safety, glbs now have no sanitizing of file names; png & webP conversions work

web/batch_glb_png/link_glbs.sh

@@ -2,12 +2,34 @@
 # 20260228 ChatGPT
 # $Header$
 #
+# This script creates links from the staging directory to
+# the glbs sibling directory.  The staging directory is where the glbs are staged for rendering.  
+# The glbs sibling directory is where the PNG & webP batch renderer expects to find the glbs.  The files names
+# are sanitized to be filesystem safe and to avoid collisions by adding the path components 
+# delimited by double underscores.  
+
+# If a collision is detected, a numeric suffix is added to disambiguate.
+# Consequently, the name of the link is not the same as the original glb, but contains the original path 
+# components in a sanitized form.  This allows the batch renderer to process all the glbs without worrying 
+# about name collisions, while still retaining some traceability to the original files.
+#
+# For example, if the staging directory contains:
+#   /home/jlpoole/work/Voron/test1/Klicky-Probe/Printers/Voron/v1.8_v2.4_Legacy_Trident/v1.8_v2.4_Legacy_Trident_STL/Dock_mount_fixed_v2.glb
+# then this script will create the very long file name:
+#   glbs/Klicky-Probe__Printers__Voron__...__Dock_mount_fixed_v2.stl.glb
+#
+# Note: the brackets in a file name, e.g. "[a]" are preserved.
+# Another example, if the staging directory contains:
+#    /home/jlpoole/work/Voron/test1/Voron/Skirts/[a]_belt_guard_a_x2.stl.glb
+# then this script will create the file name:
+#   'Voron-2__STLs__Skirts__[a]_belt_guard_a_x2.stl.glb'
+#
 # Copy/paste:
 #   cd ~/work/Voron/renderlab/web/batch_glb_png
 #   chmod +x link_glbs.sh
 #   ./link_glbs.sh /home/jlpoole/work/Voron/test1
 #
-# This creates symlinks under ./glbs/ pointing to every *.glb under ROOT.
+# This creates symlinks under ./glbs/ pointing to every *.glb under the staging directory.
 
 set -eu
 
@@ -39,8 +61,9 @@ sanitize() {
   # shellcheck disable=SC2001
   echo "$1" \
   | sed 's|^/||' \
-  | sed 's|/|__|g' \
-  | sed 's|[^A-Za-z0-9._-]|_|g'
+  | sed 's|/|__|g'
+  #| sed 's|/|__|g' \
+  #| sed 's|[^A-Za-z0-9._-]|_|g'
 }
 
 count=0