Enhance .zshrc to detect AI coding agent sessions and adjust prompt theme accordingly, improving user experience in different environments.

Author: FridrichMethod

common/zsh/.zshrc

@@ -15,10 +15,15 @@ esac
 # Should be set at the very top of interactive session settings
 stty -ixon
 
+# Detect AI coding agent sessions that conflict with heavy prompt themes
+_is_agent_session() {
+    [[ -n "$CURSOR_AGENT" || -n "$GEMINI_CLI" ]]
+}
+
 # Enable Powerlevel10k instant prompt. Should stay close to the top of ~/.zshrc.
 # Initialization code that may require console input (password prompts, [y/n]
 # confirmations, etc.) must go above this block; everything else may go below.
-if [[ -r "${XDG_CACHE_HOME:-$HOME/.cache}/p10k-instant-prompt-$(print -P %n).zsh" ]]; then
+if ! _is_agent_session && [[ -r "${XDG_CACHE_HOME:-$HOME/.cache}/p10k-instant-prompt-$(print -P %n).zsh" ]]; then
     source "${XDG_CACHE_HOME:-$HOME/.cache}/p10k-instant-prompt-$(print -P %n).zsh"
 fi
 
@@ -52,7 +57,11 @@ ZSH_DISABLE_COMPFIX=true
 # load a random theme each time Oh My Zsh is loaded, in which case,
 # to know which specific one was loaded, run: echo $RANDOM_THEME
 # See https://github.com/ohmyzsh/ohmyzsh/wiki/Themes
-ZSH_THEME="powerlevel10k/powerlevel10k"
+if _is_agent_session; then
+    ZSH_THEME="robbyrussell"
+else
+    ZSH_THEME="powerlevel10k/powerlevel10k"
+fi
 
 ENABLE_CORRECTION="true"
 COMPLETION_WAITING_DOTS="true"
@@ -160,4 +169,4 @@ fi
 zstyle ':completion:*' special-dirs false
 
 # To customize prompt, run `p10k configure` or edit ~/.p10k.zsh.
-[[ ! -f ~/.p10k.zsh ]] || source ~/.p10k.zsh
+! _is_agent_session && [[ -f ~/.p10k.zsh ]] && source ~/.p10k.zsh