Render sub-agent activity from log

packages/server/src/shared/messages.stream-parsing.test.ts

@@ -179,13 +179,6 @@ describe("shared messages stream parsing", () => {
               subAgentType: "Explore",
               description: "Inspect repository structure",
               log: "[Read] README.md",
-              actions: [
-                {
-                  index: 1,
-                  toolName: "Read",
-                  summary: "README.md",
-                },
-              ],
             },
             error: null,
           },

packages/server/src/shared/messages.tool-call-schema.test.ts

@@ -122,18 +122,6 @@ describe("shared messages tool_call schema", () => {
         subAgentType: "Explore",
         description: "Inspect repository structure",
         log: "[Read] README.md\n[Bash] ls",
-        actions: [
-          {
-            index: 1,
-            toolName: "Read",
-            summary: "README.md",
-          },
-          {
-            index: 2,
-            toolName: "Bash",
-            summary: "ls",
-          },
-        ],
       },
     });
 
@@ -142,12 +130,11 @@ describe("shared messages tool_call schema", () => {
       expect(parsed.detail.type).toBe("sub_agent");
       if (parsed.detail.type === "sub_agent") {
         expect(parsed.detail.subAgentType).toBe("Explore");
-        expect(parsed.detail.actions).toHaveLength(2);
       }
     }
   });
 
-  it("defaults missing sub_agent actions for older payloads", () => {
+  it("parses sub_agent detail without structured actions", () => {
     const parsed = AgentTimelineItemPayloadSchema.parse({
       type: "tool_call",
       callId: "call_sub_agent_legacy",
@@ -166,7 +153,7 @@ describe("shared messages tool_call schema", () => {
     if (parsed.type === "tool_call") {
       expect(parsed.detail.type).toBe("sub_agent");
       if (parsed.detail.type === "sub_agent") {
-        expect(parsed.detail.actions).toEqual([]);
+        expect(parsed.detail.log).toBe("[Read] README.md");
       }
     }
   });

packages/server/src/shared/messages.ts

@@ -414,16 +414,6 @@ const ToolCallDetailPayloadSchema: z.ZodType<ToolCallDetail, z.ZodTypeDef, unkno
       description: z.string().optional(),
       childSessionId: z.string().optional(),
       log: z.string(),
-      actions: z
-        .array(
-          z.object({
-            index: z.number().int().positive(),
-            toolName: z.string(),
-            summary: z.string().optional(),
-          }),
-        )
-        .optional()
-        .default([]),
     }),
     z.object({
       type: z.literal("plain_text"),

packages/server/src/shared/tool-call-display.test.ts

@@ -48,13 +48,6 @@ describe("shared tool-call display mapping", () => {
         subAgentType: "Explore",
         description: "Inspect repository structure",
         log: "[Read] README.md",
-        actions: [
-          {
-            index: 1,
-            toolName: "Read",
-            summary: "README.md",
-          },
-        ],
       },
     });