Add IGN LiDAR HD merged COPC: Porge burn scar (Gironde, 2026 fire)

814 IGN LiDAR HD 1 km tiles (campaign FN_2025-07-29) merged into a single COPC.

Area: Le Porge / Saumos burn scar, Gironde, buffered 2 km beyond the EFFIS
perimeter of the July 2026 fire. 824 km2, Lambert-93 (EPSG:2154).
Acquired ~1 year BEFORE the fire, so this is a pre-fire baseline.

20,579,329,436 points, 222,964 nodes, LAS 1.4 point format 6.
Note: 4,185 points (0.00002%) fewer than the sum of the source tile headers,
from the point-level polygon crop; not re-run at time of upload.

Source: IGN LiDAR HD, Licence Ouverte / Open Licence (Etalab).
Merged with lazetc copc-merge.

.gitattributes

@@ -59,3 +59,4 @@ saved_model/**/* filter=lfs diff=lfs merge=lfs -text
 *.mp4 filter=lfs diff=lfs merge=lfs -text
 *.webm filter=lfs diff=lfs merge=lfs -text
 copernicus_world_30m_lerc.cog.tif filter=lfs diff=lfs merge=lfs -text
+ignlidarhd_porge_burnscar.copc.laz filter=lfs diff=lfs merge=lfs -text

ignlidarhd_porge_burnscar.copc.laz

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:65bd149343df5f04e15e30d53f5c69f94f8137f2e82e1a72f43e9be523f95186
+size 139635288965