Add the browser version, a toolbar, description previews and hints

Browser version
- Self-hosted proxy (server/) that serves the web build and bridges WebSocket
  connections to Mumble servers over TLS, with a server allowlist or allow-any mode
- WebSocket transport and a browser platform layer; identities live in the browser
- npm run build:web, dev:web, proxy and test:e2e:web; proxy unit tests

Interface
- Toolbar next to mute and deafen: description editor, settings, expand or collapse all
- Channels with a description show a marker; resting on the row previews it
- Collapse all keeps channels with people open
- Hints (title tooltips) can be switched on in a new Accessibility settings tab
- New identities can set the username suggested when connecting
- Own user information tells the client address from the one the server sees

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

package-lock.json

@@ -18,6 +18,7 @@
         "@tsconfig/svelte": "^5.0.8",
         "@types/node": "^26.6.3",
         "@types/node-forge": "^1.3.14",
+        "@types/ws": "^8.18.2",
         "electron": "^44.5.1",
         "electron-builder": "^26.15.3",
         "esbuild": "^0.28.2",
@@ -26,7 +27,8 @@
         "svelte": "^5.57.1",
         "svelte-check": "^4.7.6",
         "typescript": "^6.0.3",
-        "vite": "^8.3.1"
+        "vite": "^8.3.1",
+        "ws": "^8.22.0"
       }
     },
     "node_modules/@babel/helper-string-parser": {
@@ -1513,6 +1515,16 @@
       "license": "MIT",
       "optional": true
     },
+    "node_modules/@types/ws": {
+      "version": "8.18.2",
+      "resolved": "https://registry.npmjs.org/@types/ws/-/ws-8.18.2.tgz",
+      "integrity": "sha512-67MQl+fpWKVTT1NYdnmo3U4sc/xPo/zQBncVnI74qmQa0z/b+1g6iYqNmGCPbxO+zz2aklb08a0oHfegiVd0/w==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "@types/node": "*"
+      }
+    },
     "node_modules/@xmldom/xmldom": {
       "version": "0.8.15",
       "resolved": "https://registry.npmjs.org/@xmldom/xmldom/-/xmldom-0.8.15.tgz",
@@ -5736,6 +5748,28 @@
       "dev": true,
       "license": "ISC"
     },
+    "node_modules/ws": {
+      "version": "8.22.0",
+      "resolved": "https://registry.npmjs.org/ws/-/ws-8.22.0.tgz",
+      "integrity": "sha512-Ydggc987+RO0AnWtZ/7Wq9FtNvcrL1b/RO0ud9mWjUPgDrsAAwQSF51sm2hm1XofbU/4jkpGEsLFsZZxU+1DOg==",
+      "dev": true,
+      "license": "MIT",
+      "engines": {
+        "node": ">=10.0.0"
+      },
+      "peerDependencies": {
+        "bufferutil": "^4.0.1",
+        "utf-8-validate": ">=5.0.2"
+      },
+      "peerDependenciesMeta": {
+        "bufferutil": {
+          "optional": true
+        },
+        "utf-8-validate": {
+          "optional": true
+        }
+      }
+    },
     "node_modules/xmlbuilder": {
       "version": "15.1.1",
       "resolved": "https://registry.npmjs.org/xmlbuilder/-/xmlbuilder-15.1.1.tgz",