Merge feature/window-audio-submodule into master

Brings in:
- Custom Electron v39.2.7 with enhanced WebRTC features
- Window audio capture submodule reference
- Mac fixes, deep link support, top drag bar
- Various sync and process fixes

Kept HEVC/H.265 documentation note from master.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

Author: steveseguin

.gitignore

@@ -1,5 +1,8 @@
+CLAUDE.md
 /build
 /dist
 /node_modules
-/native-modules
+/native-modules/*
+!/native-modules/window-audio-capture
 mac.sh
+/vdoninja

.gitmodules

@@ -0,0 +1,3 @@
+[submodule "window-audio-capture"]
+	path = native-modules/window-audio-capture
+url = git@github.com:steveseguin/window-audio-capture-plugin.git

afterSign.js

@@ -1,6 +1,5 @@
 const fs = require('fs');
 const path = require('path');
-var electron_notarize = require('electron-notarize');
 
 module.exports = async function (params) {
     console.log('afterSign hook triggered', params);
@@ -11,6 +10,14 @@ module.exports = async function (params) {
         return;
     }
 
+    let electronNotarize;
+    try {
+        electronNotarize = require('electron-notarize');
+    } catch (error) {
+        console.warn('electron-notarize not available; skipping notarization.');
+        return;
+    }
+
     // Same appId in electron-builder.
     let appId = 'ninja.vdo'
 
@@ -22,7 +29,7 @@ module.exports = async function (params) {
     console.log(`Notarizing ${appId} found at ${appPath}`);
 
     try {
-        await electron_notarize.notarize({
+        await electronNotarize.notarize({
             appBundleId: appId,
             appPath: appPath,
             appleId: process.env.appleId,