feat: reorganize admin settings with tabbed interface and documentation

- Reorganized admin settings into tabbed interface (General, Security, Payment Methods)
- Vertical tabs on desktop, horizontal scrollable on mobile
- Moved Payment Methods from separate menu to Settings tab
- Fixed admin profile reuse and dashboard blocking
- Fixed maintenance mode guard to use AppConfig model
- Added admin auto-redirect after login (admins → /admin, users → /)
- Reorganized documentation into docs/ folder structure
- Created comprehensive README and documentation index
- Added PWA and Web Push notifications to to-do list

apps/api/dist/common/decorators/skip-maintenance.decorator.d.ts

@@ -0,0 +1 @@
+export declare const SkipMaintenance: () => import("@nestjs/common").CustomDecorator<string>;

apps/api/dist/common/decorators/skip-maintenance.decorator.js

@@ -0,0 +1,7 @@
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.SkipMaintenance = void 0;
+const common_1 = require("@nestjs/common");
+const SkipMaintenance = () => (0, common_1.SetMetadata)('skipMaintenance', true);
+exports.SkipMaintenance = SkipMaintenance;
+//# sourceMappingURL=skip-maintenance.decorator.js.map

apps/api/dist/common/decorators/skip-maintenance.decorator.js.map

@@ -0,0 +1 @@
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