feat: make slash commands available in draft agent screen

packages/server/src/client/daemon-client.test.ts

@@ -769,6 +769,139 @@ describe("DaemonClient", () => {
     });
   });
 
+  test("lists commands with draft config via RPC", async () => {
+    const logger = createMockLogger();
+    const mock = createMockTransport();
+
+    const client = new DaemonClient({
+      url: "ws://test",
+      logger,
+      reconnect: { enabled: false },
+      transportFactory: () => mock.transport,
+    });
+    clients.push(client);
+
+    const connectPromise = client.connect();
+    mock.triggerOpen();
+    await connectPromise;
+
+    const promise = client.listCommands("__new_agent__", {
+      draftConfig: {
+        provider: "codex",
+        cwd: "/tmp/project",
+        modeId: "bypassPermissions",
+        model: "gpt-5",
+        thinkingOptionId: "off",
+      },
+    });
+    expect(mock.sent).toHaveLength(1);
+
+    const request = JSON.parse(mock.sent[0]) as {
+      type: "session";
+      message: {
+        type: "list_commands_request";
+        agentId: string;
+        draftConfig?: {
+          provider: string;
+          cwd: string;
+          modeId?: string;
+          model?: string;
+          thinkingOptionId?: string;
+        };
+        requestId: string;
+      };
+    };
+    expect(request.message.type).toBe("list_commands_request");
+    expect(request.message.agentId).toBe("__new_agent__");
+    expect(request.message.draftConfig).toEqual({
+      provider: "codex",
+      cwd: "/tmp/project",
+      modeId: "bypassPermissions",
+      model: "gpt-5",
+      thinkingOptionId: "off",
+    });
+
+    mock.triggerMessage(
+      JSON.stringify({
+        type: "session",
+        message: {
+          type: "list_commands_response",
+          payload: {
+            agentId: "__new_agent__",
+            commands: [
+              { name: "help", description: "Show help", argumentHint: "" },
+            ],
+            error: null,
+            requestId: request.message.requestId,
+          },
+        },
+      })
+    );
+
+    await expect(promise).resolves.toEqual({
+      agentId: "__new_agent__",
+      commands: [{ name: "help", description: "Show help", argumentHint: "" }],
+      error: null,
+      requestId: request.message.requestId,
+    });
+  });
+
+  test("lists commands with legacy requestId signature via RPC", async () => {
+    const logger = createMockLogger();
+    const mock = createMockTransport();
+
+    const client = new DaemonClient({
+      url: "ws://test",
+      logger,
+      reconnect: { enabled: false },
+      transportFactory: () => mock.transport,
+    });
+    clients.push(client);
+
+    const connectPromise = client.connect();
+    mock.triggerOpen();
+    await connectPromise;
+
+    const promise = client.listCommands("agent-1", "req-legacy");
+    expect(mock.sent).toHaveLength(1);
+
+    const request = JSON.parse(mock.sent[0]) as {
+      type: "session";
+      message: {
+        type: "list_commands_request";
+        agentId: string;
+        draftConfig?: unknown;
+        requestId: string;
+      };
+    };
+    expect(request.message.type).toBe("list_commands_request");
+    expect(request.message.agentId).toBe("agent-1");
+    expect(request.message.requestId).toBe("req-legacy");
+    expect(request.message.draftConfig).toBeUndefined();
+
+    mock.triggerMessage(
+      JSON.stringify({
+        type: "session",
+        message: {
+          type: "list_commands_response",
+          payload: {
+            agentId: "agent-1",
+            commands: [],
+            error: null,
+            requestId: "req-legacy",
+          },
+        },
+      })
+    );
+
+    await expect(promise).resolves.toEqual({
+      agentId: "agent-1",
+      commands: [],
+      error: null,
+      requestId: "req-legacy",
+    });
+  });
+
   test("auto-acks terminal stream chunks after delivery", async () => {
     const logger = createMockLogger();
     const mock = createMockTransport();

packages/server/src/client/daemon-client.ts

@@ -209,6 +209,14 @@ type SpeechModelsListPayload = SpeechModelsListResponse["payload"];
 type SpeechModelsDownloadPayload = SpeechModelsDownloadResponse["payload"];
 type ListCommandsPayload = ListCommandsResponse["payload"];
 type ExecuteCommandPayload = ExecuteCommandResponse["payload"];
+type ListCommandsDraftConfig = Pick<
+  AgentSessionConfig,
+  "provider" | "cwd" | "modeId" | "model" | "thinkingOptionId"
+>;
+type ListCommandsOptions = {
+  requestId?: string;
+  draftConfig?: ListCommandsDraftConfig;
+};
 type SetVoiceModePayload = Extract<
   SessionOutboundMessage,
   { type: "set_voice_mode_response" }
@@ -2171,15 +2179,30 @@ export class DaemonClient {
     });
   }
 
+  async listCommands(agentId: string, requestId?: string): Promise<ListCommandsPayload>;
   async listCommands(
     agentId: string,
-    requestId?: string
+    options?: ListCommandsOptions
+  ): Promise<ListCommandsPayload>;
+  async listCommands(
+    agentId: string,
+    requestIdOrOptions?: string | ListCommandsOptions
   ): Promise<ListCommandsPayload> {
+    const requestId =
+      typeof requestIdOrOptions === "string"
+        ? requestIdOrOptions
+        : requestIdOrOptions?.requestId;
+    const draftConfig =
+      typeof requestIdOrOptions === "string"
+        ? undefined
+        : requestIdOrOptions?.draftConfig;
+
     return this.sendCorrelatedSessionRequest({
       requestId,
       message: {
         type: "list_commands_request",
         agentId,
+        ...(draftConfig ? { draftConfig } : {}),
       },
       responseType: "list_commands_response",
       timeout: 30000,

packages/server/src/server/session.ts

@@ -1524,7 +1524,7 @@ export class Session {
         }
 
         case "list_commands_request":
-          await this.handleListCommandsRequest(msg.agentId, msg.requestId);
+          await this.handleListCommandsRequest(msg);
           break;
 
         case "execute_command_request":
@@ -3473,9 +3473,12 @@ export class Session {
   /**
    * Handle list commands request for an agent
    */
-  private async handleListCommandsRequest(agentId: string, requestId: string): Promise<void> {
+  private async handleListCommandsRequest(
+    msg: Extract<SessionInboundMessage, { type: "list_commands_request" }>
+  ): Promise<void> {
+    const { agentId, requestId, draftConfig } = msg;
     this.sessionLogger.debug(
-      { agentId },
+      { agentId, draftConfig },
       `Handling list commands request for agent ${agentId}`
     );
 
@@ -3483,47 +3486,100 @@ export class Session {
       const agents = this.agentManager.listAgents();
       const agent = agents.find((a) => a.id === agentId);
 
-      if (!agent) {
+      if (agent?.session?.listCommands) {
+        const commands = await agent.session.listCommands();
         this.emit({
           type: "list_commands_response",
           payload: {
             agentId,
-            commands: [],
-            error: `Agent not found: ${agentId}`,
+            commands,
+            error: null,
             requestId,
           },
         });
         return;
       }
 
-      const session = agent.session;
-      if (!session || !session.listCommands) {
-        this.emit({
-          type: "list_commands_response",
-          payload: {
-            agentId,
-            commands: [],
-            error: `Agent does not support listing commands`,
-            requestId,
-          },
-        });
+      if (!agent && draftConfig) {
+        const provider = draftConfig.provider;
+        const client = this.providerRegistry[provider].createClient(this.sessionLogger);
+        const available = await client.isAvailable();
+        if (!available) {
+          this.emit({
+            type: "list_commands_response",
+            payload: {
+              agentId,
+              commands: [],
+              error: `Provider '${provider}' is not available`,
+              requestId,
+            },
+          });
+          return;
+        }
+
+        const sessionConfig: AgentSessionConfig = {
+          provider,
+          cwd: expandTilde(draftConfig.cwd),
+          ...(draftConfig.modeId ? { modeId: draftConfig.modeId } : {}),
+          ...(draftConfig.model ? { model: draftConfig.model } : {}),
+          ...(draftConfig.thinkingOptionId
+            ? { thinkingOptionId: draftConfig.thinkingOptionId }
+            : {}),
+        };
+
+        const ephemeralSession = await client.createSession(sessionConfig);
+        try {
+          if (!ephemeralSession.listCommands) {
+            this.emit({
+              type: "list_commands_response",
+              payload: {
+                agentId,
+                commands: [],
+                error: `Provider '${provider}' does not support listing commands`,
+                requestId,
+              },
+            });
+            return;
+          }
+
+          const commands = await ephemeralSession.listCommands();
+          this.emit({
+            type: "list_commands_response",
+            payload: {
+              agentId,
+              commands,
+              error: null,
+              requestId,
+            },
+          });
+        } finally {
+          try {
+            await ephemeralSession.close();
+          } catch (closeError) {
+            this.sessionLogger.warn(
+              { err: closeError, provider, agentId },
+              "Failed to close ephemeral command listing session"
+            );
+          }
+        }
         return;
       }
 
-      const commands = await session.listCommands();
-
       this.emit({
         type: "list_commands_response",
         payload: {
           agentId,
-          commands,
-          error: null,
+          commands: [],
+          error: agent
+            ? `Agent does not support listing commands`
+            : `Agent not found: ${agentId}`,
           requestId,
         },
       });
+
     } catch (error: any) {
       this.sessionLogger.error(
-        { err: error, agentId },
+        { err: error, agentId, draftConfig },
         "Failed to list commands"
       );
       this.emit({

packages/server/src/shared/messages.list-commands.test.ts

@@ -0,0 +1,46 @@
+import { describe, expect, test } from "vitest";
+import { SessionInboundMessageSchema } from "./messages.js";
+
+describe("list_commands_request schema", () => {
+  test("accepts legacy agent-only payload", () => {
+    const parsed = SessionInboundMessageSchema.parse({
+      type: "list_commands_request",
+      agentId: "agent-123",
+      requestId: "req-123",
+    });
+
+    expect(parsed.type).toBe("list_commands_request");
+    if (parsed.type !== "list_commands_request") {
+      throw new Error("Expected list_commands_request message");
+    }
+    expect(parsed.agentId).toBe("agent-123");
+    expect(parsed.draftConfig).toBeUndefined();
+  });
+
+  test("accepts draft command context payload", () => {
+    const parsed = SessionInboundMessageSchema.parse({
+      type: "list_commands_request",
+      agentId: "__new_agent__",
+      draftConfig: {
+        provider: "codex",
+        cwd: "/tmp/project",
+        modeId: "bypassPermissions",
+        model: "gpt-5",
+        thinkingOptionId: "off",
+      },
+      requestId: "req-456",
+    });
+
+    expect(parsed.type).toBe("list_commands_request");
+    if (parsed.type !== "list_commands_request") {
+      throw new Error("Expected list_commands_request message");
+    }
+    expect(parsed.draftConfig).toEqual({
+      provider: "codex",
+      cwd: "/tmp/project",
+      modeId: "bypassPermissions",
+      model: "gpt-5",
+      thinkingOptionId: "off",
+    });
+  });
+});

packages/server/src/shared/messages.ts

@@ -926,9 +926,18 @@ export const PingMessageSchema = z.object({
   clientSentAt: z.number().int().optional(),
 });
 
+const ListCommandsDraftConfigSchema = z.object({
+  provider: AgentProviderSchema,
+  cwd: z.string(),
+  modeId: z.string().optional(),
+  model: z.string().optional(),
+  thinkingOptionId: z.string().optional(),
+});
+
 export const ListCommandsRequestSchema = z.object({
   type: z.literal("list_commands_request"),
   agentId: z.string(),
+  draftConfig: ListCommandsDraftConfigSchema.optional(),
   requestId: z.string(),
 });