refactor(uninstall): enhance login item removal and brew UI

- Escape quotes/backslashes in app names for AppleScript safety
- Silence osascript stdout to prevent output noise
- Capture brew uninstall output to avoid spinner corruption
- Log brew errors to debug_log for troubleshooting

lib/uninstall/batch.sh

@@ -104,7 +104,11 @@ remove_login_item() {
 
     # Remove from Login Items using index-based deletion (handles broken items)
     if [[ -n "$clean_name" ]]; then
-        osascript <<- EOF 2> /dev/null || true
+        # Escape double quotes and backslashes for AppleScript
+        local escaped_name="${clean_name//\\/\\\\}"
+        escaped_name="${escaped_name//\"/\\\"}"
+
+        osascript <<- EOF > /dev/null 2>&1 || true
 			tell application "System Events"
 			    try
 			        set itemCount to count of login items
@@ -112,7 +116,7 @@ remove_login_item() {
 			        repeat with i from itemCount to 1 by -1
 			            try
 			                set itemName to name of login item i
-			                if itemName is "$clean_name" then
+			                if itemName is "$escaped_name" then
 			                    delete login item i
 			                end if
 			            end try

lib/uninstall/brew.sh

@@ -175,9 +175,12 @@ brew_uninstall_cask() {
 
     # Run uninstall with timeout (suppress hints/auto-update)
     local uninstall_ok=false
-    if HOMEBREW_NO_ENV_HINTS=1 HOMEBREW_NO_AUTO_UPDATE=1 NONINTERACTIVE=1 \
-        run_with_timeout 120 brew uninstall --cask "$cask_name" 2>&1; then
+    local output
+    if output=$(HOMEBREW_NO_ENV_HINTS=1 HOMEBREW_NO_AUTO_UPDATE=1 NONINTERACTIVE=1 \
+        run_with_timeout 120 brew uninstall --cask "$cask_name" 2>&1); then
         uninstall_ok=true
+    else
+        debug_log "brew uninstall output: $output"
     fi
 
     # Verify removal