refactor(test): stabilize case tables and readonly helper inputs

src/infra/outbound/envelope.ts

@@ -9,7 +9,7 @@ export type OutboundResultEnvelope = {
 };
 
 type BuildEnvelopeParams = {
-  payloads?: ReplyPayload[] | OutboundPayloadJson[];
+  payloads?: readonly ReplyPayload[] | readonly OutboundPayloadJson[];
   meta?: unknown;
   delivery?: OutboundDeliveryJson;
   flattenDelivery?: boolean;
@@ -29,8 +29,8 @@ export function buildOutboundResultEnvelope(
       : params.payloads.length === 0
         ? []
         : isOutboundPayloadJson(params.payloads[0])
-          ? (params.payloads as OutboundPayloadJson[])
-          : normalizeOutboundPayloadsForJson(params.payloads as ReplyPayload[]);
+          ? [...(params.payloads as readonly OutboundPayloadJson[])]
+          : normalizeOutboundPayloadsForJson(params.payloads as readonly ReplyPayload[]);
 
   if (params.flattenDelivery !== false && params.delivery && !params.meta && !hasPayloads) {
     return params.delivery;

src/infra/outbound/outbound.test.ts

@@ -8,6 +8,7 @@ import type { ReplyPayload } from "../../auto-reply/types.js";
 import type { OpenClawConfig } from "../../config/config.js";
 import { setActivePluginRegistry } from "../../plugins/runtime.js";
 import { createTestRegistry } from "../../test-utils/channel-plugins.js";
+import { typedCases } from "../../test-utils/typed-cases.js";
 import {
   ackDelivery,
   computeBackoffMs,
@@ -447,7 +448,11 @@ describe("buildOutboundResultEnvelope", () => {
       mediaUrl: null,
       channelId: "C1",
     };
-    const cases = [
+    const cases = typedCases<{
+      name: string;
+      input: Parameters<typeof buildOutboundResultEnvelope>[0];
+      expected: unknown;
+    }>([
       {
         name: "flatten delivery by default",
         input: { delivery: whatsappDelivery },
@@ -478,7 +483,7 @@ describe("buildOutboundResultEnvelope", () => {
         input: { delivery: discordDelivery, flattenDelivery: false },
         expected: { delivery: discordDelivery },
       },
-    ];
+    ]);
     for (const testCase of cases) {
       const input: Parameters<typeof buildOutboundResultEnvelope>[0] =
         "payloads" in testCase.input
@@ -814,7 +819,10 @@ describe("resolveOutboundSessionRoute", () => {
 
 describe("normalizeOutboundPayloadsForJson", () => {
   it("normalizes payloads for JSON output", () => {
-    const cases = [
+    const cases = typedCases<{
+      input: Parameters<typeof normalizeOutboundPayloadsForJson>[0];
+      expected: ReturnType<typeof normalizeOutboundPayloadsForJson>;
+    }>([
       {
         input: [
           { text: "hi" },
@@ -852,7 +860,7 @@ describe("normalizeOutboundPayloadsForJson", () => {
           },
         ],
       },
-    ];
+    ]);
 
     for (const testCase of cases) {
       const input: ReplyPayload[] = testCase.input.map((payload) =>
@@ -878,7 +886,11 @@ describe("normalizeOutboundPayloads", () => {
 
 describe("formatOutboundPayloadLog", () => {
   it("formats text+media and media-only logs", () => {
-    const cases = [
+    const cases = typedCases<{
+      name: string;
+      input: Parameters<typeof formatOutboundPayloadLog>[0];
+      expected: string;
+    }>([
       {
         name: "text with media lines",
         input: {
@@ -895,7 +907,7 @@ describe("formatOutboundPayloadLog", () => {
         },
         expected: "MEDIA:https://x.test/a.png",
       },
-    ];
+    ]);
 
     for (const testCase of cases) {
       expect(

src/infra/outbound/payloads.ts

@@ -15,7 +15,7 @@ export type OutboundPayloadJson = {
   channelData?: Record<string, unknown>;
 };
 
-function mergeMediaUrls(...lists: Array<Array<string | undefined> | undefined>): string[] {
+function mergeMediaUrls(...lists: Array<ReadonlyArray<string | undefined> | undefined>): string[] {
   const seen = new Set<string>();
   const merged: string[] = [];
   for (const list of lists) {
@@ -37,7 +37,9 @@ function mergeMediaUrls(...lists: Array<Array<string | undefined> | undefined>):
   return merged;
 }
 
-export function normalizeReplyPayloadsForDelivery(payloads: ReplyPayload[]): ReplyPayload[] {
+export function normalizeReplyPayloadsForDelivery(
+  payloads: readonly ReplyPayload[],
+): ReplyPayload[] {
   return payloads.flatMap((payload) => {
     const parsed = parseReplyDirectives(payload.text ?? "");
     const explicitMediaUrls = payload.mediaUrls ?? parsed.mediaUrls;
@@ -68,7 +70,9 @@ export function normalizeReplyPayloadsForDelivery(payloads: ReplyPayload[]): Rep
   });
 }
 
-export function normalizeOutboundPayloads(payloads: ReplyPayload[]): NormalizedOutboundPayload[] {
+export function normalizeOutboundPayloads(
+  payloads: readonly ReplyPayload[],
+): NormalizedOutboundPayload[] {
   return normalizeReplyPayloadsForDelivery(payloads)
     .map((payload) => {
       const channelData = payload.channelData;
@@ -89,7 +93,9 @@ export function normalizeOutboundPayloads(payloads: ReplyPayload[]): NormalizedO
     );
 }
 
-export function normalizeOutboundPayloadsForJson(payloads: ReplyPayload[]): OutboundPayloadJson[] {
+export function normalizeOutboundPayloadsForJson(
+  payloads: readonly ReplyPayload[],
+): OutboundPayloadJson[] {
   return normalizeReplyPayloadsForDelivery(payloads).map((payload) => ({
     text: payload.text ?? "",
     mediaUrl: payload.mediaUrl ?? null,
@@ -98,7 +104,11 @@ export function normalizeOutboundPayloadsForJson(payloads: ReplyPayload[]): Outb
   }));
 }
 
-export function formatOutboundPayloadLog(payload: NormalizedOutboundPayload): string {
+export function formatOutboundPayloadLog(
+  payload: Pick<NormalizedOutboundPayload, "text" | "channelData"> & {
+    mediaUrls: readonly string[];
+  },
+): string {
   const lines: string[] = [];
   if (payload.text) {
     lines.push(payload.text.trimEnd());