Pass up intent with completion requests (#31710)

This PR adds a new `intent` field to completion requests to assist in
categorizing them correctly.

Release Notes:

- N/A

---------

Co-authored-by: Ben Brandt <benjamin.j.brandt@gmail.com>

crates/assistant_tools/src/edit_agent.rs

@@ -28,6 +28,7 @@ use std::{cmp, iter, mem, ops::Range, path::PathBuf, pin::Pin, sync::Arc, task::
 use streaming_diff::{CharOperation, StreamingDiff};
 use streaming_fuzzy_matcher::StreamingFuzzyMatcher;
 use util::debug_panic;
+use zed_llm_client::CompletionIntent;
 
 #[derive(Serialize)]
 struct CreateFilePromptTemplate {
@@ -106,7 +107,9 @@ impl EditAgent {
                 edit_description,
             }
             .render(&this.templates)?;
-            let new_chunks = this.request(conversation, prompt, cx).await?;
+            let new_chunks = this
+                .request(conversation, CompletionIntent::CreateFile, prompt, cx)
+                .await?;
 
             let (output, mut inner_events) = this.overwrite_with_chunks(buffer, new_chunks, cx);
             while let Some(event) = inner_events.next().await {
@@ -213,7 +216,9 @@ impl EditAgent {
                 edit_description,
             }
             .render(&this.templates)?;
-            let edit_chunks = this.request(conversation, prompt, cx).await?;
+            let edit_chunks = this
+                .request(conversation, CompletionIntent::EditFile, prompt, cx)
+                .await?;
             this.apply_edit_chunks(buffer, edit_chunks, events_tx, cx)
                 .await
         });
@@ -589,6 +594,7 @@ impl EditAgent {
     async fn request(
         &self,
         mut conversation: LanguageModelRequest,
+        intent: CompletionIntent,
         prompt: String,
         cx: &mut AsyncApp,
     ) -> Result<BoxStream<'static, Result<String, LanguageModelCompletionError>>> {
@@ -646,6 +652,7 @@ impl EditAgent {
         let request = LanguageModelRequest {
             thread_id: conversation.thread_id,
             prompt_id: conversation.prompt_id,
+            intent: Some(intent),
             mode: conversation.mode,
             messages: conversation.messages,
             tool_choice,