fix: unused variables, syntax errors, and import warnings reported by Shellcheck

Author: maruf-pfc

src/core/self_update.sh

@@ -22,7 +22,7 @@ check_for_updates() {
     local LOCAL
     local REMOTE
     LOCAL=$(git rev-parse HEAD)
-    REMOTE=$(git rev-parse @{u})
+    REMOTE=$(git rev-parse "@{u}")
 
     if [[ "$LOCAL" != "$REMOTE" ]]; then
         return 0 # Update available

src/core/state.sh

@@ -3,8 +3,7 @@
 # Placeholder for state management
 # In Bash, state is mostly environment variables or temp files
 
-declare -A SELECTED_TASKS
-
 reset_state() {
-    SELECTED_TASKS=()
+    # Placeholder
+    : 
 }

src/core/tui.sh

@@ -1,37 +1,38 @@
 #!/usr/bin/env bash
 
 # Colors
-COLOR_PRIMARY="99"   # Purpleish
-COLOR_SECONDARY="212" # Pinkish
-COLOR_ACCENT="50"    # Cyan/Teal
-COLOR_MUTED="240"    # Grey
+export COLOR_PRIMARY="99"   # Purpleish
+export COLOR_SECONDARY="212" # Pinkish
+export COLOR_ACCENT="50"    # Cyan/Teal
+export COLOR_MUTED="240"    # Grey
 
 # Layout Constants
-SIDEBAR_WIDTH=25
+export SIDEBAR_WIDTH=25
 
 # @description Draw the Tabbed Header
 # @arg $1 active_tab Name of the active tab (cleanup|updates|maintenance|info)
 draw_header() {
     local active_tab=$1
-    local tab_cleanup="Cleanup"
+    
+    # Responsive width check
+    local label_cleanup="Cleanup"
+    if [[ $(tput cols) -lt 80 ]]; then
+        label_cleanup="Clean"
+    fi
+
+    local tab_cleanup="$label_cleanup"
     local tab_updates="Updates menu"
     local tab_maint="Maintenance"
     local tab_info="Stats"
 
     # Highlight active
     case $active_tab in
-        "cleanup") tab_cleanup=$(gum style --foreground "$COLOR_SECONDARY" --bold " [ Cleanup ] ") ;;
+        "cleanup") tab_cleanup=$(gum style --foreground "$COLOR_SECONDARY" --bold " [ $label_cleanup ] ") ;;
         "updates") tab_updates=$(gum style --foreground "$COLOR_SECONDARY" --bold " [ Updates ] ") ;;
         "maintenance") tab_maint=$(gum style --foreground "$COLOR_SECONDARY" --bold " [ Maintenance ] ") ;;
         "info") tab_info=$(gum style --foreground "$COLOR_SECONDARY" --bold " [ Stats ] ") ;;
     esac
 
-    # Responsive width check
-    local clean_label="System Cleanup"
-    if [[ $(tput cols) -lt 80 ]]; then
-        clean_label="Clean"
-    fi
-
     local header_text
     header_text=$(gum join --horizontal "  $tab_cleanup" "  $tab_updates" "  $tab_maint" "  $tab_info")
 

src/modules/cleanup/main.sh

@@ -1,11 +1,17 @@
 #!/usr/bin/env bash
 
 # Source sibling scripts
+# shellcheck disable=SC1091
 source "${MODULES_DIR}/cleanup/apt.sh"
+# shellcheck disable=SC1091
 source "${MODULES_DIR}/cleanup/docker.sh"
+# shellcheck disable=SC1091
 source "${MODULES_DIR}/cleanup/logs.sh"
+# shellcheck disable=SC1091
 source "${MODULES_DIR}/cleanup/ide.sh"
+# shellcheck disable=SC1091
 source "${MODULES_DIR}/cleanup/dev.sh"
+# shellcheck disable=SC1091
 source "${MODULES_DIR}/cleanup/system.sh"
 
 run_cleanup_menu() {