Feat: Let system variables appear in operator prompts #3221 (#8154)

### What problem does this PR solve?
Feat: Let system variables appear in operator prompts #3221

### Type of change


- [x] New Feature (non-breaking change which adds functionality)

web/src/constants/agent.ts

@@ -20,3 +20,10 @@ async function main(args) {
 module.exports = { main };
 `,
 };
+
+export enum AgentGlobals {
+  SysQuery = 'sys.query',
+  SysUserId = 'sys.user_id',
+  SysConversationTurns = 'sys.conversation_turns',
+  SysFiles = 'sys.files',
+}