feat: add headless runner entry points

New file: runner.py with three entry points for silorunner:
- dag_extract(input_path, output_path): extract feature DAG as JSON
- validate(input_path, output_path): rebuild features, report pass/fail
- export(input_path, output_path, format): export to STEP/IGES/STL/OBJ

Invoked via: create --console -e 'from runner import dag_extract; ...'

Closes kindred/create#217

freecad/dag.py

@@ -0,0 +1,463 @@
+"""DAG extraction engine for FreeCAD documents.
+
+Extracts the feature tree from a FreeCAD document as nodes and edges
+for syncing to the Silo server.  No GUI dependencies -- usable in both
+desktop and headless (``--console``) mode.
+
+Public API
+----------
+classify_type(type_id)          -> Optional[str]
+compute_properties_hash(obj)    -> str
+extract_dag(doc)                -> (nodes, edges)
+"""
+
+import hashlib
+import json
+import math
+from typing import Any, Dict, List, Optional, Set, Tuple
+
+# ---------------------------------------------------------------------------
+# TypeId -> DAG node type mapping
+# ---------------------------------------------------------------------------
+
+_TYPE_MAP: Dict[str, str] = {
+    # Sketch
+    "Sketcher::SketchObject": "sketch",
+    # Sketch-based additive
+    "PartDesign::Pad": "pad",
+    "PartDesign::Revolution": "pad",
+    "PartDesign::AdditivePipe": "pad",
+    "PartDesign::AdditiveLoft": "pad",
+    "PartDesign::AdditiveHelix": "pad",
+    # Sketch-based subtractive
+    "PartDesign::Pocket": "pocket",
+    "PartDesign::Groove": "pocket",
+    "PartDesign::Hole": "pocket",
+    "PartDesign::SubtractivePipe": "pocket",
+    "PartDesign::SubtractiveLoft": "pocket",
+    "PartDesign::SubtractiveHelix": "pocket",
+    # Dress-up
+    "PartDesign::Fillet": "fillet",
+    "PartDesign::Chamfer": "chamfer",
+    "PartDesign::Draft": "chamfer",
+    "PartDesign::Thickness": "chamfer",
+    # Transformations
+    "PartDesign::Mirrored": "pad",
+    "PartDesign::LinearPattern": "pad",
+    "PartDesign::PolarPattern": "pad",
+    "PartDesign::Scaled": "pad",
+    "PartDesign::MultiTransform": "pad",
+    # Boolean
+    "PartDesign::Boolean": "pad",
+    # Additive primitives
+    "PartDesign::AdditiveBox": "pad",
+    "PartDesign::AdditiveCylinder": "pad",
+    "PartDesign::AdditiveSphere": "pad",
+    "PartDesign::AdditiveCone": "pad",
+    "PartDesign::AdditiveEllipsoid": "pad",
+    "PartDesign::AdditiveTorus": "pad",
+    "PartDesign::AdditivePrism": "pad",
+    "PartDesign::AdditiveWedge": "pad",
+    # Subtractive primitives
+    "PartDesign::SubtractiveBox": "pocket",
+    "PartDesign::SubtractiveCylinder": "pocket",
+    "PartDesign::SubtractiveSphere": "pocket",
+    "PartDesign::SubtractiveCone": "pocket",
+    "PartDesign::SubtractiveEllipsoid": "pocket",
+    "PartDesign::SubtractiveTorus": "pocket",
+    "PartDesign::SubtractivePrism": "pocket",
+    "PartDesign::SubtractiveWedge": "pocket",
+    # Containers
+    "PartDesign::Body": "body",
+    "App::Part": "part",
+    "Part::Feature": "part",
+    # Datum / reference
+    "PartDesign::Point": "datum",
+    "PartDesign::Line": "datum",
+    "PartDesign::Plane": "datum",
+    "PartDesign::CoordinateSystem": "datum",
+    "PartDesign::ShapeBinder": "datum",
+    "PartDesign::SubShapeBinder": "datum",
+}
+
+
+def classify_type(type_id: str) -> Optional[str]:
+    """Map a FreeCAD TypeId string to a DAG node type.
+
+    Returns one of ``sketch``, ``pad``, ``pocket``, ``fillet``,
+    ``chamfer``, ``body``, ``part``, ``datum``, or ``None`` if the
+    TypeId is not a recognized feature.
+    """
+    return _TYPE_MAP.get(type_id)
+
+
+# ---------------------------------------------------------------------------
+# Properties hash
+# ---------------------------------------------------------------------------
+
+
+def _safe_float(val: Any) -> Any:
+    """Convert a float to a JSON-safe value, replacing NaN/Infinity with 0."""
+    if isinstance(val, float) and (math.isnan(val) or math.isinf(val)):
+        return 0.0
+    return val
+
+
+def _prop_value(obj: Any, name: str) -> Any:
+    """Safely read ``obj.<name>.Value``, returning *None* on failure."""
+    try:
+        return _safe_float(getattr(obj, name).Value)
+    except Exception:
+        return None
+
+
+def _prop_raw(obj: Any, name: str) -> Any:
+    """Safely read ``obj.<name>``, returning *None* on failure."""
+    try:
+        return getattr(obj, name)
+    except Exception:
+        return None
+
+
+def _link_name(obj: Any, name: str) -> Optional[str]:
+    """Return the ``.Name`` of a linked object property, or *None*."""
+    try:
+        link = getattr(obj, name)
+        if isinstance(link, (list, tuple)):
+            link = link[0]
+        return link.Name if link is not None else None
+    except Exception:
+        return None
+
+
+def _collect_inputs(obj: Any) -> Dict[str, Any]:
+    """Extract the parametric inputs that affect *obj*'s geometry.
+
+    The returned dict is JSON-serialized and hashed to produce the
+    ``properties_hash`` for the DAG node.
+    """
+    tid = obj.TypeId
+    inputs: Dict[str, Any] = {"_type": tid}
+
+    # --- Sketch ---
+    if tid == "Sketcher::SketchObject":
+        inputs["geometry_count"] = _prop_raw(obj, "GeometryCount")
+        inputs["constraint_count"] = _prop_raw(obj, "ConstraintCount")
+        try:
+            inputs["geometry"] = obj.Shape.exportBrepToString()
+        except Exception:
+            pass
+        return inputs
+
+    # --- Extrude (Pad / Pocket) ---
+    if tid in ("PartDesign::Pad", "PartDesign::Pocket"):
+        inputs["length"] = _prop_value(obj, "Length")
+        inputs["type"] = str(_prop_raw(obj, "Type") or "")
+        inputs["reversed"] = _prop_raw(obj, "Reversed")
+        inputs["sketch"] = _link_name(obj, "Profile")
+        return inputs
+
+    # --- Revolution / Groove ---
+    if tid in ("PartDesign::Revolution", "PartDesign::Groove"):
+        inputs["angle"] = _prop_value(obj, "Angle")
+        inputs["type"] = str(_prop_raw(obj, "Type") or "")
+        inputs["reversed"] = _prop_raw(obj, "Reversed")
+        inputs["sketch"] = _link_name(obj, "Profile")
+        return inputs
+
+    # --- Hole ---
+    if tid == "PartDesign::Hole":
+        inputs["diameter"] = _prop_value(obj, "Diameter")
+        inputs["depth"] = _prop_value(obj, "Depth")
+        inputs["threaded"] = _prop_raw(obj, "Threaded")
+        inputs["thread_type"] = str(_prop_raw(obj, "ThreadType") or "")
+        inputs["depth_type"] = str(_prop_raw(obj, "DepthType") or "")
+        inputs["sketch"] = _link_name(obj, "Profile")
+        return inputs
+
+    # --- Pipe / Loft / Helix (additive + subtractive) ---
+    if tid in (
+        "PartDesign::AdditivePipe",
+        "PartDesign::SubtractivePipe",
+        "PartDesign::AdditiveLoft",
+        "PartDesign::SubtractiveLoft",
+        "PartDesign::AdditiveHelix",
+        "PartDesign::SubtractiveHelix",
+    ):
+        inputs["sketch"] = _link_name(obj, "Profile")
+        inputs["spine"] = _link_name(obj, "Spine")
+        return inputs
+
+    # --- Fillet ---
+    if tid == "PartDesign::Fillet":
+        inputs["radius"] = _prop_value(obj, "Radius")
+        return inputs
+
+    # --- Chamfer ---
+    if tid == "PartDesign::Chamfer":
+        inputs["chamfer_type"] = str(_prop_raw(obj, "ChamferType") or "")
+        inputs["size"] = _prop_value(obj, "Size")
+        inputs["size2"] = _prop_value(obj, "Size2")
+        inputs["angle"] = _prop_value(obj, "Angle")
+        return inputs
+
+    # --- Draft ---
+    if tid == "PartDesign::Draft":
+        inputs["angle"] = _prop_value(obj, "Angle")
+        inputs["reversed"] = _prop_raw(obj, "Reversed")
+        return inputs
+
+    # --- Thickness ---
+    if tid == "PartDesign::Thickness":
+        inputs["value"] = _prop_value(obj, "Value")
+        inputs["reversed"] = _prop_raw(obj, "Reversed")
+        inputs["mode"] = str(_prop_raw(obj, "Mode") or "")
+        inputs["join"] = str(_prop_raw(obj, "Join") or "")
+        return inputs
+
+    # --- Mirrored ---
+    if tid == "PartDesign::Mirrored":
+        inputs["mirror_plane"] = _link_name(obj, "MirrorPlane")
+        return inputs
+
+    # --- LinearPattern ---
+    if tid == "PartDesign::LinearPattern":
+        inputs["direction"] = _link_name(obj, "Direction")
+        inputs["reversed"] = _prop_raw(obj, "Reversed")
+        inputs["length"] = _prop_value(obj, "Length")
+        inputs["occurrences"] = _prop_value(obj, "Occurrences")
+        return inputs
+
+    # --- PolarPattern ---
+    if tid == "PartDesign::PolarPattern":
+        inputs["axis"] = _link_name(obj, "Axis")
+        inputs["reversed"] = _prop_raw(obj, "Reversed")
+        inputs["angle"] = _prop_value(obj, "Angle")
+        inputs["occurrences"] = _prop_value(obj, "Occurrences")
+        return inputs
+
+    # --- Scaled ---
+    if tid == "PartDesign::Scaled":
+        inputs["factor"] = _prop_value(obj, "Factor")
+        inputs["occurrences"] = _prop_value(obj, "Occurrences")
+        return inputs
+
+    # --- MultiTransform ---
+    if tid == "PartDesign::MultiTransform":
+        try:
+            inputs["transform_count"] = len(obj.Transformations)
+        except Exception:
+            pass
+        return inputs
+
+    # --- Boolean ---
+    if tid == "PartDesign::Boolean":
+        inputs["type"] = str(_prop_raw(obj, "Type") or "")
+        return inputs
+
+    # --- Primitives (additive) ---
+    if tid in (
+        "PartDesign::AdditiveBox",
+        "PartDesign::SubtractiveBox",
+    ):
+        inputs["length"] = _prop_value(obj, "Length")
+        inputs["width"] = _prop_value(obj, "Width")
+        inputs["height"] = _prop_value(obj, "Height")
+        return inputs
+
+    if tid in (
+        "PartDesign::AdditiveCylinder",
+        "PartDesign::SubtractiveCylinder",
+    ):
+        inputs["radius"] = _prop_value(obj, "Radius")
+        inputs["height"] = _prop_value(obj, "Height")
+        inputs["angle"] = _prop_value(obj, "Angle")
+        return inputs
+
+    if tid in (
+        "PartDesign::AdditiveSphere",
+        "PartDesign::SubtractiveSphere",
+    ):
+        inputs["radius"] = _prop_value(obj, "Radius")
+        return inputs
+
+    if tid in (
+        "PartDesign::AdditiveCone",
+        "PartDesign::SubtractiveCone",
+    ):
+        inputs["radius1"] = _prop_value(obj, "Radius1")
+        inputs["radius2"] = _prop_value(obj, "Radius2")
+        inputs["height"] = _prop_value(obj, "Height")
+        return inputs
+
+    if tid in (
+        "PartDesign::AdditiveEllipsoid",
+        "PartDesign::SubtractiveEllipsoid",
+    ):
+        inputs["radius1"] = _prop_value(obj, "Radius1")
+        inputs["radius2"] = _prop_value(obj, "Radius2")
+        inputs["radius3"] = _prop_value(obj, "Radius3")
+        return inputs
+
+    if tid in (
+        "PartDesign::AdditiveTorus",
+        "PartDesign::SubtractiveTorus",
+    ):
+        inputs["radius1"] = _prop_value(obj, "Radius1")
+        inputs["radius2"] = _prop_value(obj, "Radius2")
+        return inputs
+
+    if tid in (
+        "PartDesign::AdditivePrism",
+        "PartDesign::SubtractivePrism",
+    ):
+        inputs["polygon"] = _prop_raw(obj, "Polygon")
+        inputs["circumradius"] = _prop_value(obj, "Circumradius")
+        inputs["height"] = _prop_value(obj, "Height")
+        return inputs
+
+    if tid in (
+        "PartDesign::AdditiveWedge",
+        "PartDesign::SubtractiveWedge",
+    ):
+        for dim in (
+            "Xmin",
+            "Ymin",
+            "Zmin",
+            "X2min",
+            "Z2min",
+            "Xmax",
+            "Ymax",
+            "Zmax",
+            "X2max",
+            "Z2max",
+        ):
+            inputs[dim.lower()] = _prop_value(obj, dim)
+        return inputs
+
+    # --- Datum / ShapeBinder ---
+    if tid in (
+        "PartDesign::Point",
+        "PartDesign::Line",
+        "PartDesign::Plane",
+        "PartDesign::CoordinateSystem",
+        "PartDesign::ShapeBinder",
+        "PartDesign::SubShapeBinder",
+    ):
+        try:
+            p = obj.Placement
+            inputs["position"] = {
+                "x": _safe_float(p.Base.x),
+                "y": _safe_float(p.Base.y),
+                "z": _safe_float(p.Base.z),
+            }
+            inputs["rotation"] = {
+                "axis_x": _safe_float(p.Rotation.Axis.x),
+                "axis_y": _safe_float(p.Rotation.Axis.y),
+                "axis_z": _safe_float(p.Rotation.Axis.z),
+                "angle": _safe_float(p.Rotation.Angle),
+            }
+        except Exception:
+            pass
+        return inputs
+
+    # --- Body / Part (containers) ---
+    if tid in ("PartDesign::Body", "App::Part", "Part::Feature"):
+        try:
+            inputs["child_count"] = len(obj.Group)
+        except Exception:
+            inputs["child_count"] = 0
+        return inputs
+
+    # --- Fallback ---
+    inputs["label"] = obj.Label
+    return inputs
+
+
+def compute_properties_hash(obj: Any) -> str:
+    """Return a SHA-256 hex digest of *obj*'s parametric inputs.
+
+    The hash is used for memoization -- if a node's inputs haven't
+    changed since the last validation run, re-validation can be skipped.
+    """
+    inputs = _collect_inputs(obj)
+    canonical = json.dumps(inputs, sort_keys=True, default=str)
+    return hashlib.sha256(canonical.encode()).hexdigest()
+
+
+# ---------------------------------------------------------------------------
+# DAG extraction
+# ---------------------------------------------------------------------------
+
+
+def extract_dag(
+    doc: Any,
+) -> Tuple[List[Dict[str, Any]], List[Dict[str, Any]]]:
+    """Walk a FreeCAD document and return ``(nodes, edges)``.
+
+    *nodes* is a list of dicts matching the Silo ``PUT /dag`` payload
+    schema.  *edges* connects dependencies (source) to dependents
+    (target).
+
+    Only objects whose TypeId is recognized by :func:`classify_type`
+    are included.  Edges are limited to pairs where **both** endpoints
+    are included, preventing dangling references to internal objects
+    such as ``App::Origin``.
+    """
+    # Pass 1 -- identify included objects
+    included: Set[str] = set()
+    classified: Dict[str, str] = {}  # obj.Name -> node_type
+
+    for obj in doc.Objects:
+        if not hasattr(obj, "TypeId"):
+            continue
+        node_type = classify_type(obj.TypeId)
+        if node_type is not None:
+            included.add(obj.Name)
+            classified[obj.Name] = node_type
+
+    # Pass 2 -- build nodes and edges
+    nodes: List[Dict[str, Any]] = []
+    edges: List[Dict[str, Any]] = []
+    seen_edges: Set[Tuple[str, str]] = set()
+
+    for obj in doc.Objects:
+        if obj.Name not in included:
+            continue
+
+        nodes.append(
+            {
+                "node_key": obj.Name,
+                "node_type": classified[obj.Name],
+                "properties_hash": compute_properties_hash(obj),
+                "metadata": {
+                    "label": obj.Label,
+                    "type_id": obj.TypeId,
+                },
+            }
+        )
+
+        # Walk dependencies: OutList contains objects this one depends on
+        try:
+            out_list = obj.OutList
+        except Exception:
+            continue
+
+        for dep in out_list:
+            if not hasattr(dep, "Name"):
+                continue
+            if dep.Name not in included:
+                continue
+            edge_key = (dep.Name, obj.Name)
+            if edge_key in seen_edges:
+                continue
+            seen_edges.add(edge_key)
+            edges.append(
+                {
+                    "source_key": dep.Name,
+                    "target_key": obj.Name,
+                    "edge_type": "depends_on",
+                }
+            )
+
+    return nodes, edges

freecad/runner.py

@@ -0,0 +1,156 @@
+"""Headless runner entry points for silorunner compute jobs.
+
+These functions are invoked via ``create --console -e`` by the
+silorunner binary.  They must work without a display server.
+
+Entry Points
+------------
+dag_extract(input_path, output_path)
+    Extract feature DAG and write JSON.
+validate(input_path, output_path)
+    Rebuild all features and report pass/fail per node.
+export(input_path, output_path, format='step')
+    Export geometry to STEP, IGES, STL, or OBJ.
+"""
+
+import json
+
+import FreeCAD
+
+
+def dag_extract(input_path, output_path):
+    """Extract the feature DAG from a Create file.
+
+    Parameters
+    ----------
+    input_path : str
+        Path to the ``.kc`` or ``.FCStd`` file.
+    output_path : str
+        Path to write the JSON output.
+
+    Output JSON::
+
+        {"nodes": [...], "edges": [...]}
+    """
+    from dag import extract_dag
+
+    doc = FreeCAD.openDocument(input_path)
+    try:
+        nodes, edges = extract_dag(doc)
+        with open(output_path, "w") as f:
+            json.dump({"nodes": nodes, "edges": edges}, f)
+        FreeCAD.Console.PrintMessage(
+            f"DAG extracted: {len(nodes)} nodes, {len(edges)} edges -> {output_path}\n"
+        )
+    finally:
+        FreeCAD.closeDocument(doc.Name)
+
+
+def validate(input_path, output_path):
+    """Validate a Create file by rebuilding all features.
+
+    Parameters
+    ----------
+    input_path : str
+        Path to the ``.kc`` or ``.FCStd`` file.
+    output_path : str
+        Path to write the JSON output.
+
+    Output JSON::
+
+        {
+            "valid": true/false,
+            "nodes": [
+                {"node_key": "Pad001", "state": "clean", "message": null, "properties_hash": "..."},
+                ...
+            ]
+        }
+    """
+    from dag import classify_type, compute_properties_hash
+
+    doc = FreeCAD.openDocument(input_path)
+    try:
+        doc.recompute()
+
+        results = []
+        all_valid = True
+
+        for obj in doc.Objects:
+            if not hasattr(obj, "TypeId"):
+                continue
+            node_type = classify_type(obj.TypeId)
+            if node_type is None:
+                continue
+
+            state = "clean"
+            message = None
+            if hasattr(obj, "isValid") and not obj.isValid():
+                state = "failed"
+                message = f"Feature {obj.Label} failed to recompute"
+                all_valid = False
+
+            results.append(
+                {
+                    "node_key": obj.Name,
+                    "state": state,
+                    "message": message,
+                    "properties_hash": compute_properties_hash(obj),
+                }
+            )
+
+        with open(output_path, "w") as f:
+            json.dump({"valid": all_valid, "nodes": results}, f)
+
+        status = "PASS" if all_valid else "FAIL"
+        FreeCAD.Console.PrintMessage(
+            f"Validation {status}: {len(results)} nodes -> {output_path}\n"
+        )
+    finally:
+        FreeCAD.closeDocument(doc.Name)
+
+
+def export(input_path, output_path, format="step"):
+    """Export a Create file to an external geometry format.
+
+    Parameters
+    ----------
+    input_path : str
+        Path to the ``.kc`` or ``.FCStd`` file.
+    output_path : str
+        Path to write the exported file.
+    format : str
+        One of ``step``, ``iges``, ``stl``, ``obj``.
+    """
+    import Part
+
+    doc = FreeCAD.openDocument(input_path)
+    try:
+        shapes = [
+            obj.Shape for obj in doc.Objects if hasattr(obj, "Shape") and obj.Shape
+        ]
+        if not shapes:
+            raise ValueError("No geometry found in document")
+
+        compound = Part.makeCompound(shapes)
+
+        format_lower = format.lower()
+        if format_lower == "step":
+            compound.exportStep(output_path)
+        elif format_lower == "iges":
+            compound.exportIges(output_path)
+        elif format_lower == "stl":
+            import Mesh
+
+            Mesh.export([compound], output_path)
+        elif format_lower == "obj":
+            import Mesh
+
+            Mesh.export([compound], output_path)
+        else:
+            raise ValueError(f"Unsupported format: {format}")
+
+        FreeCAD.Console.PrintMessage(
+            f"Exported {format_lower.upper()} -> {output_path}\n"
+        )
+    finally:
+        FreeCAD.closeDocument(doc.Name)

freecad/silo_commands.py

@@ -26,7 +26,9 @@ from silo_client import (
 _PREF_GROUP = "User parameter:BaseApp/Preferences/Mod/KindredSilo"
 
 # Configuration - preferences take priority over env vars
-SILO_PROJECTS_DIR = os.environ.get("SILO_PROJECTS_DIR", os.path.expanduser("~/projects"))
+SILO_PROJECTS_DIR = os.environ.get(
+    "SILO_PROJECTS_DIR", os.path.expanduser("~/projects")
+)
 
 
 # ---------------------------------------------------------------------------
@@ -64,7 +66,9 @@ class FreeCADSiloSettings(SiloSettings):
         param = FreeCAD.ParamGet(_PREF_GROUP)
         return param.GetString("SslCertPath", "")
 
-    def save_auth(self, username: str, role: str = "", source: str = "", token: str = ""):
+    def save_auth(
+        self, username: str, role: str = "", source: str = "", token: str = ""
+    ):
         param = FreeCAD.ParamGet(_PREF_GROUP)
         param.SetString("AuthUsername", username)
         param.SetString("AuthRole", role)
@@ -122,7 +126,9 @@ def _get_ssl_verify() -> bool:
 def _get_ssl_context():
     from silo_client._ssl import build_ssl_context
 
-    return build_ssl_context(_fc_settings.get_ssl_verify(), _fc_settings.get_ssl_cert_path())
+    return build_ssl_context(
+        _fc_settings.get_ssl_verify(), _fc_settings.get_ssl_cert_path()
+    )
 
 
 def _get_auth_headers() -> Dict[str, str]:
@@ -179,7 +185,9 @@ def _fetch_server_mode() -> str:
 # Icon helper
 # ---------------------------------------------------------------------------
 
-_ICON_DIR = os.path.join(os.path.dirname(os.path.abspath(__file__)), "resources", "icons")
+_ICON_DIR = os.path.join(
+    os.path.dirname(os.path.abspath(__file__)), "resources", "icons"
+)
 
 
 def _icon(name):
@@ -206,41 +214,45 @@ def get_projects_dir() -> Path:
 def get_cad_file_path(part_number: str, description: str = "") -> Path:
     """Generate canonical file path for a CAD file.
 
-    Path format: ~/projects/cad/{category_code}_{category_name}/{part_number}_{description}.FCStd
+    Path format: ~/projects/cad/{category_code}_{category_name}/{part_number}_{description}.kc
     """
     category, _ = parse_part_number(part_number)
     folder_name = get_category_folder_name(category)
 
     if description:
-        filename = f"{part_number}_{sanitize_filename(description)}.FCStd"
+        filename = f"{part_number}_{sanitize_filename(description)}.kc"
     else:
-        filename = f"{part_number}.FCStd"
+        filename = f"{part_number}.kc"
 
     return get_projects_dir() / "cad" / folder_name / filename
 
 
 def find_file_by_part_number(part_number: str) -> Optional[Path]:
-    """Find existing CAD file for a part number."""
+    """Find existing CAD file for a part number. Prefers .kc over .FCStd."""
     category, _ = parse_part_number(part_number)
     folder_name = get_category_folder_name(category)
     cad_dir = get_projects_dir() / "cad" / folder_name
 
-    if cad_dir.exists():
-        matches = list(cad_dir.glob(f"{part_number}*.FCStd"))
-        if matches:
-            return matches[0]
-
-    base_cad_dir = get_projects_dir() / "cad"
-    if base_cad_dir.exists():
-        for subdir in base_cad_dir.iterdir():
-            if subdir.is_dir():
-                matches = list(subdir.glob(f"{part_number}*.FCStd"))
-                if matches:
-                    return matches[0]
+    for search_dir in _search_dirs(cad_dir):
+        for ext in ("*.kc", "*.FCStd"):
+            matches = list(search_dir.glob(f"{part_number}{ext[1:]}"))
+            if matches:
+                return matches[0]
 
     return None
 
 
+def _search_dirs(category_dir: Path):
+    """Yield the category dir, then all sibling dirs under cad/."""
+    if category_dir.exists():
+        yield category_dir
+    base_cad_dir = category_dir.parent
+    if base_cad_dir.exists():
+        for subdir in base_cad_dir.iterdir():
+            if subdir.is_dir() and subdir != category_dir:
+                yield subdir
+
+
 def search_local_files(search_term: str = "", category_filter: str = "") -> list:
     """Search for CAD files in local cad directory."""
     results = []
@@ -260,7 +272,9 @@ def search_local_files(search_term: str = "", category_filter: str = "") -> list
         if category_filter and category_code.upper() != category_filter.upper():
             continue
 
-        for fcstd_file in category_dir.glob("*.FCStd"):
+        for fcstd_file in sorted(
+            list(category_dir.glob("*.kc")) + list(category_dir.glob("*.FCStd"))
+        ):
             filename = fcstd_file.stem
             parts = filename.split("_", 1)
             part_number = parts[0]
@@ -574,7 +588,9 @@ def handle_kindred_url(url: str):
     parts = [parsed.netloc] + [p for p in parsed.path.split("/") if p]
     if len(parts) >= 2 and parts[0] == "item":
         part_number = parts[1]
-        FreeCAD.Console.PrintMessage(f"Silo: Opening item {part_number} from kindred:// URL\n")
+        FreeCAD.Console.PrintMessage(
+            f"Silo: Opening item {part_number} from kindred:// URL\n"
+        )
         _sync.open_item(part_number)
 
 
@@ -594,9 +610,8 @@ class Silo_Open:
         }
 
     def Activated(self):
-        from PySide import QtGui, QtWidgets
-
         from open_search import OpenItemWidget
+        from PySide import QtGui, QtWidgets
 
         mw = FreeCADGui.getMainWindow()
         mdi = mw.findChild(QtWidgets.QMdiArea)
@@ -643,7 +658,6 @@ class Silo_New:
 
     def Activated(self):
         from PySide import QtGui, QtWidgets
-
         from schema_form import SchemaFormWidget
 
         mw = FreeCADGui.getMainWindow()
@@ -683,7 +697,9 @@ class Silo_New:
                         },
                     )
                     obj.Label = part_number
-                    _sync.save_to_canonical_path(FreeCAD.ActiveDocument, force_rename=True)
+                    _sync.save_to_canonical_path(
+                        FreeCAD.ActiveDocument, force_rename=True
+                    )
                 else:
                     _sync.create_document_for_item(result, save=True)
 
@@ -701,6 +717,28 @@ class Silo_New:
         return _server_mode == "normal"
 
 
+def _push_dag_after_upload(doc, part_number, revision_number):
+    """Extract and push the feature DAG after a successful upload.
+
+    Failures are logged as warnings -- DAG sync must never block save.
+    """
+    try:
+        from dag import extract_dag
+
+        nodes, edges = extract_dag(doc)
+        if not nodes:
+            return
+
+        result = _client.push_dag(part_number, revision_number, nodes, edges)
+        node_count = result.get("node_count", len(nodes))
+        edge_count = result.get("edge_count", len(edges))
+        FreeCAD.Console.PrintMessage(
+            f"DAG synced: {node_count} nodes, {edge_count} edges\n"
+        )
+    except Exception as e:
+        FreeCAD.Console.PrintWarning(f"DAG sync failed: {e}\n")
+
+
 class Silo_Save:
     """Save locally and upload to MinIO."""
 
@@ -764,11 +802,15 @@ class Silo_Save:
 
         # Try to upload to MinIO
         try:
-            result = _client._upload_file(part_number, str(file_path), properties, "Auto-save")
+            result = _client._upload_file(
+                part_number, str(file_path), properties, "Auto-save"
+            )
 
             new_rev = result["revision_number"]
             FreeCAD.Console.PrintMessage(f"Uploaded as revision {new_rev}\n")
 
+            _push_dag_after_upload(doc, part_number, new_rev)
+
         except Exception as e:
             FreeCAD.Console.PrintWarning(f"Upload failed: {e}\n")
             FreeCAD.Console.PrintMessage("File saved locally but not uploaded.\n")
@@ -797,7 +839,9 @@ class Silo_Commit:
 
         obj = get_tracked_object(doc)
         if not obj:
-            FreeCAD.Console.PrintError("No tracked object. Use 'New' to register first.\n")
+            FreeCAD.Console.PrintError(
+                "No tracked object. Use 'New' to register first.\n"
+            )
             return
 
         part_number = obj.SiloPartNumber
@@ -814,11 +858,15 @@ class Silo_Commit:
             if not file_path:
                 return
 
-            result = _client._upload_file(part_number, str(file_path), properties, comment)
+            result = _client._upload_file(
+                part_number, str(file_path), properties, comment
+            )
 
             new_rev = result["revision_number"]
             FreeCAD.Console.PrintMessage(f"Committed revision {new_rev}: {comment}\n")
 
+            _push_dag_after_upload(doc, part_number, new_rev)
+
         except Exception as e:
             FreeCAD.Console.PrintError(f"Commit failed: {e}\n")
 
@@ -863,7 +911,9 @@ def _check_pull_conflicts(part_number, local_path, doc=None):
             server_updated = item.get("updated_at", "")
             if server_updated:
                 # Parse ISO format timestamp
-                server_dt = datetime.datetime.fromisoformat(server_updated.replace("Z", "+00:00"))
+                server_dt = datetime.datetime.fromisoformat(
+                    server_updated.replace("Z", "+00:00")
+                )
                 if server_dt > local_mtime:
                     conflicts.append("Server version is newer than local file.")
         except Exception:
@@ -893,7 +943,9 @@ class SiloPullDialog:
         # Revision table
         self._table = QtGui.QTableWidget()
         self._table.setColumnCount(5)
-        self._table.setHorizontalHeaderLabels(["Rev", "Date", "Comment", "Status", "File"])
+        self._table.setHorizontalHeaderLabels(
+            ["Rev", "Date", "Comment", "Status", "File"]
+        )
         self._table.setSelectionBehavior(QtGui.QAbstractItemView.SelectRows)
         self._table.setSelectionMode(QtGui.QAbstractItemView.SingleSelection)
         self._table.setEditTriggers(QtGui.QAbstractItemView.NoEditTriggers)
@@ -965,6 +1017,67 @@ class SiloPullDialog:
         return None
 
 
+def _pull_dependencies(part_number, progress_callback=None):
+    """Recursively pull all BOM children that have files on the server.
+
+    Returns list of (part_number, dest_path) tuples for successfully pulled files.
+    Skips children that already exist locally.
+    """
+    pulled = []
+    try:
+        bom = _client.get_bom(part_number)
+    except Exception as e:
+        FreeCAD.Console.PrintWarning(f"Could not fetch BOM for {part_number}: {e}\n")
+        return pulled
+
+    for entry in bom:
+        child_pn = entry.get("child_part_number")
+        if not child_pn:
+            continue
+
+        # Skip if already exists locally
+        existing = find_file_by_part_number(child_pn)
+        if existing and existing.exists():
+            FreeCAD.Console.PrintMessage(
+                f"  {child_pn}: already exists at {existing}\n"
+            )
+            # Still recurse — this child may itself be an assembly with missing deps
+            _pull_dependencies(child_pn, progress_callback)
+            continue
+
+        # Check if this child has a file on the server
+        try:
+            latest = _client.latest_file_revision(child_pn)
+        except Exception:
+            latest = None
+
+        if not latest or not latest.get("file_key"):
+            FreeCAD.Console.PrintMessage(f"  {child_pn}: no file on server, skipping\n")
+            continue
+
+        # Determine destination path
+        child_desc = entry.get("child_description", "")
+        dest_path = get_cad_file_path(child_pn, child_desc)
+        dest_path.parent.mkdir(parents=True, exist_ok=True)
+
+        rev_num = latest["revision_number"]
+        FreeCAD.Console.PrintMessage(f"  Pulling {child_pn} rev {rev_num}...\n")
+
+        try:
+            ok = _client._download_file(
+                child_pn, rev_num, str(dest_path), progress_callback=progress_callback
+            )
+            if ok:
+                pulled.append((child_pn, dest_path))
+        except Exception as e:
+            FreeCAD.Console.PrintWarning(f"  Failed to pull {child_pn}: {e}\n")
+
+        # Recurse into child (it may be a sub-assembly)
+        _pull_dependencies(child_pn, progress_callback)
+
+    return pulled
+
+
 class Silo_Pull:
     """Download from MinIO / sync from database."""
 
@@ -1007,14 +1120,18 @@ class Silo_Pull:
 
         if not has_any_file:
             if existing_local:
-                FreeCAD.Console.PrintMessage(f"Opening existing local file: {existing_local}\n")
+                FreeCAD.Console.PrintMessage(
+                    f"Opening existing local file: {existing_local}\n"
+                )
                 FreeCAD.openDocument(str(existing_local))
             else:
                 try:
                     item = _client.get_item(part_number)
                     new_doc = _sync.create_document_for_item(item, save=True)
                     if new_doc:
-                        FreeCAD.Console.PrintMessage(f"Created local file for {part_number}\n")
+                        FreeCAD.Console.PrintMessage(
+                            f"Created local file for {part_number}\n"
+                        )
                     else:
                         QtGui.QMessageBox.warning(
                             None,
@@ -1092,6 +1209,19 @@ class Silo_Pull:
 
         FreeCAD.Console.PrintMessage(f"Pulled revision {rev_num} of {part_number}\n")
 
+        # Pull assembly dependencies before opening so links resolve
+        if item.get("item_type") == "assembly":
+            progress.setLabelText(f"Pulling dependencies for {part_number}...")
+            progress.setValue(0)
+            progress.show()
+            dep_pulled = _pull_dependencies(part_number, progress_callback=on_progress)
+            progress.setValue(100)
+            progress.close()
+            if dep_pulled:
+                FreeCAD.Console.PrintMessage(
+                    f"Pulled {len(dep_pulled)} dependency file(s)\n"
+                )
+
         # Close existing document if open, then reopen
         if doc and doc.FileName == str(dest_path):
             FreeCAD.closeDocument(doc.Name)
@@ -1145,7 +1275,9 @@ class Silo_Push:
                             server_dt = datetime.fromisoformat(
                                 server_time_str.replace("Z", "+00:00")
                             )
-                            local_dt = datetime.fromtimestamp(local_mtime, tz=timezone.utc)
+                            local_dt = datetime.fromtimestamp(
+                                local_mtime, tz=timezone.utc
+                            )
                             if local_dt > server_dt:
                                 unuploaded.append(lf)
                         else:
@@ -1158,7 +1290,9 @@ class Silo_Push:
                 pass  # Not in DB, skip
 
         if not unuploaded:
-            QtGui.QMessageBox.information(None, "Push", "All local files are already uploaded.")
+            QtGui.QMessageBox.information(
+                None, "Push", "All local files are already uploaded."
+            )
             return
 
         msg = f"Found {len(unuploaded)} files to upload:\n\n"
@@ -1176,7 +1310,9 @@ class Silo_Push:
 
         uploaded = 0
         for item in unuploaded:
-            result = _sync.upload_file(item["part_number"], item["path"], "Synced from local")
+            result = _sync.upload_file(
+                item["part_number"], item["path"], "Synced from local"
+            )
             if result:
                 uploaded += 1
 
@@ -1225,9 +1361,7 @@ class Silo_Info:
             msg = f"<h3>{part_number}</h3>"
             msg += f"<p><b>Type:</b> {item.get('item_type', '-')}</p>"
             msg += f"<p><b>Description:</b> {item.get('description', '-')}</p>"
-            msg += (
-                f"<p><b>Projects:</b> {', '.join(project_codes) if project_codes else 'None'}</p>"
-            )
+            msg += f"<p><b>Projects:</b> {', '.join(project_codes) if project_codes else 'None'}</p>"
             msg += f"<p><b>Current Revision:</b> {item.get('current_revision', 1)}</p>"
             msg += f"<p><b>Local Revision:</b> {getattr(obj, 'SiloRevision', '-')}</p>"
 
@@ -1293,7 +1427,9 @@ class Silo_TagProjects:
         try:
             # Get current projects for item
             current_projects = _client.get_item_projects(part_number)
-            current_codes = {p.get("code", "") for p in current_projects if p.get("code")}
+            current_codes = {
+                p.get("code", "") for p in current_projects if p.get("code")
+            }
 
             # Get all available projects
             all_projects = _client.get_projects()
@@ -1404,7 +1540,9 @@ class Silo_Rollback:
             dialog.setMinimumHeight(300)
             layout = QtGui.QVBoxLayout(dialog)
 
-            label = QtGui.QLabel(f"Select a revision to rollback to (current: Rev {current_rev}):")
+            label = QtGui.QLabel(
+                f"Select a revision to rollback to (current: Rev {current_rev}):"
+            )
             layout.addWidget(label)
 
             # Revision table
@@ -1419,8 +1557,12 @@ class Silo_Rollback:
             for i, rev in enumerate(prev_revisions):
                 table.setItem(i, 0, QtGui.QTableWidgetItem(str(rev["revision_number"])))
                 table.setItem(i, 1, QtGui.QTableWidgetItem(rev.get("status", "draft")))
-                table.setItem(i, 2, QtGui.QTableWidgetItem(rev.get("created_at", "")[:10]))
-                table.setItem(i, 3, QtGui.QTableWidgetItem(rev.get("comment", "") or ""))
+                table.setItem(
+                    i, 2, QtGui.QTableWidgetItem(rev.get("created_at", "")[:10])
+                )
+                table.setItem(
+                    i, 3, QtGui.QTableWidgetItem(rev.get("comment", "") or "")
+                )
 
             table.resizeColumnsToContents()
             layout.addWidget(table)
@@ -1446,7 +1588,9 @@ class Silo_Rollback:
             def on_rollback():
                 selected = table.selectedItems()
                 if not selected:
-                    QtGui.QMessageBox.warning(dialog, "Rollback", "Please select a revision")
+                    QtGui.QMessageBox.warning(
+                        dialog, "Rollback", "Please select a revision"
+                    )
                     return
                 selected_rev[0] = int(table.item(selected[0].row(), 0).text())
                 dialog.accept()
@@ -1544,7 +1688,9 @@ class Silo_SetStatus:
             # Update status
             _client.update_revision(part_number, rev_num, status=status)
 
-            FreeCAD.Console.PrintMessage(f"Updated Rev {rev_num} status to '{status}'\n")
+            FreeCAD.Console.PrintMessage(
+                f"Updated Rev {rev_num} status to '{status}'\n"
+            )
             QtGui.QMessageBox.information(
                 None, "Status Updated", f"Revision {rev_num} status set to '{status}'"
             )
@@ -1608,7 +1754,9 @@ class Silo_Settings:
         ssl_checkbox.setChecked(param.GetBool("SslVerify", True))
         layout.addWidget(ssl_checkbox)
 
-        ssl_hint = QtGui.QLabel("Disable only for internal servers with self-signed certificates.")
+        ssl_hint = QtGui.QLabel(
+            "Disable only for internal servers with self-signed certificates."
+        )
         ssl_hint.setWordWrap(True)
         ssl_hint.setStyleSheet("color: #888; font-size: 11px;")
         layout.addWidget(ssl_hint)
@@ -1641,7 +1789,7 @@ class Silo_Settings:
             path, _ = QtGui.QFileDialog.getOpenFileName(
                 dialog,
                 "Select CA Certificate",
-                os.path.dirname(cert_input.text()) or "/etc/ssl/certs",
+                os.path.dirname(cert_input.text()) or os.path.expanduser("~"),
                 "Certificates (*.pem *.crt *.cer);;All Files (*)",
             )
             if path:
@@ -1885,7 +2033,9 @@ class Silo_BOM:
 
         wu_table = QtGui.QTableWidget()
         wu_table.setColumnCount(5)
-        wu_table.setHorizontalHeaderLabels(["Parent Part Number", "Type", "Qty", "Unit", "Ref Des"])
+        wu_table.setHorizontalHeaderLabels(
+            ["Parent Part Number", "Type", "Qty", "Unit", "Ref Des"]
+        )
         wu_table.setSelectionBehavior(QtGui.QAbstractItemView.SelectRows)
         wu_table.setSelectionMode(QtGui.QAbstractItemView.SingleSelection)
         wu_table.setEditTriggers(QtGui.QAbstractItemView.NoEditTriggers)
@@ -1914,12 +2064,16 @@ class Silo_BOM:
                 bom_table.setItem(
                     row, 1, QtGui.QTableWidgetItem(entry.get("child_description", ""))
                 )
-                bom_table.setItem(row, 2, QtGui.QTableWidgetItem(entry.get("rel_type", "")))
+                bom_table.setItem(
+                    row, 2, QtGui.QTableWidgetItem(entry.get("rel_type", ""))
+                )
                 qty = entry.get("quantity")
                 bom_table.setItem(
                     row, 3, QtGui.QTableWidgetItem(str(qty) if qty is not None else "")
                 )
-                bom_table.setItem(row, 4, QtGui.QTableWidgetItem(entry.get("unit") or ""))
+                bom_table.setItem(
+                    row, 4, QtGui.QTableWidgetItem(entry.get("unit") or "")
+                )
                 ref_des = entry.get("reference_designators") or []
                 bom_table.setItem(row, 5, QtGui.QTableWidgetItem(", ".join(ref_des)))
                 bom_table.setItem(
@@ -1941,12 +2095,16 @@ class Silo_BOM:
                 wu_table.setItem(
                     row, 0, QtGui.QTableWidgetItem(entry.get("parent_part_number", ""))
                 )
-                wu_table.setItem(row, 1, QtGui.QTableWidgetItem(entry.get("rel_type", "")))
+                wu_table.setItem(
+                    row, 1, QtGui.QTableWidgetItem(entry.get("rel_type", ""))
+                )
                 qty = entry.get("quantity")
                 wu_table.setItem(
                     row, 2, QtGui.QTableWidgetItem(str(qty) if qty is not None else "")
                 )
-                wu_table.setItem(row, 3, QtGui.QTableWidgetItem(entry.get("unit") or ""))
+                wu_table.setItem(
+                    row, 3, QtGui.QTableWidgetItem(entry.get("unit") or "")
+                )
                 ref_des = entry.get("reference_designators") or []
                 wu_table.setItem(row, 4, QtGui.QTableWidgetItem(", ".join(ref_des)))
             wu_table.resizeColumnsToContents()
@@ -1999,7 +2157,9 @@ class Silo_BOM:
                 try:
                     qty = float(qty_text)
                 except ValueError:
-                    QtGui.QMessageBox.warning(dialog, "BOM", "Quantity must be a number.")
+                    QtGui.QMessageBox.warning(
+                        dialog, "BOM", "Quantity must be a number."
+                    )
                     return
 
             unit = unit_input.text().strip() or None
@@ -2078,7 +2238,9 @@ class Silo_BOM:
                 try:
                     new_qty = float(qty_text)
                 except ValueError:
-                    QtGui.QMessageBox.warning(dialog, "BOM", "Quantity must be a number.")
+                    QtGui.QMessageBox.warning(
+                        dialog, "BOM", "Quantity must be a number."
+                    )
                     return
 
             new_unit = unit_input.text().strip() or None
@@ -2102,7 +2264,9 @@ class Silo_BOM:
                 )
                 load_bom()
             except Exception as exc:
-                QtGui.QMessageBox.warning(dialog, "BOM", f"Failed to update entry:\n{exc}")
+                QtGui.QMessageBox.warning(
+                    dialog, "BOM", f"Failed to update entry:\n{exc}"
+                )
 
         def on_remove():
             selected = bom_table.selectedItems()
@@ -2128,7 +2292,9 @@ class Silo_BOM:
                 _client.delete_bom_entry(part_number, child_pn)
                 load_bom()
             except Exception as exc:
-                QtGui.QMessageBox.warning(dialog, "BOM", f"Failed to remove entry:\n{exc}")
+                QtGui.QMessageBox.warning(
+                    dialog, "BOM", f"Failed to remove entry:\n{exc}"
+                )
 
         add_btn.clicked.connect(on_add)
         edit_btn.clicked.connect(on_edit)
@@ -2167,7 +2333,9 @@ class SiloEventListener(QtCore.QThread):
 
     item_updated = QtCore.Signal(str)  # part_number
     revision_created = QtCore.Signal(str, int)  # part_number, revision
-    connection_status = QtCore.Signal(str, int, str)  # (status, retry_count, error_message)
+    connection_status = QtCore.Signal(
+        str, int, str
+    )  # (status, retry_count, error_message)
     server_mode_changed = QtCore.Signal(str)  # "normal" / "read-only" / "degraded"
 
     _MAX_RETRIES = 10
@@ -2241,7 +2409,9 @@ class SiloEventListener(QtCore.QThread):
         req = urllib.request.Request(url, headers=headers, method="GET")
 
         try:
-            self._response = urllib.request.urlopen(req, context=_get_ssl_context(), timeout=90)
+            self._response = urllib.request.urlopen(
+                req, context=_get_ssl_context(), timeout=90
+            )
         except urllib.error.HTTPError as e:
             if e.code in (404, 501):
                 raise _SSEUnsupported()
@@ -2522,7 +2692,9 @@ class SiloAuthDockWidget:
             self._sse_label.setToolTip("")
             FreeCAD.Console.PrintMessage("Silo: SSE connected\n")
         elif status == "disconnected":
-            self._sse_label.setText(f"Reconnecting ({retry}/{SiloEventListener._MAX_RETRIES})...")
+            self._sse_label.setText(
+                f"Reconnecting ({retry}/{SiloEventListener._MAX_RETRIES})..."
+            )
             self._sse_label.setStyleSheet("font-size: 11px; color: #FF9800;")
             self._sse_label.setToolTip(error or "Connection lost")
             FreeCAD.Console.PrintWarning(
@@ -2532,7 +2704,9 @@ class SiloAuthDockWidget:
             self._sse_label.setText("Disconnected")
             self._sse_label.setStyleSheet("font-size: 11px; color: #F44336;")
             self._sse_label.setToolTip(error or "Max retries reached")
-            FreeCAD.Console.PrintError(f"Silo: SSE gave up after {retry} retries: {error}\n")
+            FreeCAD.Console.PrintError(
+                f"Silo: SSE gave up after {retry} retries: {error}\n"
+            )
         elif status == "unsupported":
             self._sse_label.setText("Not available")
             self._sse_label.setStyleSheet("font-size: 11px; color: #888;")
@@ -2574,10 +2748,14 @@ class SiloAuthDockWidget:
         self._refresh_activity_panel()
 
     def _on_remote_revision(self, part_number, revision):
-        FreeCAD.Console.PrintMessage(f"Silo: New revision {revision} for {part_number}\n")
+        FreeCAD.Console.PrintMessage(
+            f"Silo: New revision {revision} for {part_number}\n"
+        )
         mw = FreeCADGui.getMainWindow()
         if mw is not None:
-            mw.statusBar().showMessage(f"Silo: {part_number} rev {revision} available", 5000)
+            mw.statusBar().showMessage(
+                f"Silo: {part_number} rev {revision} available", 5000
+            )
         self._refresh_activity_panel()
 
     def _refresh_activity_panel(self):
@@ -2643,7 +2821,9 @@ class SiloAuthDockWidget:
                     rev_part = f" \u2013 Rev {rev_num}" if rev_num else ""
                     date_part = f" \u2013 {updated}" if updated else ""
                     local_badge = " \u25cf local" if pn in local_pns else ""
-                    line1 = f"{pn} \u2013 {desc_display}{rev_part}{date_part}{local_badge}"
+                    line1 = (
+                        f"{pn} \u2013 {desc_display}{rev_part}{date_part}{local_badge}"
+                    )
 
                     if comment:
                         line1 += f'\n  "{comment}"'
@@ -3099,7 +3279,9 @@ class Silo_StartPanel:
         dock = QtGui.QDockWidget("Silo", mw)
         dock.setObjectName("SiloStartPanel")
         dock.setWidget(content.widget)
-        dock.setAllowedAreas(QtCore.Qt.LeftDockWidgetArea | QtCore.Qt.RightDockWidgetArea)
+        dock.setAllowedAreas(
+            QtCore.Qt.LeftDockWidgetArea | QtCore.Qt.RightDockWidgetArea
+        )
         mw.addDockWidget(QtCore.Qt.LeftDockWidgetArea, dock)
 
     def IsActive(self):
@@ -3133,7 +3315,9 @@ class _DiagWorker(QtCore.QThread):
             self.result.emit("DNS", False, "no hostname in URL")
             return
         try:
-            addrs = socket.getaddrinfo(hostname, None, socket.AF_UNSPEC, socket.SOCK_STREAM)
+            addrs = socket.getaddrinfo(
+                hostname, None, socket.AF_UNSPEC, socket.SOCK_STREAM
+            )
             first_ip = addrs[0][4][0] if addrs else "?"
             self.result.emit("DNS", True, f"{hostname} -> {first_ip}")
         except socket.gaierror as e: