Fix basename: retirer .copc.laz au lieu de .laz seul

Les fichiers LiDAR HD IGN ont l'extension .copc.laz (double extension).
Path.stem ne retire que .laz, laissant .copc dans le basename.
Ajout de _file_basename() qui retire les extensions connues
dans l'ordre: .copc.laz, .copc.las, .laz, .las.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

lidar_pipeline/dtm.py

@@ -218,7 +218,14 @@ def classify_ground(laz_file, temp_dir, method='auto', force=False):
     else:
         logger.info(f"  Classification sol: {method.upper()} (forcé)")
 
-    output_las = temp_dir / f"{laz_file.stem}_ground_{method}.las"
+    # Strip all known LiDAR extensions (.copc.laz, .laz, .las)
+    laz_base = laz_file.name
+    for ext in ['.copc.laz', '.copc.las', '.laz', '.las']:
+        if laz_base.lower().endswith(ext):
+            laz_base = laz_base[:-len(ext)]
+            break
+
+    output_las = temp_dir / f"{laz_base}_ground_{method}.las"
 
     if output_las.exists() and not force:
         logger.info(f"  Classification {method.upper()} déjà effectuée — fichier existant réutilisé")

lidar_pipeline/pipeline.py

@@ -24,6 +24,20 @@ except RuntimeError:
 logger = logging.getLogger("lidar")
 
 
+def _file_basename(path):
+    """Extract base name from a LAZ/LAS file, removing all known extensions.
+
+    Handles double extensions like .copc.laz correctly:
+    'file.copc.laz' -> 'file', not 'file.copc'
+    """
+    name = Path(path).name
+    # Remove known LiDAR extensions (order matters: longest first)
+    for ext in ['.copc.laz', '.copc.las', '.laz', '.las']:
+        if name.lower().endswith(ext):
+            return name[:-len(ext)]
+    return Path(path).stem
+
+
 class FilePrefixFilter(logging.Filter):
     """Adds a file prefix to log messages when processing a specific file."""
     def __init__(self):
@@ -208,7 +222,7 @@ class LidarArchaeoPipeline:
 
     def process_file(self, laz_file):
         """Process a single LAZ file through the full pipeline."""
-        basename = laz_file.stem
+        basename = _file_basename(laz_file)
         _file_filter.basename = basename
         t_start = time.time()
 
@@ -358,7 +372,7 @@ def _process_file_standalone(laz_file_str, input_dir, output_dir, resolution, fo
     worker_logger.addFilter(_file_filter)
 
     pipeline = LidarArchaeoPipeline(input_dir, output_dir, resolution=resolution, workers=1, force=force, ground_method=ground_method, force_classify=force_classify)
-    basename = Path(laz_file_str).stem
+    basename = _file_basename(laz_file_str)
     pipeline.temp_dir = pipeline.output_dir / f"temp_{basename}"
     pipeline.temp_dir.mkdir(exist_ok=True)
     laz_file = Path(laz_file_str)