feat: restore (but simpler) chat builtin

cli/src/builtins.rs

@@ -1,4 +1,5 @@
 pub mod bulk_map;
+pub mod chat;
 pub mod email;
 pub mod email2;
 pub mod email3;
@@ -14,6 +15,7 @@ pub mod spans;
 #[derive(clap::ValueEnum, Clone, Debug, serde::Serialize)]
 #[clap(rename_all = "lowercase")]
 pub enum Builtin {
+    Chat,
     BulkMap,
     Email,
     Email2,

cli/src/builtins/chat.rs

@@ -0,0 +1,17 @@
+use crate::args::Args;
+use spnl::{ir::Query, spnl};
+
+pub fn query(args: Args) -> Query {
+    let Args {
+        model,
+        temperature,
+        max_tokens,
+        prompt,
+        ..
+    } = args;
+    let my_prompt = prompt.unwrap_or("what is the sky blue".to_string());
+
+    spnl!(
+        g model (cross "Chatting" (system "You are a helpful chat bot") (user my_prompt)) temperature max_tokens
+    )
+}

cli/src/main.rs

@@ -171,6 +171,7 @@ async fn run(args: Args) -> Result<(), SpnlError> {
 
     let query = hlo::optimize(
         &match args.builtin {
+            Some(Builtin::Chat) => chat::query(args),
             Some(Builtin::BulkMap) => bulk_map::query(args),
             Some(Builtin::Email) => email::query(args),
             Some(Builtin::Email2) => email2::query(args),