fix: update examples to use stream() and haiku model

- Change session.receive() to session.stream() (API change)
- Use 'haiku' model instead of 'sonnet' (more reliable)
- Clean up debug output

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Co-Authored-By: Letta <noreply@letta.com>

examples/release-notes/generator.ts

@@ -154,7 +154,7 @@ export async function chat(
   let response = '';
   const printer = onOutput || createStreamPrinter();
   
-  for await (const msg of session.receive()) {
+  for await (const msg of session.stream()) {
     if (msg.type === 'assistant') {
       response += msg.content;
       printer(msg.content);

examples/release-notes/types.ts

@@ -12,5 +12,5 @@ export interface ReleaseNotesConfig {
 }
 
 export const DEFAULT_CONFIG: ReleaseNotesConfig = {
-  model: 'sonnet',
+  model: 'haiku',
 };