fix(deploy): make seed-data.sh recursive for directory entries

The Restreamer UI bundle includes subdirectories (_player,
_playersite, static, locales) and the Dockerfile copies the whole
tree into /core/static. seed-data.sh on first boot was using flat
'cp -p' which errors on directories with 'omitting directory ...';
set -e then exits, the container restarts forever in a crash loop,
and Core never starts.

Fix: 'cp -Rp' so directories are copied as trees. The no-clobber
check on the top-level name still keeps operator-edited content
safe — if /core/data/_player exists we don't replace it, even if
its internals diverge from the bundled version.

Also defends against dotfiles via the second glob.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

deploy/truenas/core/seed-data.sh

@@ -23,11 +23,15 @@ if [ ! -d "$DST" ]; then
     mkdir -p "$DST"
 fi
 
-for f in "$SRC"/*; do
+# Iterate over both files and directories. The Restreamer UI bundle
+# ships subdirectories (_player, _playersite, static) so this needs
+# the recursive flag; the no-clobber check on the top-level name keeps
+# operator-edited content safe.
+for f in "$SRC"/* "$SRC"/.[!.]*; do
     [ -e "$f" ] || continue
     name=$(basename "$f")
     if [ ! -e "$DST/$name" ]; then
-        cp -p "$f" "$DST/$name"
+        cp -Rp "$f" "$DST/$name"
         echo "seed-data: copied $name -> $DST/$name"
     fi
 done