Add GStreamer codec docs, fix connection indicator reactivity

Add GStreamer codec dependencies to PKGBUILD and install instructions
to README for Linux video/audio playback. Add periodic relay pool
status check so connection indicator stays accurate after reconnects.

PKGBUILD

@@ -11,6 +11,9 @@ depends=(
     'gtk3'
     'libayatana-appindicator'
     'openssl'
+    'gst-plugins-base'
+    'gst-plugins-good'
+    'gst-libav'
 )
 makedepends=(
     'rust'

README.md

@@ -19,6 +19,18 @@ Grab the latest release from the [Releases page](https://github.com/hoornet/wrys
 
 **Windows note:** The installer is not yet code-signed. Windows SmartScreen will show an "Unknown publisher" warning — click "More info → Run anyway" to install.
 
+**Linux note:** Video and audio playback requires GStreamer codec packages. The AUR package installs these automatically. For `.deb`/`.rpm` installs, you may need:
+```bash
+# Arch / Manjaro
+sudo pacman -S gst-plugins-base gst-plugins-good gst-libav
+
+# Ubuntu / Debian
+sudo apt install gstreamer1.0-plugins-base gstreamer1.0-plugins-good gstreamer1.0-libav
+
+# Fedora
+sudo dnf install gstreamer1-plugins-base gstreamer1-plugins-good gstreamer1-libav
+```
+
 ## Features
 
 **Identity & accounts**

src/stores/feed.ts

@@ -28,6 +28,18 @@ export const useFeedStore = create<FeedState>((set, get) => ({
       set({ error: null });
       await connectToRelays();
       set({ connected: true });
+
+      // Monitor relay connectivity — update status if all relays disconnect
+      const ndk = getNDK();
+      const checkConnection = () => {
+        const relays = Array.from(ndk.pool?.relays?.values() ?? []);
+        const hasConnected = relays.some((r) => r.connected);
+        if (get().connected !== hasConnected) {
+          set({ connected: hasConnected });
+        }
+      };
+      // Re-check periodically (relay reconnects, disconnects)
+      setInterval(checkConnection, 5000);
     } catch (err) {
       set({ error: `Connection failed: ${err}` });
     }