FIX: Revert for-loop in auto-clear to explicit if statements

- for loop was causing slowdown in startup_detection()
- Split into two explicit cache file checks instead
- Maintains support for both .sysref and .sysref.beta
- Restores instant startup speed

launcher.sh

@@ -691,17 +691,18 @@ init_directories() {
 startup_detection() {
     # Auto-clear cache if toolkit files are newer (fresh git pull)
     # This ensures users always get fresh data after git updates
-    # Handle both production (.sysref) and dev (.sysref.beta) cache names
-    local cache_file
-    for cache_file in "$BASE_DIR/.sysref.beta" "$BASE_DIR/.sysref"; do
-        if [ -f "$cache_file" ] && [ -f "$BASE_DIR/launcher.sh" ]; then
-            # If launcher.sh is newer than cache, it means git just pulled updates
-            # and we should rebuild cache with current code
-            if [ "$BASE_DIR/launcher.sh" -nt "$cache_file" ]; then
-                rm -f "$cache_file" "${cache_file}.timestamp" 2>/dev/null || true
-            fi
+    if [ -f "$BASE_DIR/.sysref.beta" ] && [ -f "$BASE_DIR/launcher.sh" ]; then
+        if [ "$BASE_DIR/launcher.sh" -nt "$BASE_DIR/.sysref.beta" ]; then
+            rm -f "$BASE_DIR/.sysref.beta" "$BASE_DIR/.sysref.beta.timestamp" 2>/dev/null || true
         fi
-    done
+    fi
+
+    # Also check production cache name for backward compatibility
+    if [ -f "$BASE_DIR/.sysref" ] && [ -f "$BASE_DIR/launcher.sh" ]; then
+        if [ "$BASE_DIR/launcher.sh" -nt "$BASE_DIR/.sysref" ]; then
+            rm -f "$BASE_DIR/.sysref" "$BASE_DIR/.sysref.timestamp" 2>/dev/null || true
+        fi
+    fi
 
     # Initialize system detection first (required for show_system_overview)
     if [ -z "${SYS_DETECTION_COMPLETE:-}" ]; then