Feat: add persisted account theme settings

Frontend/src/components/app-shell/data/app-shell.context.tsx

@@ -1,14 +1,8 @@
 // Path: Frontend/src/components/app-shell/data/app-shell.context.tsx
 
-import {
-	createContext,
-	createMemo,
-	createSignal,
-	onMount,
-	useContext,
-	type JSX,
-} from "solid-js";
+import { createContext, createMemo, createSignal, onMount, useContext, type JSX } from "solid-js";
 import { resolveAPIBase } from "../../../lib/api";
+import { applyThemePresetById, resolvePreferredThemePresetId } from "../../../helper/themeRuntime";
 import {
 	buildActiveDepartment,
 	buildActiveProject,
@@ -56,7 +50,13 @@ export const AppShellDataProvider = (props: { children: JSX.Element }): JSX.Elem
 				throw new Error(errorMessage || "Failed to load app shell state.");
 			}
 
-			setPayload(normalizeAppShellPayload(body.data));
+			const normalizedPayload = normalizeAppShellPayload(body.data);
+			const persistedThemePresetId = normalizedPayload.admin?.themePresetId?.trim();
+			if (persistedThemePresetId && persistedThemePresetId !== resolvePreferredThemePresetId()) {
+				await applyThemePresetById(persistedThemePresetId);
+			}
+
+			setPayload(normalizedPayload);
 			setStatus("success");
 		} catch (loadError) {
 			setStatus("error");
@@ -72,6 +72,7 @@ export const AppShellDataProvider = (props: { children: JSX.Element }): JSX.Elem
 		status,
 		error,
 		installation: createMemo(() => payload()?.installation),
+		admin: createMemo(() => payload()?.admin),
 		railItems: createMemo(() => buildRailItems(payload())),
 		activeServer: createMemo(() => buildActiveServer(payload())),
 		activeProject: createMemo(() => buildActiveProject(payload())),

Frontend/src/components/app-shell/data/app-shell.types.ts

@@ -30,6 +30,7 @@ export type AppShellAdmin = {
 	displayName: string;
 	isInstanceAdmin: boolean;
 	homeTitle: string;
+	themePresetId?: string;
 };
 
 export type AppShellOrganization = {
@@ -87,6 +88,7 @@ export type AppShellContextValue = {
 	status: Accessor<"idle" | "loading" | "success" | "error">;
 	error: Accessor<string>;
 	installation: Accessor<AppShellInstallation | undefined>;
+	admin: Accessor<AppShellAdmin | undefined>;
 	railItems: Accessor<readonly RailItem[]>;
 	activeServer: Accessor<ActiveServer>;
 	activeProject: Accessor<ActiveProject>;