Add Leaflet interactive map, tile generator compose, auto-sync cache, deploy docs

index.py rewritten as a continuous Leaflet map: rotated L93 tiles, stackable
visualization layers (per-layer opacity, drag-reorder persisted in
localStorage), tile info panel, live rebuild after each tile during a run.
Leaflet is vendored in assets/vendor/ so the map works fully offline;
georeferencing falls back rasterio -> pyproj -> affine so the lightweight
webapp (no GDAL) is supported.

docker-compose.worker.yml adds the tile generator service (full image + GPU)
that remote webapps call via LIDAR_GENERATION_URL, plus a one-shot process
profile. webapp.py gains LIDAR_AUTO_SYNC_SECONDS periodic cache refresh and
LIDAR_REGEN_CIDR restricting generation to the local network. run.sh
--serve-webapp now mounts ~/.ssh read-only so the rsync sync works.

docs/DEPLOY_WEBAPP.md completed for Raspberry Pi deployment: prerequisites,
git clone install, SSH key setup, first sync, update procedure and
troubleshooting.

setup.py

@@ -6,6 +6,11 @@ setup(
     version='2.0.0',
     description='Pipeline LiDAR pour détection archéologique',
     packages=find_packages(),
+    package_data={'lidar_pipeline': [
+        'assets/vendor/*',
+        'assets/vendor/leaflet/*',
+        'assets/vendor/leaflet/images/*',
+    ]},
     python_requires='>=3.8',
     entry_points={
         'console_scripts': [