chore: upgrade i18next 26, prettier 3, fontsource-variable, domhandler 6, lint-staged 17

- i18next 23->26 + react-i18next 15->17
- prettier 2->3, reformat all files
- replace @fontsource/inter with @fontsource-variable/inter 5, update import path
- domhandler 5->6 (aligns with transitive deps)
- lint-staged 16->17

src/app/cs-api.ts

@@ -28,13 +28,13 @@ export type AutoDiscoveryInfo = Record<string, unknown> & {
     {
       livekit_service_url: string;
       type: 'livekit';
-    }
+    },
   ];
 };
 
 export const autoDiscovery = async (
   request: typeof fetch,
-  server: string
+  server: string,
 ): Promise<[AutoDiscoveryError, undefined] | [undefined, AutoDiscoveryInfo]> => {
   const host = /^https?:\/\//.test(server) ? trimTrailingSlash(server) : `https://${server}`;
   const autoDiscoveryUrl = `${host}/.well-known/matrix/client`;
@@ -99,7 +99,7 @@ export const autoDiscovery = async (
   content['m.homeserver'].base_url = trimTrailingSlash(baseUrl);
   if (content['m.identity_server']) {
     content['m.identity_server'].base_url = trimTrailingSlash(
-      content['m.identity_server'].base_url
+      content['m.identity_server'].base_url,
     );
   }
 
@@ -112,7 +112,7 @@ export type SpecVersions = {
 };
 export const specVersions = async (
   request: typeof fetch,
-  baseUrl: string
+  baseUrl: string,
 ): Promise<SpecVersions> => {
   const res = await request(`${trimTrailingSlash(baseUrl)}/_matrix/client/versions`);