feat: project durable agent conversations

apps/web/src/lib/chat/conversation.test.ts

@@ -20,7 +20,7 @@ describe("projectConversation", () => {
         messageId: "user-1",
         rawText: "Build it",
         role: "user",
-        status: "processing",
+        status: "dispatching",
       }),
       row({ messageId: "assistant-1", role: "assistant", status: "queued" }),
     ]);
@@ -28,6 +28,21 @@ describe("projectConversation", () => {
     expect(state.messages).toHaveLength(1);
   });
 
+  test("projects partial assistant text as streaming", () => {
+    const state = projectConversation([
+      row({
+        messageId: "assistant-streaming",
+        rawText: "Working",
+        role: "assistant",
+        status: "running",
+      }),
+    ]);
+    expect(state.streaming).toBe(true);
+    expect(state.messages[0]?.parts).toEqual([
+      { state: "streaming", text: "Working", type: "text" },
+    ]);
+  });
+
   test("projects completed Convex rows into renderable messages", () => {
     const state = projectConversation([
       row({

apps/web/src/lib/chat/conversation.ts

@@ -11,40 +11,67 @@ export interface ConversationRow {
   readonly messageId: string;
   readonly rawText: string;
   readonly role: "assistant" | "user";
-  readonly status: "completed" | "failed" | "processing" | "queued";
+  readonly status:
+    | "aborted"
+    | "completed"
+    | "dispatching"
+    | "failed"
+    | "queued"
+    | "running";
 }
 
-export const projectConversation = (rows: readonly ConversationRow[]) => ({
-  failedError: rows.findLast(
-    (row) => row.role === "assistant" && row.status === "failed"
-  )?.error,
-  messages: rows
-    .filter((row) => row.role === "user" || row.status === "completed")
-    .map<ConversationMessage>((row) => ({
-      id: row.messageId,
-      parts: [
-        ...row.attachments.map((attachment) => ({
-          filename: attachment.filename ?? undefined,
-          id: attachment.id,
-          mediaType: attachment.mediaType,
-          type: "file" as const,
-          url: attachment.url ?? undefined,
-        })),
-        ...(row.rawText
-          ? [
-              {
-                state: "done" as const,
-                text: row.rawText,
-                type: "text" as const,
-              },
-            ]
-          : []),
-      ],
-      role: row.role,
-    })),
-  pending: rows.some(
+export const projectConversation = (rows: readonly ConversationRow[]) => {
+  const streaming = rows.some(
     (row) =>
       row.role === "assistant" &&
-      (row.status === "queued" || row.status === "processing")
-  ),
-});
+      row.status === "running" &&
+      row.rawText.length > 0
+  );
+  return {
+    failedError: rows.findLast(
+      (row) => row.role === "assistant" && row.status === "failed"
+    )?.error,
+    messages: rows
+      .filter(
+        (row) =>
+          row.role === "user" ||
+          row.status === "completed" ||
+          (row.role === "assistant" &&
+            row.status === "running" &&
+            row.rawText.length > 0)
+      )
+      .map<ConversationMessage>((row) => ({
+        id: row.messageId,
+        parts: [
+          ...row.attachments.map((attachment) => ({
+            filename: attachment.filename ?? undefined,
+            id: attachment.id,
+            mediaType: attachment.mediaType,
+            type: "file" as const,
+            url: attachment.url ?? undefined,
+          })),
+          ...(row.rawText
+            ? [
+                {
+                  state:
+                    row.status === "running"
+                      ? ("streaming" as const)
+                      : ("done" as const),
+                  text: row.rawText,
+                  type: "text" as const,
+                },
+              ]
+            : []),
+        ],
+        role: row.role,
+      })),
+    pending: rows.some(
+      (row) =>
+        row.role === "assistant" &&
+        (row.status === "queued" ||
+          row.status === "dispatching" ||
+          row.status === "running")
+    ),
+    streaming,
+  };
+};