ci: GitLab-Pipeline - build_embedded + manueller npm-Publish nach rohana (threadnet-call#1)

Registry-Entscheidung evidenzbasiert: das Package ist pnpm-Dependency von
ThreadNet-Webs apps/web, der Lockfile pinnt die Tarball-URL auf rohana -
Registry bleibt dort. Publish-Auth ueber CI-Variable GITEA_NPM_TOKEN statt
lokaler Klartext-.npmrc.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

vite-embedded.config.ts

@@ -0,0 +1,64 @@
+/*
+Copyright 2025 New Vector Ltd.
+
+SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-Element-Commercial
+Please see LICENSE in the repository root for full details.
+*/
+
+import { defineConfig, mergeConfig } from "vite";
+import generateFile from "vite-plugin-generate-file";
+
+import fullConfig from "./vite.config";
+
+const base = "./";
+
+// Config for embedded deployments (possibly hosted under a non-root path)
+export default defineConfig((env) =>
+  mergeConfig(
+    fullConfig({ ...env, packageType: "embedded" }),
+    defineConfig({
+      base, // Use relative URLs to allow the app to be hosted under any path
+      publicDir: false, // Don't serve the public directory which only contains the favicon
+      plugins: [
+        generateFile([
+          {
+            type: "json",
+            output: "./config.json",
+            data: {
+              matrix_rtc_session: {
+                wait_for_key_rotation_ms: 5000,
+                delayed_leave_event_restart_ms: 4000,
+                delayed_leave_event_delay_ms: 18000,
+              },
+              media_quality: {
+                // h264 uses classic simulcast (like vp8), not SVC, so it's compatible
+                // with buildPublishOptions()'s simulcast-shaped layers without a code
+                // fix - unlike vp9/av1 (see 2026-07-28 incident: forcing vp9 broke calls
+                // entirely, likely due to that SVC/simulcast mismatch). h264 also tends
+                // to be hardware-accelerated on more devices (notably iOS/Safari).
+                video_codec: "h264",
+                video: {
+                  max_resolution: 1440,
+                  max_bitrate: 8_000_000,
+                  max_framerate: 60,
+                  // Without this, the code default is only [180p, 360p] - a huge quality
+                  // cliff straight to blocky 360p on any minor network hiccup instead of
+                  // gracefully stepping down. Added a 720p middle rung.
+                  simulcast_layers: [
+                    { height: 180, bitrate: 150_000 },
+                    { height: 720, bitrate: 2_500_000 },
+                  ],
+                },
+                screen_share: {
+                  max_resolution: 1440,
+                  max_bitrate: 6_000_000,
+                  max_framerate: 30,
+                },
+              },
+            },
+          },
+        ]),
+      ],
+    }),
+  ),
+);