fix: refresh plugin settings after enabling a plugin and match select and disabled bar styling

src/ui/components/select2.tsx

@@ -154,7 +154,7 @@ function Select2({
           aria-expanded={open}
           aria-required={required}
           className={cn(
-            "border-input bg-background text-foreground flex h-9 w-full items-center justify-between gap-2 rounded-none border px-3 py-2 text-sm shadow-xs transition-[color,box-shadow] outline-none focus-visible:border-ring focus-visible:ring-ring/50 focus-visible:ring-[3px] disabled:cursor-not-allowed disabled:opacity-50",
+            "border-input bg-transparent dark:bg-input/30 dark:hover:bg-input/50 text-foreground flex h-9 w-full items-center justify-between gap-2 rounded-none border px-3 py-2 text-sm shadow-xs transition-[color,box-shadow] outline-none focus-visible:border-ring focus-visible:ring-ring/50 focus-visible:ring-[3px] disabled:cursor-not-allowed disabled:opacity-50",
             className,
           )}
           onKeyDown={(event) => {

src/ui/hooks/use-installed-plugins.ts

@@ -0,0 +1,35 @@
+import { useEffect, useState } from "react";
+import {
+  getPlugins,
+  PLUGINS_CHANGED_EVENT,
+  type PluginSummary,
+} from "@/api/plugins-api";
+
+/**
+ * Every installed plugin, read again whenever one is enabled, disabled,
+ * installed or removed, so what a plugin adds shows up without a reload.
+ */
+export function useInstalledPlugins(): PluginSummary[] {
+  const [plugins, setPlugins] = useState<PluginSummary[]>([]);
+
+  useEffect(() => {
+    let cancelled = false;
+    let request = 0;
+    const load = () => {
+      const current = ++request;
+      void getPlugins()
+        .then((loaded) => {
+          if (!cancelled && current === request) setPlugins(loaded);
+        })
+        .catch(() => {});
+    };
+    load();
+    window.addEventListener(PLUGINS_CHANGED_EVENT, load);
+    return () => {
+      cancelled = true;
+      window.removeEventListener(PLUGINS_CHANGED_EVENT, load);
+    };
+  }, []);
+
+  return plugins;
+}

src/ui/i18n/i18n.ts

@@ -168,6 +168,8 @@ i18n
 
     react: {
       useSuspense: false,
+      // Repaint when a plugin enabled later loads its strings.
+      bindI18n: "languageChanged loaded",
     },
   });
 

src/ui/plugin-host/bridge.ts

@@ -23,6 +23,7 @@ import {
   getPluginAdminSettings,
   getPluginHostSettings,
   getPluginUserSettings,
+  PLUGIN_SETTINGS_CHANGED_EVENT,
   updatePluginAdminSettings,
   updatePluginHostSettings,
   updatePluginUserSettings,
@@ -122,6 +123,12 @@ function loadCurrentUser() {
   return currentUser;
 }
 
+interface SettingsChangeDetail {
+  pluginId: string;
+  scope: SettingsScope;
+  hostId?: number;
+}
+
 const SETTINGS_READERS: Record<
   SettingsScope,
   (pluginId: string, hostId?: number) => Promise<Record<string, unknown>>
@@ -245,15 +252,26 @@ export const pluginHostBridge: PluginHostBridge = {
     useEffect(() => {
       let cancelled = false;
       if (scope === "host" && !Number.isFinite(numericHostId)) return;
-      SETTINGS_READERS[scope](pluginId, numericHostId)
-        .then((values) => {
-          if (!cancelled) setState({ values, loaded: true });
-        })
-        .catch(() => {
-          if (!cancelled) setState((prev) => ({ ...prev, loaded: true }));
-        });
+      const read = () =>
+        SETTINGS_READERS[scope](pluginId, numericHostId)
+          .then((values) => {
+            if (!cancelled) setState({ values, loaded: true });
+          })
+          .catch(() => {
+            if (!cancelled) setState((prev) => ({ ...prev, loaded: true }));
+          });
+      void read();
+      // Saved from the settings page, which keeps its own copy of the form.
+      const onChanged = (event: Event) => {
+        const detail = (event as CustomEvent<SettingsChangeDetail>).detail;
+        if (detail?.pluginId !== pluginId || detail.scope !== scope) return;
+        if (scope === "host" && detail.hostId !== numericHostId) return;
+        void read();
+      };
+      window.addEventListener(PLUGIN_SETTINGS_CHANGED_EVENT, onChanged);
       return () => {
         cancelled = true;
+        window.removeEventListener(PLUGIN_SETTINGS_CHANGED_EVENT, onChanged);
       };
     }, [pluginId, scope, numericHostId]);
 

src/ui/plugins/PluginsTab.tsx

@@ -489,7 +489,8 @@ function InstalledCard({
           </span>
         </div>
       ) : !running ? (
-        <div className="border-t border-border bg-muted/20 px-3 py-2">
+        <div className="flex items-center gap-2 border-t border-border px-3 py-2">
+          <span className="size-1.5 shrink-0 bg-muted-foreground/40" />
           <span className="text-[11px] text-muted-foreground">
             {t("plugins.manager.status.disabled")}
           </span>

src/ui/settings/FeatureSettingsSections.tsx

@@ -14,7 +14,6 @@ import { AccordionSection } from "@/sidebar/AdminSettingsShared";
 import { pluginKey } from "@/lib/plugin-i18n";
 import { PluginIcon } from "@/lib/plugin-icon";
 import {
-  getPlugins,
   getPluginAdminSettings,
   getPluginUserSettings,
   updatePluginAdminSettings,
@@ -24,6 +23,7 @@ import {
   type PluginSettingsField,
   type PluginSummary,
 } from "@/api/plugins-api";
+import { useInstalledPlugins } from "@/hooks/use-installed-plugins";
 import { SettingsFieldRow } from "./SettingsFields";
 import { hasVisibleFields, isFieldShown } from "./settings-fields-util";
 
@@ -39,19 +39,7 @@ export function featureSectionId(pluginId: string): FeatureSectionId {
 export function useFeatureSettings(
   scope: FeatureSettingsScope,
 ): PluginSummary[] {
-  const [plugins, setPlugins] = useState<PluginSummary[]>([]);
-
-  useEffect(() => {
-    let cancelled = false;
-    void getPlugins()
-      .then((loaded) => {
-        if (!cancelled) setPlugins(loaded);
-      })
-      .catch(() => {});
-    return () => {
-      cancelled = true;
-    };
-  }, []);
+  const plugins = useInstalledPlugins();
 
   return useMemo(
     () =>

src/ui/settings/HostPluginSections.tsx

@@ -10,11 +10,12 @@
  * group does not appear as an empty tab.
  */
 
-import { useEffect, useMemo, useState } from "react";
+import { useMemo } from "react";
 import { useTranslation } from "react-i18next";
 import { SectionCard } from "@/components/section-card";
 import { PluginIcon } from "@/lib/plugin-icon";
-import { getPlugins, type PluginSummary } from "@/api/plugins-api";
+import { type PluginSummary } from "@/api/plugins-api";
+import { useInstalledPlugins } from "@/hooks/use-installed-plugins";
 import { usePluginScope } from "@/plugin-host/scope";
 import { SettingsFieldRow } from "./SettingsFields";
 import { hasVisibleFields, isFieldShown } from "./settings-fields-util";
@@ -24,21 +25,7 @@ export type HostPluginSettings = Record<string, Record<string, unknown>>;
 
 /** Enabled plugins declaring host-scope settings. */
 export function usePluginHostSections(): PluginSummary[] {
-  const [plugins, setPlugins] = useState<PluginSummary[]>([]);
-
-  useEffect(() => {
-    let cancelled = false;
-    void getPlugins()
-      .then((loaded) => {
-        if (!cancelled) setPlugins(loaded);
-      })
-      .catch(() => {
-        // Additive: the built-in host tabs do not depend on this.
-      });
-    return () => {
-      cancelled = true;
-    };
-  }, []);
+  const plugins = useInstalledPlugins();
 
   return useMemo(
     () =>

src/ui/sidebar/host-defaults/catalog.ts

@@ -3,7 +3,7 @@
  * running plugin's host fields that can have one.
  */
 
-import { useEffect, useMemo, useState } from "react";
+import { useMemo } from "react";
 import {
   CORE_HOST_DEFAULTS,
   CORE_NAMESPACE,
@@ -11,10 +11,10 @@ import {
   type HostDefaultsLevel,
 } from "@/types/host-defaults";
 import {
-  getPlugins,
   type PluginSettingsField,
   type PluginSummary,
 } from "@/api/plugins-api";
+import { useInstalledPlugins } from "@/hooks/use-installed-plugins";
 
 export interface EditorDefaultKey {
   fullKey: string;
@@ -71,18 +71,7 @@ export const CORE_EDITOR_KEYS: EditorDefaultKey[] = CORE_HOST_DEFAULTS.map(
 
 /** Every key, by full key. Refreshed when the plugin list is. */
 export function useEditorDefaultKeys(): Map<string, EditorDefaultKey> {
-  const [plugins, setPlugins] = useState<PluginSummary[]>([]);
-  useEffect(() => {
-    let cancelled = false;
-    void getPlugins()
-      .then((loaded) => {
-        if (!cancelled) setPlugins(loaded);
-      })
-      .catch(() => {});
-    return () => {
-      cancelled = true;
-    };
-  }, []);
+  const plugins = useInstalledPlugins();
   return useMemo(
     () =>
       new Map(

src/ui/tests/plugin-host/bridge.test.ts

@@ -1,5 +1,48 @@
-import { describe, expect, it } from "vitest";
-import { toHostRecord } from "@/plugin-host/bridge";
+import { afterEach, describe, expect, it, vi } from "vitest";
+import { act, cleanup, renderHook, waitFor } from "@testing-library/react";
+
+const getPluginUserSettings = vi.hoisted(() => vi.fn());
+
+vi.mock("@/api/plugins-api", async (importOriginal) => ({
+  ...(await importOriginal<typeof import("@/api/plugins-api")>()),
+  getPluginUserSettings,
+}));
+
+import { pluginHostBridge, toHostRecord } from "@/plugin-host/bridge";
+import { PLUGIN_SETTINGS_CHANGED_EVENT } from "@/api/plugins-api";
+
+afterEach(cleanup);
+
+function announce(pluginId: string, scope: string) {
+  act(() => {
+    window.dispatchEvent(
+      new CustomEvent(PLUGIN_SETTINGS_CHANGED_EVENT, {
+        detail: { pluginId, scope },
+      }),
+    );
+  });
+}
+
+describe("useSettings", () => {
+  it("reads again when the settings page saves the same plugin and scope", async () => {
+    getPluginUserSettings.mockResolvedValueOnce({ enabled: false });
+    const { result } = renderHook(() =>
+      pluginHostBridge.useSettings("ai", "user"),
+    );
+    await waitFor(() => expect(result.current.loaded).toBe(true));
+    expect(result.current.values).toEqual({ enabled: false });
+
+    getPluginUserSettings.mockResolvedValue({ enabled: true });
+    announce("other", "user");
+    announce("ai", "admin");
+    expect(getPluginUserSettings).toHaveBeenCalledTimes(1);
+
+    announce("ai", "user");
+    await waitFor(() =>
+      expect(result.current.values).toEqual({ enabled: true }),
+    );
+  });
+});
 
 describe("toHostRecord", () => {
   it("copies only the fields the SDK types", () => {

src/ui/tests/settings/FeatureSettingsSections.test.tsx

@@ -106,6 +106,22 @@ describe("useFeatureSettings", () => {
     await waitFor(() => expect(api.getPlugins).toHaveBeenCalled());
     expect(result.current).toEqual([]);
   });
+
+  it("picks up a feature enabled while it is open", async () => {
+    api.getPlugins.mockResolvedValue([
+      plugin({ id: "late", name: "Late", enabled: false }),
+    ]);
+    const { result } = renderHook(() => useFeatureSettings("user"));
+    await waitFor(() => expect(api.getPlugins).toHaveBeenCalledTimes(1));
+    expect(result.current).toEqual([]);
+
+    api.getPlugins.mockResolvedValue([plugin({ id: "late", name: "Late" })]);
+    window.dispatchEvent(new CustomEvent("termix:plugins-changed"));
+
+    await waitFor(() =>
+      expect(result.current.map((p) => p.id)).toEqual(["late"]),
+    );
+  });
 });
 
 describe("FeatureSettingsSection", () => {

src/ui/tests/settings/host-feature-tabs.test.tsx

@@ -28,6 +28,7 @@ import { withPluginScope } from "@/plugin-host/scope";
 
 const getPlugins = vi.fn();
 vi.mock("@/api/plugins-api", () => ({
+  PLUGINS_CHANGED_EVENT: "termix:plugins-changed",
   getPlugins: () => getPlugins(),
 }));