diff --git a/src/infra/channel-summary.test.ts b/src/infra/channel-summary.test.ts
index 01a4450a640..04e43866230 100644
--- a/src/infra/channel-summary.test.ts
+++ b/src/infra/channel-summary.test.ts
@@ -1,12 +1,9 @@
-import { describe, expect, it, vi } from "vitest";
-import { listChannelPlugins } from "../channels/plugins/index.js";
+import { afterEach, describe, expect, it } from "vitest";
 import type { ChannelPlugin } from "../channels/plugins/types.js";
+import { setActivePluginRegistry } from "../plugins/runtime.js";
+import { createTestRegistry } from "../test-utils/channel-plugins.js";
 import { buildChannelSummary } from "./channel-summary.js";
 
-vi.mock("../channels/plugins/index.js", () => ({
-  listChannelPlugins: vi.fn(),
-}));
-
 function makeSlackHttpSummaryPlugin(): ChannelPlugin {
   return {
     id: "slack",
@@ -207,8 +204,16 @@ function makeFallbackSummaryPlugin(params: {
 }
 
 describe("buildChannelSummary", () => {
+  afterEach(() => {
+    setActivePluginRegistry(createTestRegistry([]));
+  });
+
   it("preserves Slack HTTP signing-secret unavailable state from source config", async () => {
-    vi.mocked(listChannelPlugins).mockReturnValue([makeSlackHttpSummaryPlugin()]);
+    setActivePluginRegistry(
+      createTestRegistry([
+        { pluginId: "slack", plugin: makeSlackHttpSummaryPlugin(), source: "test" },
+      ]),
+    );
 
     const lines = await buildChannelSummary({ marker: "resolved", channels: {} } as never, {
       colorize: false,
@@ -223,9 +228,15 @@ describe("buildChannelSummary", () => {
   });
 
   it("shows disabled status without configured account detail lines", async () => {
-    vi.mocked(listChannelPlugins).mockReturnValue([
-      makeTelegramSummaryPlugin({ enabled: false, configured: false }),
-    ]);
+    setActivePluginRegistry(
+      createTestRegistry([
+        {
+          pluginId: "telegram",
+          plugin: makeTelegramSummaryPlugin({ enabled: false, configured: false }),
+          source: "test",
+        },
+      ]),
+    );
 
     const lines = await buildChannelSummary({ channels: {} } as never, {
       colorize: false,
@@ -236,15 +247,21 @@ describe("buildChannelSummary", () => {
   });
 
   it("includes linked summary metadata and truncates allow-from details", async () => {
-    vi.mocked(listChannelPlugins).mockReturnValue([
-      makeTelegramSummaryPlugin({
-        enabled: true,
-        configured: true,
-        linked: true,
-        authAgeMs: 300_000,
-        allowFrom: ["alice", "bob", "carol"],
-      }),
-    ]);
+    setActivePluginRegistry(
+      createTestRegistry([
+        {
+          pluginId: "telegram",
+          plugin: makeTelegramSummaryPlugin({
+            enabled: true,
+            configured: true,
+            linked: true,
+            authAgeMs: 300_000,
+            allowFrom: ["alice", "bob", "carol"],
+          }),
+          source: "test",
+        },
+      ]),
+    );
 
     const lines = await buildChannelSummary({ channels: {} } as never, {
       colorize: false,
@@ -256,13 +273,19 @@ describe("buildChannelSummary", () => {
   });
 
   it("shows not-linked status when linked metadata is explicitly false", async () => {
-    vi.mocked(listChannelPlugins).mockReturnValue([
-      makeTelegramSummaryPlugin({
-        enabled: true,
-        configured: true,
-        linked: false,
-      }),
-    ]);
+    setActivePluginRegistry(
+      createTestRegistry([
+        {
+          pluginId: "telegram",
+          plugin: makeTelegramSummaryPlugin({
+            enabled: true,
+            configured: true,
+            linked: false,
+          }),
+          source: "test",
+        },
+      ]),
+    );
 
     const lines = await buildChannelSummary({ channels: {} } as never, {
       colorize: false,
@@ -274,9 +297,15 @@ describe("buildChannelSummary", () => {
   });
 
   it("renders non-slack account detail fields for configured accounts", async () => {
-    vi.mocked(listChannelPlugins).mockReturnValue([
-      makeSignalSummaryPlugin({ enabled: false, configured: true }),
-    ]);
+    setActivePluginRegistry(
+      createTestRegistry([
+        {
+          pluginId: "signal",
+          plugin: makeSignalSummaryPlugin({ enabled: false, configured: true }),
+          source: "test",
+        },
+      ]),
+    );
 
     const lines = await buildChannelSummary({ channels: {} } as never, {
       colorize: false,
@@ -290,14 +319,20 @@ describe("buildChannelSummary", () => {
   });
 
   it("uses the channel label and default account id when no accounts exist", async () => {
-    vi.mocked(listChannelPlugins).mockReturnValue([
-      makeFallbackSummaryPlugin({
-        enabled: true,
-        configured: true,
-        accountIds: [],
-        defaultAccountId: "fallback-account",
-      }),
-    ]);
+    setActivePluginRegistry(
+      createTestRegistry([
+        {
+          pluginId: "fallback-plugin",
+          plugin: makeFallbackSummaryPlugin({
+            enabled: true,
+            configured: true,
+            accountIds: [],
+            defaultAccountId: "fallback-account",
+          }),
+          source: "test",
+        },
+      ]),
+    );
 
     const lines = await buildChannelSummary({ channels: {} } as never, {
       colorize: false,
@@ -308,13 +343,19 @@ describe("buildChannelSummary", () => {
   });
 
   it("shows not-configured status when enabled accounts exist without configured ones", async () => {
-    vi.mocked(listChannelPlugins).mockReturnValue([
-      makeFallbackSummaryPlugin({
-        enabled: true,
-        configured: false,
-        accountIds: ["fallback-account"],
-      }),
-    ]);
+    setActivePluginRegistry(
+      createTestRegistry([
+        {
+          pluginId: "fallback-plugin",
+          plugin: makeFallbackSummaryPlugin({
+            enabled: true,
+            configured: false,
+            accountIds: ["fallback-account"],
+          }),
+          source: "test",
+        },
+      ]),
+    );
 
     const lines = await buildChannelSummary({ channels: {} } as never, {
       colorize: false,