Screenshare: auto-pick game window, remember Vesktop stream audio

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

patches/vesktop-remember-stream-audio.patch

@@ -0,0 +1,67 @@
+--- a/src/renderer/components/ScreenSharePicker.tsx
++++ b/src/renderer/components/ScreenSharePicker.tsx
+@@ -31,7 +31,14 @@
+     useForceUpdater
+ } from "@vencord/types/utils";
+ import { onceReady } from "@vencord/types/webpack";
+-import { FluxDispatcher, MediaEngineStore, Select, UserStore, useState } from "@vencord/types/webpack/common";
++import {
++    FluxDispatcher,
++    MediaEngineStore,
++    Select,
++    useEffect,
++    UserStore,
++    useState
++} from "@vencord/types/webpack/common";
+ import { Node } from "@vencord/venmic";
+ import type { Dispatch, SetStateAction } from "react";
+ import { addPatch } from "renderer/patches/shared";
+@@ -590,6 +597,21 @@
+     const hasPipewirePulse = sources.ok ? sources.hasPipewirePulse : true;
+     const [ignorePulseWarning, setIgnorePulseWarning] = useState(false);
+ 
++    // Once the first source list arrives, preselect whichever of the last
++    // stream's audio sources are running again (e.g. the same game).
++    const [restored, setRestored] = useState(false);
++    useEffect(() => {
++        if (restored || loading || !sources.ok) return;
++        setRestored(true);
++
++        const last = State.store.screenshareAudio;
++        if (includeSources !== "None" || !last || last === "None") return;
++        if (last === "Entire System") return setIncludeSources(last);
++
++        const running = last.filter(l => sources.targets.some(t => hasMatchingProps(l, t)));
++        if (running.length) setIncludeSources(running);
++    }, [loading]);
++
+     if (!sources.ok && sources.isGlibCxxOutdated) {
+         return (
+             <Paragraph>
+@@ -746,6 +768,7 @@
+                     disabled={!selected}
+                     onClick={() => {
+                         currentSettings = settings;
++                        if (isLinux) State.store.screenshareAudio = settings.includeSources;
+                         try {
+                             const frameRate = Number(qualitySettings.frameRate);
+                             const height = Number(qualitySettings.resolution);
+--- a/src/renderer/settings.ts
++++ b/src/renderer/settings.ts
+@@ -4,6 +4,7 @@
+  * SPDX-License-Identifier: GPL-3.0-or-later
+  */
+ 
++import type { Node } from "@vencord/venmic";
+ import { useEffect, useReducer } from "@vencord/types/webpack/common";
+ import { SettingsStore } from "shared/utils/SettingsStore";
+ 
+@@ -37,6 +38,8 @@
+         resolution: string;
+         frameRate: string;
+     };
++    // audio sources picked for the last stream, preselected when running again
++    screenshareAudio?: "None" | "Entire System" | Node[];
+ }
+ 
+ const stateKey = "VesktopState";