feat: use conversations endpoint for default conversation (#1206)

src/cli/App.tsx

@@ -5690,10 +5690,11 @@ export default function App({
       // causing CONFLICT on the next user message.
       getClient()
         .then((client) => {
-          if (conversationIdRef.current === "default") {
-            return client.agents.messages.cancel(agentIdRef.current);
-          }
-          return client.conversations.cancel(conversationIdRef.current);
+          const cancelId =
+            conversationIdRef.current === "default"
+              ? agentIdRef.current
+              : conversationIdRef.current;
+          return client.conversations.cancel(cancelId);
         })
         .catch(() => {
           // Silently ignore - cancellation already happened client-side
@@ -5808,11 +5809,11 @@ export default function App({
       // Don't wait for it or show errors since user already got feedback
       getClient()
         .then((client) => {
-          // Use agents API for "default" conversation (primary message history)
-          if (conversationIdRef.current === "default") {
-            return client.agents.messages.cancel(agentIdRef.current);
-          }
-          return client.conversations.cancel(conversationIdRef.current);
+          const cancelId =
+            conversationIdRef.current === "default"
+              ? agentIdRef.current
+              : conversationIdRef.current;
+          return client.conversations.cancel(cancelId);
         })
         .catch(() => {
           // Silently ignore - cancellation already happened client-side
@@ -5832,12 +5833,11 @@ export default function App({
       setInterruptRequested(true);
       try {
         const client = await getClient();
-        // Use agents API for "default" conversation (primary message history)
-        if (conversationIdRef.current === "default") {
-          await client.agents.messages.cancel(agentIdRef.current);
-        } else {
-          await client.conversations.cancel(conversationIdRef.current);
-        }
+        const cancelId =
+          conversationIdRef.current === "default"
+            ? agentIdRef.current
+            : conversationIdRef.current;
+        await client.conversations.cancel(cancelId);
 
         if (abortControllerRef.current) {
           abortControllerRef.current.abort();
@@ -7886,15 +7886,14 @@ export default function App({
                 }
               : undefined;
 
-            // Use agent-level compact API for "default" conversation,
-            // otherwise use conversation-level API
-            const result =
+            const compactId =
               conversationIdRef.current === "default"
-                ? await client.agents.messages.compact(agentId, compactParams)
-                : await client.conversations.messages.compact(
-                    conversationIdRef.current,
-                    compactParams,
-                  );
+                ? agentId
+                : conversationIdRef.current;
+            const result = await client.conversations.messages.compact(
+              compactId,
+              compactParams,
+            );
 
             // Format success message with before/after counts and summary
             const outputLines = [

src/cli/components/ConversationSelector.tsx

@@ -242,12 +242,14 @@ export function ConversationSelector({
         let defaultConversation: EnrichedConversation | null = null;
         if (!afterCursor) {
           try {
-            const defaultMessages = await client.agents.messages.list(agentId, {
-              limit: 20,
-              order: "desc",
-              conversation_id: "default", // Filter to default conversation only
-            });
-            const defaultMsgItems = defaultMessages.items;
+            const defaultMessages = await client.conversations.messages.list(
+              agentId,
+              {
+                limit: 20,
+                order: "desc",
+              },
+            );
+            const defaultMsgItems = defaultMessages.getPaginatedItems();
             if (defaultMsgItems.length > 0) {
               const defaultStats = getMessageStats(
                 [...defaultMsgItems].reverse(),

src/cli/subcommands/messages.ts

@@ -159,14 +159,14 @@ export async function runMessagesSubcommand(argv: string[]): Promise<number> {
         return 1;
       }
 
-      const response = await client.agents.messages.list(agentId, {
+      const response = await client.conversations.messages.list(agentId, {
         limit: parseLimit(parsed.values.limit, 20),
         after: parsed.values.after,
         before: parsed.values.before,
         order,
       });
 
-      const messages = response.items ?? [];
+      const messages = response.getPaginatedItems() ?? [];
       const startDate = parsed.values["start-date"];
       const endDate = parsed.values["end-date"];