feat(alternatives): add Teleparty & Screen Sharing comparison pages with i18n

- Add article-style comparison pages for Teleparty and Screen Sharing
- Replace comparison tables with honest prose sections
- Add 15-language hreflang alternates and sitemap entries
- Add English locale fallback for untranslated languages
- Replace placeholder Draft copy with real English and German text
- Remove old Draft locale keys from all 13 non-EN/DE locales
- Rebuild outputs with zero TODO/Draft/noindex issues

website/locales/en.json

@@ -176,5 +176,32 @@
   "FOOTER_LEGAL_LINK": "imprint",
   "FOOTER_PRIVACY_LINK": "privacy",
   "FOOTER_DISCLAIMER": "KoalaSync is not affiliated with, endorsed by, or associated with Netflix, Disney+, Amazon, YouTube, Twitch, or any other streaming platform. All trademarks are property of their respective owners.",
-  "FOOTER_SUPPORT": "Support KoalaSync"
+  "FOOTER_SUPPORT": "Support KoalaSync",
+  "ALT_TELEPARTY_TITLE": "KoalaSync vs Teleparty: which watch party tool should you use?",
+  "ALT_TELEPARTY_META_DESC": "A practical comparison of KoalaSync and Teleparty for watch parties, built-in chat, mobile support, browser video sync, self-hosted media servers and open-source use.",
+  "ALT_TELEPARTY_INTRO": "KoalaSync and Teleparty both help with the same annoying problem: watching something together without doing the whole \"3, 2, 1, play\" routine. They just take a different approach.<br><br>Teleparty makes the most sense if you want a built-in chat or if you want to watch on mobile. KoalaSync is more for desktop browser watch parties where you are already talking on Discord, Teamspeak or another voice call and just want playback to stay in sync.<br><br>The main reason I built KoalaSync was flexibility. It is meant to work with almost any website that uses a normal browser video player, not just a fixed list of platforms. That includes self-hosted setups like Emby, Jellyfin and Plex, local/private domains, and a lot of normal video pages in the browser.",
+  "ALT_TELEPARTY_WHEN_TELE_TITLE": "When Teleparty may still make sense",
+  "ALT_TELEPARTY_WHEN_TELE_BODY": "Teleparty can still be the better choice if you want the chat to be part of the watch party tool itself. KoalaSync does not currently have a built-in chat. It assumes you are already talking somewhere else, like Discord, Teamspeak, WhatsApp, Signal or a normal call.<br><br>Mobile is the other big reason. Teleparty has an app, while KoalaSync currently only works on desktop browsers. If you want to sync Netflix on a phone or tablet, KoalaSync is not the right tool for that right now.<br><br>So if chat and mobile support are the things you care about most, Teleparty may simply fit your setup better.",
+  "ALT_TELEPARTY_WHEN_KOALA_TITLE": "When KoalaSync may fit better",
+  "ALT_TELEPARTY_WHEN_KOALA_BODY": "KoalaSync fits better if you want a flexible desktop browser sync tool instead of something tied to a short platform list.<br><br>It works with almost any website that uses a normal browser video player. That is especially useful for Emby, Jellyfin, Plex, private media servers, local domains, or smaller video sites that classic watch party tools usually ignore.<br><br>It is also free, open source, does not require accounts, and can be self-hosted if you want to run your own relay. I built it because I wanted something privacy-friendly that worked with my own Emby setup, not another closed platform just for a few big streaming sites.",
+  "ALT_TELEPARTY_MAIN_DIFF_TITLE": "The main difference",
+  "ALT_TELEPARTY_MAIN_DIFF_BODY": "Teleparty is more of a watch party product with chat and mobile support. KoalaSync is more of a flexible sync layer for browser video.<br><br>That sounds like a small difference, but it changes the use case a lot. If you need a full watch party app with chat inside it, Teleparty makes sense. If you already have voice chat and just want the video controls to stay synced across browsers, KoalaSync is the simpler fit.",
+  "ALT_TELEPARTY_LIMITS_TITLE": "Honest limitations",
+  "ALT_TELEPARTY_LIMITS_BODY": "KoalaSync is not magic and it is not trying to hide its limits. It currently works only on desktop browsers. It has no built-in chat and no mobile app.<br><br>Compatibility also depends on the browser and the video player. KoalaSync should work with almost any normal browser video player, but websites can change their players, DRM behavior or browser restrictions at any time.<br><br>KoalaSync is not affiliated with Netflix, Disney+, Prime Video, YouTube, Teleparty, Emby, Jellyfin, Plex or any other brand mentioned here. The names are only used to explain typical use cases.",
+  "ALT_TELEPARTY_SUMMARY_TITLE": "Summary",
+  "ALT_TELEPARTY_SUMMARY_BODY": "If you want built-in chat or mobile support, Teleparty may be the better fit. If you want free, open-source desktop browser sync that works with almost any normal video player, including self-hosted media servers like Emby, Jellyfin and Plex, KoalaSync is probably the better match.",
+  "ALT_SCREEN_TITLE": "KoalaSync vs screen sharing: when is video sync better?",
+  "ALT_SCREEN_META_DESC": "A practical comparison of KoalaSync and screen sharing for remote movie nights, playback control, video quality, privacy, subtitles and browser-based watching.",
+  "ALT_SCREEN_INTRO": "Screen sharing works, and sometimes it is honestly enough. One person shares their screen, everyone else watches, and you are done.<br><br>But for longer movie nights or watching episodes together, it can get annoying. The video quality depends on the sharer\u2019s upload, CPU, browser, and whatever compression Discord, Teamspeak, Zoom or another call app applies. Also, only one person really controls the playback.",
+  "ALT_SCREEN_WHEN_ENOUGH_TITLE": "When screen sharing is enough",
+  "ALT_SCREEN_WHEN_ENOUGH_BODY": "Screen sharing is fine when you want the fastest possible setup. If only one person has access to the video, or everyone is okay with one person controlling play, pause and seeking, it may be the simplest option.<br><br>It also makes sense when quality is not a big deal, when nobody needs their own subtitles or audio settings, and when the person sharing is comfortable showing that browser window or screen.",
+  "ALT_SCREEN_WHEN_ANNOYING_TITLE": "Where screen sharing gets annoying",
+  "ALT_SCREEN_WHEN_ANNOYING_BODY": "The biggest downside is that not everyone is watching in their own player. One person streams their screen, and everyone else only sees that stream.<br><br>That can mean worse video quality, compressed audio, delayed playback, and less control for everyone else. Subtitles and audio tracks are also whatever the sharer picked.<br><br>There is also the privacy side. If you switch windows or tabs, people may briefly see your browser tabs, email, Reddit, chats or other private stuff. You can work around that with a separate window, but it is still something you have to think about.",
+  "ALT_SCREEN_WHY_CLEANER_TITLE": "Why KoalaSync can feel cleaner",
+  "ALT_SCREEN_WHY_CLEANER_BODY": "KoalaSync does not stream your screen. Everyone watches the video locally in their own browser, and KoalaSync only keeps playback actions like play, pause and seeking in sync.<br><br>That means everyone can use fullscreen on their own device, use their own subtitle or audio settings if the player supports it, and keep the voice chat separate in Discord, Teamspeak or another call.<br><br>For movie nights, that can feel a lot cleaner than one person broadcasting their screen. It is especially useful for browser-based setups like Emby, Jellyfin, Plex, local files opened in the browser, private domains, or other websites with normal browser video players.",
+  "ALT_SCREEN_LIMITS_TITLE": "Honest limitations",
+  "ALT_SCREEN_LIMITS_BODY": "KoalaSync is not a replacement for a voice call. If you want to talk while watching, you still use Discord, Teamspeak, Signal, WhatsApp or whatever you normally use.<br><br>Everyone also needs access to the video or page on their own device. KoalaSync does not bypass subscriptions, logins, DRM, regional restrictions or platform rules.<br><br>It is currently desktop-browser only, has no built-in chat or voice feature, and compatibility always depends on the browser and the video player.",
+  "ALT_SCREEN_SUMMARY_TITLE": "Summary",
+  "ALT_SCREEN_SUMMARY_BODY": "Screen sharing is the simplest option when you just want something quick and do not care much about quality, privacy or individual control. KoalaSync is a better fit when everyone should watch locally in their own browser and the session should feel more like actually watching together.",
+  "ALT_TRY_KOALASYNC": "Try KoalaSync"
 }