_line(0, 0, 40, 40)  # 45-degree baseline
     dims = await backend.dimension_auto([ln.handle], style="baseline")
@@ -90,6 +94,7 @@ async def test_baseline_dim_runs_parallel_to_rotated_baseline(backend):
 
 # ── NEW-dimauto-ordinate-misnomer ───────────────────────────────────────────
 
+
 async def test_ordinate_dims_are_staggered_not_overlapping(backend):
     l1 = await backend.entity_create_line(0, 0, 20, 10)
     l2 = await backend.entity_create_line(0, 0, 40, 30)

tests/test_sprint4_base.py

@@ -25,6 +25,7 @@ pytestmark = pytest.mark.asyncio
 # Helpers
 # ---------------------------------------------------------------------------
 
+
 def _on_arc(pt, cx, cy, r, sa_deg, ea_deg, tol=1e-6):
     """True if pt lies on the circle of radius r AND within the [sa, ea] sweep
     (degrees, CCW, with wraparound)."""
@@ -41,10 +42,12 @@ def _on_arc(pt, cx, cy, r, sa_deg, ea_deg, tol=1e-6):
 # N7 — ARC snap angle-missing raises RuntimeError, not KeyError
 # ---------------------------------------------------------------------------
 
+
 class TestN7ArcAngleMissing:
     async def _patch_entity_get(self, backend, info: EntityInfo):
         async def _fake(handle):
             return info
+
         backend.entity_get = _fake  # type: ignore[method-assign]
 
     async def test_end_snap_missing_angles_raises_runtimeerror(self, backend):
@@ -107,6 +110,7 @@ class TestN7ArcAngleMissing:
 # NEW-base-1 — point_tangent on/near the perimeter must not raise ValueError
 # ---------------------------------------------------------------------------
 
+
 class TestNewBase1TangentClamp:
     async def test_from_point_exactly_on_circle_no_valueerror(self, backend):
         """A from-point exactly on the perimeter (d == r) degenerates to the
@@ -145,6 +149,7 @@ class TestNewBase1TangentClamp:
 # NEW-snap-quad-arc / NEW-snap-near-arc — snaps stay on the arc sweep
 # ---------------------------------------------------------------------------
 
+
 class TestNewSnapArcSweep:
     async def test_quad_on_quarter_arc_stays_on_sweep(self, backend):
         """Quarter arc 0..90 deg, r=10 at origin. Only the 0-deg and 90-deg
@@ -208,6 +213,7 @@ class TestNewSnapArcSweep:
 # N8 — get_plan_spec accessor exposes the stored PlanSpec
 # ---------------------------------------------------------------------------
 
+
 class TestN8GetPlanSpec:
     async def test_none_before_plan(self, backend):
         assert backend.get_plan_spec() is None

tests/test_sprint4_com.py

@@ -34,6 +34,7 @@ def _backend_no_executor() -> ComBackend:
 
 # ── R28 — _find_autocad_hwnd prefers Application.HWND over EnumWindows ───────
 
+
 async def test_find_hwnd_prefers_application_hwnd(monkeypatch):
     """The real main-frame handle from the COM app wins; EnumWindows is not
     consulted when the HWND read succeeds."""
@@ -98,6 +99,7 @@ async def test_find_hwnd_returns_none_when_win32_unavailable(monkeypatch):
 
 # ── S3 — block_list populates BlockInfo.description from .Comments ───────────
 
+
 class _Block:
     """Minimal stand-in for an AutoCAD block definition."""
 
@@ -167,10 +169,12 @@ async def test_block_list_description_empty_when_comments_none(monkeypatch):
 
 
 async def test_block_list_skips_anonymous_layout_blocks(monkeypatch):
-    doc = _doc_with_blocks([
+    doc = _doc_with_blocks(
+        [
             _Block("*Model_Space", comments="ignored"),
             _Block("GEAR", comments="spur gear"),
-    ])
+        ]
+    )
     monkeypatch.setattr(cb, "_acad_doc", lambda: doc)
 
     b = _backend_no_executor()

tests/test_sprint4_ezdxf.py

@@ -21,6 +21,7 @@ pytestmark = pytest.mark.asyncio
 
 # ── R24 — CENTER/HIDDEN linetype actually loaded + applied ──────────────────
 
+
 async def test_create_line_loads_center_linetype(backend):
     # Fresh doc: CENTER is not loaded yet.
     assert "CENTER" not in backend._doc.linetypes
@@ -53,6 +54,7 @@ async def test_create_line_continuous_does_not_error(backend):
 
 # ── S3 — block description surfaced from the definition ─────────────────────
 
+
 async def test_block_list_surfaces_description(backend):
     # Create a block from an entity, then stamp a description on its definition.
     seg = await backend.entity_create_line(0, 0, 10, 0)
@@ -76,6 +78,7 @@ async def test_block_list_description_defaults_empty(backend):
 
 # ── R26 / N9 — honest zoom payload shape ────────────────────────────────────
 
+
 async def test_zoom_extents_reports_not_applied(backend):
     res = await backend.view_zoom_extents()
     assert res["ok"] is True
@@ -92,6 +95,7 @@ async def test_zoom_window_reports_not_applied(backend):
 
 # ── NEW-undo-1 — undo/transaction stack behaviour under lock ────────────────
 
+
 async def test_undo_empty_stack_returns_error(backend):
     res = await backend.drawing_undo()
     assert res["ok"] is False

tests/test_sprint4_server.py

@@ -35,6 +35,7 @@ class _Ctx:
 
 # ── R20 — tool count comes from the public accessor and is a real number ─────
 
+
 async def test_registered_tool_count_is_positive_never_minus_one():
     import server
 
@@ -59,6 +60,7 @@ async def test_registered_tools_returns_objects_with_name_and_tags():
 
 # ── R15 — system_about tool_groups is dynamic + correct ──────────────────────
 
+
 async def test_system_about_includes_engineering_group(backend):
     import server
 
@@ -122,6 +124,7 @@ async def test_drawing_close_appears_in_groups(backend):
 
 # ── R20 — system_status reports a real tool_count, never -1 ──────────────────
 
+
 async def test_system_status_reports_real_tool_count(backend):
     import server
 
@@ -134,6 +137,7 @@ async def test_system_status_reports_real_tool_count(backend):
 
 # ── N8 — drawing_plan docstring corrected ────────────────────────────────────
 
+
 async def test_drawing_plan_docstring_not_misleading():
     import server
 

tests/test_sprint4_validator.py

@@ -37,7 +37,11 @@ async def test_spur_as_substring_does_not_false_match(backend, tmp_path):
     """R27: 'SPURIOUS' contains 'spur' but must NOT trip a SPUR mismatch."""
     await _bootstrap(backend)
     await backend.entity_create_text(
-        text="SPURIOUS HELICAL GEAR", x=0, y=0, height=5, layer="TEXT",
+        text="SPURIOUS HELICAL GEAR",
+        x=0,
+        y=0,
+        height=5,
+        layer="TEXT",
     )
     await backend.drawing_save_as(str(tmp_path / "spurious.dxf"))
     result = await DrawingValidator().run(backend, expected={"helix_angle": 15})
@@ -50,7 +54,11 @@ async def test_genuine_spur_title_flags_when_helical_expected(backend, tmp_path)
     """R27: a real 'SPUR GEAR' title still flags the mismatch when helix declared."""
     await _bootstrap(backend)
     await backend.entity_create_text(
-        text="SPUR GEAR", x=0, y=0, height=5, layer="TEXT",
+        text="SPUR GEAR",
+        x=0,
+        y=0,
+        height=5,
+        layer="TEXT",
     )
     await backend.drawing_save_as(str(tmp_path / "spur.dxf"))
     result = await DrawingValidator().run(backend, expected={"helix_angle": 15})
@@ -63,7 +71,11 @@ async def test_spur_word_in_titleblock_layer_flags(backend, tmp_path):
     """R27: title-block-scoped scan — SPUR on TITLEBLOCK layer still flags."""
     await _bootstrap(backend)
     await backend.entity_create_text(
-        text="SPUR GEAR", x=0, y=0, height=5, layer="TITLEBLOCK",
+        text="SPUR GEAR",
+        x=0,
+        y=0,
+        height=5,
+        layer="TITLEBLOCK",
     )
     await backend.drawing_save_as(str(tmp_path / "spur_tb.dxf"))
     result = await DrawingValidator().run(backend, expected={"helix_angle": 15})
@@ -74,7 +86,11 @@ async def test_substring_in_titleblock_layer_does_not_false_match(backend, tmp_p
     """R27: 'SPURIOUS' on TITLEBLOCK layer must not trip a SPUR match either."""
     await _bootstrap(backend)
     await backend.entity_create_text(
-        text="SPURIOUS NOTE", x=0, y=0, height=5, layer="TITLEBLOCK",
+        text="SPURIOUS NOTE",
+        x=0,
+        y=0,
+        height=5,
+        layer="TITLEBLOCK",
     )
     await backend.drawing_save_as(str(tmp_path / "spurious_tb.dxf"))
     result = await DrawingValidator().run(backend, expected={"helix_angle": 15})
@@ -87,7 +103,11 @@ async def test_helical_spur_combo_still_flags_invalid(backend, tmp_path):
     """R27: both whole words present -> invalid combo error preserved."""
     await _bootstrap(backend)
     await backend.entity_create_text(
-        text="HELICAL SPUR GEAR", x=0, y=0, height=5, layer="TEXT",
+        text="HELICAL SPUR GEAR",
+        x=0,
+        y=0,
+        height=5,
+        layer="TEXT",
     )
     await backend.drawing_save_as(str(tmp_path / "combo.dxf"))
     result = await DrawingValidator().run(backend, expected={"helix_angle": 15})
@@ -99,7 +119,11 @@ async def test_no_helix_expected_skips_title_check(backend, tmp_path):
     """Gating preserved: without helix_angle, a SPUR title raises no title finding."""
     await _bootstrap(backend)
     await backend.entity_create_text(
-        text="SPUR GEAR", x=0, y=0, height=5, layer="TEXT",
+        text="SPUR GEAR",
+        x=0,
+        y=0,
+        height=5,
+        layer="TEXT",
     )
     await backend.drawing_save_as(str(tmp_path / "nohelix.dxf"))
     result = await DrawingValidator().run(backend)
@@ -116,10 +140,18 @@ async def test_titleblock_layer_takes_precedence_over_text_layer(backend, tmp_pa
     """
     await _bootstrap(backend)
     await backend.entity_create_text(
-        text="HELICAL GEAR", x=0, y=0, height=5, layer="TITLEBLOCK",
+        text="HELICAL GEAR",
+        x=0,
+        y=0,
+        height=5,
+        layer="TITLEBLOCK",
     )
     await backend.entity_create_text(
-        text="SPUR TOOTH DETAIL NOTE", x=0, y=-20, height=3.5, layer="TEXT",
+        text="SPUR TOOTH DETAIL NOTE",
+        x=0,
+        y=-20,
+        height=3.5,
+        layer="TEXT",
     )
     await backend.drawing_save_as(str(tmp_path / "scope.dxf"))
     result = await DrawingValidator().run(backend, expected={"helix_angle": 15})

tests/test_table_leader.py

@@ -29,9 +29,7 @@ async def test_ezdxf_table_returns_composite_contract(backend):
 
 
 async def test_ezdxf_table_survives_save_and_reopen(backend, tmp_path):
-    result = await backend.entity_create_table(
+    result = await backend.entity_create_table(0, 30, rows=[["A", "1"]], headers=["Name", "Qty"])
-        0, 30, rows=[["A", "1"]], headers=["Name", "Qty"]
-    )
     path = tmp_path / "table.dxf"
     await backend.drawing_save_as(str(path), fmt="dxf")
     await backend.drawing_open(str(path))
@@ -39,9 +37,7 @@ async def test_ezdxf_table_survives_save_and_reopen(backend, tmp_path):
     entities = await backend.entity_list(limit=100)
     handles = {entity.handle for entity in entities}
     texts = {
-        entity.properties.get("text")
+        entity.properties.get("text") for entity in entities if entity.type in {"TEXT", "MTEXT"}
-        for entity in entities
-        if entity.type in {"TEXT", "MTEXT"}
     }
     assert set(result.properties["child_handles"]).issubset(handles)
     assert {"Name", "Qty", "A", "1"}.issubset(texts)