feat(telemetry) Instrument traces with more attributes and make them available to OTEL users (#20237)

Co-authored-by: gemini-code-assist[bot] <176961590+gemini-code-assist[bot]@users.noreply.github.com>
Co-authored-by: Jerop Kipruto <jerop@google.com>
Co-authored-by: MD. MOHIBUR RAHMAN <35300157+mrpmohiburrahman@users.noreply.github.com>
Co-authored-by: Jeffrey Ying <jeffrey.ying86@live.com>
Co-authored-by: Bryan Morgan <bryanmorgan@google.com>
Co-authored-by: joshualitt <joshualitt@google.com>
Co-authored-by: Dev Randalpura <devrandalpura@google.com>
Co-authored-by: Google Admin <github-admin@google.com>
Co-authored-by: Ben Knutson <benknutson@google.com>

packages/cli/src/ui/hooks/useGeminiStream.ts

@@ -36,6 +36,7 @@ import {
   CoreToolCallStatus,
   buildUserSteeringHintPrompt,
   generateSteeringAckMessage,
+  GeminiCliOperation,
   getPlanModeExitMessage,
 } from '@google/gemini-cli-core';
 import type {
@@ -1262,7 +1263,11 @@ export const useGeminiStream = (
       prompt_id?: string,
     ) =>
       runInDevTraceSpan(
-        { name: 'submitQuery' },
+        {
+          operation: options?.isContinuation
+            ? GeminiCliOperation.SystemPrompt
+            : GeminiCliOperation.UserPrompt,
+        },
         async ({ metadata: spanMetadata }) => {
           spanMetadata.input = query;