Report progress of the surface and CSG phases

This adds a progress line to the two remaining silent phases of o2-cad-to-tgeo.

- Exact-surface extraction reports how many leaf solids are done, with an ETA.
- The CSG cascade prefixes each part with its position in the run.
- On the ALICE 3 stave the CSG cascade is now the slowest phase, at about 20 s of
  24 s; it is still serial.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

Author: sawenzel

Detectors/CADSupport/tools/O2_CADtoTGeo.py

@@ -4546,7 +4546,10 @@ def emit_root_macro(
         brep_files: Dict[str, str] = {}  # def_lid -> absolute path of brep_*.brep (--dump-brep)
         failures: Dict[str, List[str]] = {}  # def_lid -> unsupported-face reasons
         extracted: Dict[str, int] = {}   # def_lid -> number of surface records written
-        for lid, shape in def_shapes.items():
+        t_extract = time.time()
+        extract_label = f"Extracting exact surfaces from {len(def_shapes)} leaf solid(s)"
+        for i_leaf, (lid, shape) in enumerate(def_shapes.items()):
+            _print_progress(extract_label, i_leaf + 1, len(def_shapes), t_extract)
             surfaces, reasons, n_model_edges = extract_surfaces_for_shape(
                 shape, scale_to_cm, recognize_surfaces=recognize_flag, recognition=recognition,
                 lid=lid)

Detectors/CADSupport/tools/cadsupport/hook.py

@@ -68,8 +68,11 @@ def recognise_and_emit(def_shapes, def_names, scale_to_cm, out_folder, sanitize_
     csg_files = {}
     flat_files = {}
     records = []
-    for lid, shape in def_shapes.items():
+    n_parts = len(def_shapes)
+    for i_part, (lid, shape) in enumerate(def_shapes.items()):
         display = def_names.get(lid, "")
+        if verbose:
+            print(f"  [{i_part + 1}/{n_parts}]", end=" ", flush=True)
         volname = sanitize_filename(display) if display else "vol"
         suffix = f"{volname}_{sanitize_filename(lid)}"
         solid = scaled[lid] if scaled and lid in scaled else scaled_to_cm(shape, scale_to_cm)