fixed spellcheck and minor issues for release

profile.d/rain.sh

@@ -37,6 +37,7 @@
 load_conf "rain"
 
 # Common helpers, then the ones private to this module (helpers/rain.sh)
+# shellcheck source=../helpers/common.sh
 declare -F _profile_load_helpers >/dev/null || . "$(dirname -- "${BASH_SOURCE[0]}")/../helpers/common.sh"
 _profile_load_helpers "${BASH_SOURCE[0]}"
 
@@ -312,6 +313,7 @@ rainbow()
     local use_truecolor=0
     local offset=0 row=0 col=0 palette_width=0 idx=0
     local row_line="" screen="" ch=""
+    # shellcheck disable=SC2034 # used by _rain_enter/_rain_leave (dynamic scoping)
     local saved_stty="" saved_traps=""
 
     # WINCH handler (and initial sizing): rebuild the palette for the new width