env: add openrouter

Author: Tim Heinsohn

zsh/environment

@@ -31,6 +31,8 @@ if [ -f "/usr/bin/gopass" ]; then
   export ANTHROPIC_API_KEY
   DEEPSEEK_API_KEY=$(gopass show t/ai/deepseek/api-key)
   export DEEPSEEK_API_KEY
+  OPENROUTER_API_KEY=$(gopass show -o t/ai/openrouter.ai)
+  export OPENROUTER_API_KEY
 fi
 
 export REDIS_URL=redis://localhost:6379