How to fix Apps.app and Spotlight stuck in dark mode on MacBook Air M5 with macOS 27.2?

Thank you for your response. I just ran it in the Terminal but got an error. Error: Could not find key 'AppleInterfaceStyleSwitchesAutomatically' in domain 'kCFPreferencesAnyApplication'.

Defaults have not been changed.

I restarted the computer in save mode to check, the issue still persists. I don't think the issue was caused by something installed. Actually I accidentally removed the Apps.app from the dock, I wanted to restore it back to the dock but mistakenly dragged the entire applications folder instead of the Apps.app to the dock. Later I removed the applications folder from the dock and restored the Apps.app back to the dock. After these operations, the Apps.app was changed to the dark mode, also, it looked a little bit different, the search area was separated from the apps area. I also asked AI for help. As per AI's responses, In macOS Tahoe, Apple replaced the traditional Launchpad with a new built-in interface called Apps.app. Because this application launcher is deeply integrated as a "browse mode" sub-component of the upgraded Spotlight system, it does not maintain its own isolated preference file. Its settings, history, and configuration preferences are located inside the main user Spotlight preference file within your profile. ~/Library/Preferences/com.apple.Spotlight.plist. I also tried deleting my profile's com.apple.Spotlight.plist file hoping the system will automatically generate a fresh, uncorrupted version by running these commands "defaults delete com.apple.Spotlight; killall cfprefsd" but it didn't work, the issue still persists. I also tried other ways as per AI, such as Check for a Dark Mode "Override" Key; Clear the Whole Spotlight UI Domain; Clear the Local Layout and Window State Cache; Importing the test account's .GlobalPreferences.plist file; Wipe the Profile's Appearance Triggers; Reset the System Overlay Cache; Clear the Spotlight UI Asset Cache "rm -rf ~/Library/Caches/com.apple.Spotlight; rm -rf ~/Library/Caches/com.apple.spotlightUI", etc... after trying all this, the issue still persists. I think the settings of the appearance of the Apps.app with the Spotlight must in some files under my main account profile. If I know this/these file(s) and reset it/them, I think the issue could be fixed.