feat(desktop): deliver font settings to plugin sandboxes

apps/desktop/src/components/plugins/PluginWorkbenchHost.vue

@@ -5,6 +5,7 @@ import * as api from "@/lib/backend/api";
 import { isTauriRuntime } from "@/lib/backend/tauriRuntime";
 import { copyToClipboard } from "@/lib/common/clipboard";
 import { PluginHostBridge, pluginSandboxDocument, type PluginBridgeTheme, type PluginSaveFileRequest, type PluginSaveFileResult, type PluginWorkbenchContext } from "@/lib/plugins/pluginHostBridge";
+import { buildPluginEditorAppearance } from "@/lib/plugins/pluginAppearance";
 import type { InstalledPlugin, PluginWorkbenchContribution } from "@/types/database";
 import { useI18n } from "vue-i18n";
 import { useTheme } from "@/composables/useTheme";
@@ -59,7 +60,11 @@ function currentBridgeTheme(): PluginBridgeTheme {
       }
     }
   }
-  return { appearance: isDark.value ? "dark" : "light", tokens };
+  return {
+    appearance: isDark.value ? "dark" : "light",
+    tokens,
+    editor: buildPluginEditorAppearance(settingsStore.editorSettings),
+  };
 }
 
 function createBridge() {
@@ -249,11 +254,11 @@ watch(appLocale, (locale) => bridge?.updateLocale(locale));
 // path — dark/light, palette switch, custom colors — re-pushes the resolved
 // tokens; watching isDark/custom colors alone misses palette-only switches.
 watch(themeRevision, () => bridge?.updateTheme(currentBridgeTheme()));
-// Font settings are applied outside applyTheme() (see App.vue applyUiFontFamily)
-// and therefore never bump themeRevision; watch them explicitly so font token
-// changes reach live plugin bridges without waiting for the next theme switch.
+// Font families are mirrored onto root tokens by App.vue (writeRootToken) and
+// reach live bridges through the themeRevision bump above. fontSize and the
+// SQL editor syntax theme have no CSS-token carrier — watch them explicitly.
 watch(
-  () => [settingsStore.editorSettings.uiFontFamily, settingsStore.editorSettings.fontFamily, settingsStore.editorSettings.fontSize],
+  () => [settingsStore.editorSettings.fontSize, settingsStore.editorSettings.theme],
   () => bridge?.updateTheme(currentBridgeTheme()),
 );