fix(plugins): stage runtime deps for selected slots

src/plugins/bundled-runtime-deps.test.ts

@@ -1013,6 +1013,12 @@ describe("scanBundledPluginRuntimeDeps config policy", () => {
       includeConfiguredChannels: false,
       expectedDeps: [],
     },
+    {
+      name: "includes selected memory slot bundled plugins behind restrictive allowlists",
+      config: { plugins: { allow: ["browser"], slots: { memory: "alpha" } } },
+      includeConfiguredChannels: false,
+      expectedDeps: ["alpha-runtime@1.0.0"],
+    },
     {
       name: "does not let explicit plugin entries bypass restrictive allowlists",
       config: { plugins: { allow: ["browser"], entries: { alpha: { enabled: true } } } },
@@ -2562,6 +2568,40 @@ describe("ensureBundledPluginRuntimeDeps", () => {
     expect(installRoot).not.toBe(pluginRoot);
   });
 
+  it("installs runtime deps for the default memory slot bundled plugin", () => {
+    const packageRoot = makeTempDir();
+    const pluginRoot = writeBundledPluginPackage({
+      packageRoot,
+      pluginId: "memory-core",
+      deps: { chokidar: "^5.0.0" },
+    });
+    const calls: BundledRuntimeDepsInstallParams[] = [];
+
+    const result = ensureBundledPluginRuntimeDeps({
+      env: {},
+      config: {},
+      installDeps: (params) => {
+        calls.push(params);
+      },
+      pluginId: "memory-core",
+      pluginRoot,
+    });
+
+    expect(result).toEqual({
+      installedSpecs: ["chokidar@^5.0.0"],
+      retainSpecs: ["chokidar@^5.0.0"],
+    });
+    const installRoot = resolveBundledRuntimeDependencyInstallRoot(pluginRoot, { env: {} });
+    expect(calls).toEqual([
+      {
+        installRoot,
+        missingSpecs: ["chokidar@^5.0.0"],
+        installSpecs: ["chokidar@^5.0.0"],
+      },
+    ]);
+    expect(installRoot).not.toBe(pluginRoot);
+  });
+
   it("repairs external staged deps even when packaged plugin-local deps are present", () => {
     const packageRoot = makeTempDir();
     const extensionsRoot = path.join(packageRoot, "dist", "extensions");

src/plugins/bundled-runtime-deps.ts

@@ -1420,6 +1420,9 @@ function isBundledPluginConfiguredForRuntimeDeps(params: {
   }
   const entry = plugins.entries[params.pluginId];
   const manifest = readBundledPluginRuntimeDepsManifest(params.pluginDir, params.manifestCache);
+  if (plugins.slots.memory === params.pluginId || plugins.slots.contextEngine === params.pluginId) {
+    return true;
+  }
   let hasExplicitChannelDisable = false;
   let hasConfiguredChannel = false;
   for (const channelId of manifest.channels) {