refactor(test): dedupe discord handler setup

src/discord/monitor.tool-result.accepts-guild-messages-mentionpatterns-match.e2e.test.ts

@@ -90,11 +90,42 @@ beforeEach(() => {
 
 const MENTION_PATTERNS_TEST_TIMEOUT_MS = process.platform === "win32" ? 90_000 : 60_000;
 
+type LoadedConfig = ReturnType<(typeof import("../config/config.js"))["loadConfig"]>;
+
+function makeRuntime() {
+  return {
+    log: vi.fn(),
+    error: vi.fn(),
+    exit: (code: number): never => {
+      throw new Error(`exit ${code}`);
+    },
+  };
+}
+
+async function createHandler(cfg: LoadedConfig) {
+  const { createDiscordMessageHandler } = await import("./monitor.js");
+  return createDiscordMessageHandler({
+    cfg,
+    discordConfig: cfg.channels.discord,
+    accountId: "default",
+    token: "token",
+    runtime: makeRuntime(),
+    botUserId: "bot-id",
+    guildHistories: new Map(),
+    historyLimit: 0,
+    mediaMaxBytes: 10_000,
+    textLimit: 2000,
+    replyToMode: "off",
+    dmEnabled: true,
+    groupDmEnabled: false,
+    guildEntries: cfg.channels.discord.guilds,
+  });
+}
+
 describe("discord tool result dispatch", () => {
   it(
     "accepts guild messages when mentionPatterns match",
     async () => {
-      const { createDiscordMessageHandler } = await import("./monitor.js");
       const cfg = {
         agents: {
           defaults: {
@@ -116,28 +147,7 @@ describe("discord tool result dispatch", () => {
         },
       } as ReturnType<typeof import("../config/config.js").loadConfig>;
 
-      const handler = createDiscordMessageHandler({
+      const handler = await createHandler(cfg);
-        cfg,
-        discordConfig: cfg.channels.discord,
-        accountId: "default",
-        token: "token",
-        runtime: {
-          log: vi.fn(),
-          error: vi.fn(),
-          exit: (code: number): never => {
-            throw new Error(`exit ${code}`);
-          },
-        },
-        botUserId: "bot-id",
-        guildHistories: new Map(),
-        historyLimit: 0,
-        mediaMaxBytes: 10_000,
-        textLimit: 2000,
-        replyToMode: "off",
-        dmEnabled: true,
-        groupDmEnabled: false,
-        guildEntries: { "*": { requireMention: true } },
-      });
 
       const client = {
         fetchChannel: vi.fn().mockResolvedValue({
@@ -227,7 +237,6 @@ describe("discord tool result dispatch", () => {
   );
 
   it("accepts guild reply-to-bot messages as implicit mentions", async () => {
-    const { createDiscordMessageHandler } = await import("./monitor.js");
     const cfg = {
       agents: {
         defaults: {
@@ -245,28 +254,7 @@ describe("discord tool result dispatch", () => {
       },
     } as ReturnType<typeof import("../config/config.js").loadConfig>;
 
-    const handler = createDiscordMessageHandler({
+    const handler = await createHandler(cfg);
-      cfg,
-      discordConfig: cfg.channels.discord,
-      accountId: "default",
-      token: "token",
-      runtime: {
-        log: vi.fn(),
-        error: vi.fn(),
-        exit: (code: number): never => {
-          throw new Error(`exit ${code}`);
-        },
-      },
-      botUserId: "bot-id",
-      guildHistories: new Map(),
-      historyLimit: 0,
-      mediaMaxBytes: 10_000,
-      textLimit: 2000,
-      replyToMode: "off",
-      dmEnabled: true,
-      groupDmEnabled: false,
-      guildEntries: { "*": { requireMention: true } },
-    });
 
     const client = {
       fetchChannel: vi.fn().mockResolvedValue({
@@ -327,7 +315,6 @@ describe("discord tool result dispatch", () => {
   });
 
   it("forks thread sessions and injects starter context", async () => {
-    const { createDiscordMessageHandler } = await import("./monitor.js");
     let capturedCtx:
       | {
           SessionKey?: string;
@@ -360,28 +347,7 @@ describe("discord tool result dispatch", () => {
       },
     } as ReturnType<typeof import("../config/config.js").loadConfig>;
 
-    const handler = createDiscordMessageHandler({
+    const handler = await createHandler(cfg);
-      cfg,
-      discordConfig: cfg.channels.discord,
-      accountId: "default",
-      token: "token",
-      runtime: {
-        log: vi.fn(),
-        error: vi.fn(),
-        exit: (code: number): never => {
-          throw new Error(`exit ${code}`);
-        },
-      },
-      botUserId: "bot-id",
-      guildHistories: new Map(),
-      historyLimit: 0,
-      mediaMaxBytes: 10_000,
-      textLimit: 2000,
-      replyToMode: "off",
-      dmEnabled: true,
-      groupDmEnabled: false,
-      guildEntries: { "*": { requireMention: false } },
-    });
 
     const threadChannel = {
       type: ChannelType.GuildText,
@@ -441,7 +407,6 @@ describe("discord tool result dispatch", () => {
   });
 
   it("skips thread starter context when disabled", async () => {
-    const { createDiscordMessageHandler } = await import("./monitor.js");
     let capturedCtx:
       | {
           ThreadStarterBody?: string;
@@ -477,28 +442,7 @@ describe("discord tool result dispatch", () => {
       },
     } as ReturnType<typeof import("../config/config.js").loadConfig>;
 
-    const handler = createDiscordMessageHandler({
+    const handler = await createHandler(cfg);
-      cfg,
-      discordConfig: cfg.channels.discord,
-      accountId: "default",
-      token: "token",
-      runtime: {
-        log: vi.fn(),
-        error: vi.fn(),
-        exit: (code: number): never => {
-          throw new Error(`exit ${code}`);
-        },
-      },
-      botUserId: "bot-id",
-      guildHistories: new Map(),
-      historyLimit: 0,
-      mediaMaxBytes: 10_000,
-      textLimit: 2000,
-      replyToMode: "off",
-      dmEnabled: true,
-      groupDmEnabled: false,
-      guildEntries: cfg.channels.discord.guilds,
-    });
 
     const threadChannel = {
       type: ChannelType.GuildText,
@@ -550,7 +494,6 @@ describe("discord tool result dispatch", () => {
   });
 
   it("treats forum threads as distinct sessions without channel payloads", async () => {
-    const { createDiscordMessageHandler } = await import("./monitor.js");
     let capturedCtx:
       | {
           SessionKey?: string;
@@ -578,28 +521,7 @@ describe("discord tool result dispatch", () => {
       routing: { allowFrom: [] },
     } as ReturnType<typeof import("../config/config.js").loadConfig>;
 
-    const handler = createDiscordMessageHandler({
+    const handler = await createHandler(cfg);
-      cfg,
-      discordConfig: cfg.channels.discord,
-      accountId: "default",
-      token: "token",
-      runtime: {
-        log: vi.fn(),
-        error: vi.fn(),
-        exit: (code: number): never => {
-          throw new Error(`exit ${code}`);
-        },
-      },
-      botUserId: "bot-id",
-      guildHistories: new Map(),
-      historyLimit: 0,
-      mediaMaxBytes: 10_000,
-      textLimit: 2000,
-      replyToMode: "off",
-      dmEnabled: true,
-      groupDmEnabled: false,
-      guildEntries: { "*": { requireMention: false } },
-    });
 
     const fetchChannel = vi
       .fn()
@@ -655,8 +577,6 @@ describe("discord tool result dispatch", () => {
   });
 
   it("scopes thread sessions to the routed agent", async () => {
-    const { createDiscordMessageHandler } = await import("./monitor.js");
-
     let capturedCtx:
       | {
           SessionKey?: string;
@@ -689,28 +609,7 @@ describe("discord tool result dispatch", () => {
     } as ReturnType<typeof import("../config/config.js").loadConfig>;
     loadConfigMock.mockReturnValue(cfg);
 
-    const handler = createDiscordMessageHandler({
+    const handler = await createHandler(cfg);
-      cfg,
-      discordConfig: cfg.channels.discord,
-      accountId: "default",
-      token: "token",
-      runtime: {
-        log: vi.fn(),
-        error: vi.fn(),
-        exit: (code: number): never => {
-          throw new Error(`exit ${code}`);
-        },
-      },
-      botUserId: "bot-id",
-      guildHistories: new Map(),
-      historyLimit: 0,
-      mediaMaxBytes: 10_000,
-      textLimit: 2000,
-      replyToMode: "off",
-      dmEnabled: true,
-      groupDmEnabled: false,
-      guildEntries: { "*": { requireMention: false } },
-    });
 
     const threadChannel = {
       type: ChannelType.GuildText,