style(claude_desktop): use explicit if for the null path guard (SC2015)

Codacy flagged the `A && B || continue` short-circuit pattern in the three
tokensave path loops; rewrite it as an explicit if so the fallback can never
run when both tests pass.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01KN8i26JrKSaBdvTrpVEyQ6

claude_desktop/rootfs/etc/cont-init.d/81-tokensave_repositories.sh

@@ -11,7 +11,9 @@ declare -A REPOS_SEEN=()
 while IFS= read -r configured_path; do
     configured_path="${configured_path#"${configured_path%%[![:space:]]*}"}"
     configured_path="${configured_path%"${configured_path##*[![:space:]]}"}"
-    [ -n "$configured_path" ] && [ "$configured_path" != "null" ] || continue
+    if [ -z "$configured_path" ] || [ "$configured_path" = "null" ]; then
+        continue
+    fi
 
     case "$configured_path" in
         /*) ;;

claude_desktop/rootfs/etc/cont-init.d/82-claude_tools.sh

@@ -171,7 +171,9 @@ if $TOKENSAVE_ENABLED; then
         # Trim surrounding whitespace while preserving spaces inside paths.
         configured_path="${configured_path#"${configured_path%%[![:space:]]*}"}"
         configured_path="${configured_path%"${configured_path##*[![:space:]]}"}"
-        [ -n "$configured_path" ] && [ "$configured_path" != "null" ] || continue
+        if [ -z "$configured_path" ] || [ "$configured_path" = "null" ]; then
+            continue
+        fi
 
         case "$configured_path" in
             /*) ;;

claude_desktop/rootfs/usr/local/bin/claude-tools-doctor.sh

@@ -150,7 +150,9 @@ if bashio::config.true 'install_tokensave'; then
     tokensave doctor --agent claude || true
     tokensave gain --all --range 30d || true
     while IFS= read -r configured_path; do
-        [ -n "$configured_path" ] && [ "$configured_path" != "null" ] || continue
+        if [ -z "$configured_path" ] || [ "$configured_path" = "null" ]; then
+            continue
+        fi
         repo_root="$(s6-setuidgid abc env HOME="$HOME" git -c safe.directory='*' -C "$configured_path" rev-parse --show-toplevel 2> /dev/null || true)"
         if [ -z "$repo_root" ]; then
             echo "${configured_path}: not a Git repository"