chore(lotus): clear pre-existing lint/prettier debt ahead of the CI gate

`pnpm lint:eslint` and `pnpm prettier:check` were never run by fork CI (#5),
and lotus HEAD failed both: a missing return type in lotusDecorations, a
type-only import in lotusWidget, and formatting drift in lotusAudioInject,
lotusFocus, lotusWidget and .gitea/workflows/ci.yml. No behaviour change.
Both gates now pass clean so they can be turned on.

Refs #5

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01PPmy3tPq869XDW4njjVaKA

.gitea/workflows/ci.yml

@@ -16,13 +16,13 @@ name: CI
 on:
   push:
     branches: [lotus]
-    tags: ['v*']
+    tags: ["v*"]
   pull_request:
     branches: [lotus]
 
 env:
   # element-call's build:full sets 16384 already; keep parity for safety.
-  NODE_OPTIONS: '--max-old-space-size=16384'
+  NODE_OPTIONS: "--max-old-space-size=16384"
   # Stamp the build so analytics/rageshakes aren't labelled "dev".
   VITE_APP_VERSION: ${{ github.ref_name }}
 
@@ -37,10 +37,10 @@ jobs:
       - name: Setup Node.js
         uses: actions/setup-node@v4
         with:
-          node-version-file: '.node-version' # Node 24
+          node-version-file: ".node-version" # Node 24
           # registry-url wires up the Gitea-scoped registry + auth for publish
-          registry-url: 'https://code.lotusguild.org/api/packages/LotusGuild/npm/'
-          scope: '@lotusguild'
+          registry-url: "https://code.lotusguild.org/api/packages/LotusGuild/npm/"
+          scope: "@lotusguild"
 
       - name: Enable corepack (pnpm from packageManager field)
         run: corepack enable
@@ -88,9 +88,9 @@ jobs:
       - name: Setup Node.js
         uses: actions/setup-node@v4
         with:
-          node-version-file: '.node-version'
-          registry-url: 'https://code.lotusguild.org/api/packages/LotusGuild/npm/'
-          scope: '@lotusguild'
+          node-version-file: ".node-version"
+          registry-url: "https://code.lotusguild.org/api/packages/LotusGuild/npm/"
+          scope: "@lotusguild"
 
       - name: Enable corepack
         run: corepack enable

src/lotus/lotusAudioInject.ts

@@ -240,7 +240,10 @@ async function playInjectedClip(
   const durationMs = Number.isFinite(buffer.duration)
     ? buffer.duration * 1000 + 500
     : MAX_CLIP_MS;
-  const guard = setTimeout(cleanup, Math.min(MAX_CLIP_MS, Math.max(0, durationMs)));
+  const guard = setTimeout(
+    cleanup,
+    Math.min(MAX_CLIP_MS, Math.max(0, durationMs)),
+  );
   source.addEventListener("ended", () => clearTimeout(guard));
 
   source.start();

src/lotus/lotusDecorations.ts

@@ -84,7 +84,7 @@ export function startLotusDecorations(): () => void {
       emit();
     };
     w.lazyActions.on(LotusWidgetActions.Decorations, handler);
-    unregister = () =>
+    unregister = (): void =>
       w.lazyActions.off(LotusWidgetActions.Decorations, handler);
   }
   registrations += 1;

src/lotus/lotusFocus.ts

@@ -38,6 +38,5 @@ export function startLotusFocus(vm: CallViewModel): () => void {
   };
 
   w.lazyActions.on(LotusWidgetActions.FocusParticipant, handler);
-  return () =>
-    w.lazyActions.off(LotusWidgetActions.FocusParticipant, handler);
+  return () => w.lazyActions.off(LotusWidgetActions.FocusParticipant, handler);
 }

src/lotus/lotusWidget.ts

@@ -17,7 +17,7 @@ Please see LICENSE in the repository root for full details.
 import { logger } from "matrix-js-sdk/lib/logger";
 
 import { widget } from "../widget";
-import { LotusWidgetActions } from "./lotusActions";
+import { type LotusWidgetActions } from "./lotusActions";
 
 export { LotusWidgetActions } from "./lotusActions";
 
@@ -33,7 +33,9 @@ export function lotusParam(name: string): string | null {
     // Match EC's own ParamParser precedence: the hash fragment wins over the
     // query string. So seed from the fragment first, then fill gaps from query.
     const hash = window.location.hash.replace(/^#\/?/, "");
-    const hashQuery = hash.includes("?") ? hash.slice(hash.indexOf("?") + 1) : "";
+    const hashQuery = hash.includes("?")
+      ? hash.slice(hash.indexOf("?") + 1)
+      : "";
     cachedParams = new URLSearchParams(hashQuery);
     for (const [k, v] of new URLSearchParams(window.location.search)) {
       if (!cachedParams.has(k)) cachedParams.append(k, v);
@@ -53,10 +55,15 @@ export function lotusFlag(name: string): boolean {
  * rejection when the host hasn't (yet) registered a handler for it. Returns
  * true if the widget transport was available to attempt the send.
  */
-export function lotusSendToHost(action: LotusWidgetActions, data: unknown): boolean {
+export function lotusSendToHost(
+  action: LotusWidgetActions,
+  data: unknown,
+): boolean {
   const api = widget?.api;
   if (!api) return false;
-  void api.transport.send(action, data as Record<string, unknown>).catch((e) => {
+  void api.transport
+    .send(action, data as Record<string, unknown>)
+    .catch((e) => {
       logger.debug(`[lotus] host did not ack ${action}`, e);
     });
   return true;