Fix dangerous pkill, circular import, and dedup _res_suffix

- Scope pkill to 'pdal pipeline' (avoids killing unrelated PDAL jobs)
- Inline _strip_lidar_ext in dtm.py to remove circular import from pipeline
- _res_suffix_str now delegates to LidarArchaeoPipeline._res_suffix

lidar_pipeline/cli.py

@@ -396,8 +396,10 @@ def main():
 def _kill_orphan_pdal(signum=None, frame=None):
     """Kill orphan PDAL processes on interrupt or exit."""
     import subprocess
+    # Belt-and-suspenders: os.killpg below is the primary mechanism.
+    # This handles the edge case where a child escapes the process group.
     try:
-        subprocess.run(["pkill", "-9", "-f", "pdal"], capture_output=True, timeout=3)
+        subprocess.run(["pkill", "-9", "-f", "pdal pipeline"], capture_output=True, timeout=3)
     except Exception:
         pass
     if signum is not None:

lidar_pipeline/dtm.py

@@ -31,6 +31,15 @@ IGN_CLASS_NAMES = {
 }
 
 
+def _strip_lidar_ext(path):
+    """Extract base name from a LAZ/LAS file (mirrors pipeline._file_basename)."""
+    name = Path(path).name
+    for ext in ('.copc.laz', '.copc.las', '.laz', '.las'):
+        if name.lower().endswith(ext):
+            return name[:-len(ext)]
+    return Path(path).stem
+
+
 def parse_ign_classes(spec):
     """Convertit une liste de classes IGN (noms ou codes) en codes LAS triés.
 
@@ -462,9 +471,7 @@ def classify_ground(laz_file, temp_dir, method='auto', force=False, ign_classes=
     ign_codes = parse_ign_classes(ign_classes) if method == 'ign' else None
     method_label = ign_method_label(ign_codes) if ign_codes else method
 
-    # Use shared basename extraction function
-    from .pipeline import _file_basename
-    laz_base = _file_basename(laz_file)
+    laz_base = _strip_lidar_ext(laz_file)
 
     output_las = temp_dir / f"{laz_base}_ground_{method_label}.las"
 

lidar_pipeline/index.py

@@ -161,10 +161,9 @@ def _strip_res_suffix(dirname):
 
 
 def _res_suffix_str(resolution):
-    """Suffixe de nommage d'une résolution (miroir de pipeline._res_suffix)."""
-    if resolution == 0.5:
-        return ''
-    return '_r' + f'{resolution}'.replace('.', 'p')
+    """Suffixe de nommage d'une résolution (délègue à pipeline._res_suffix)."""
+    from .pipeline import LidarArchaeoPipeline
+    return LidarArchaeoPipeline._res_suffix(resolution)
 
 
 def scan_tiles(vis_dir):