Integrate ffprobe symlink into 20-folders.sh, bump to 4.0.16.2946-3

Move the ffprobe symlink logic from the separate 21-ffprobe.sh into the
existing 20-folders.sh init script and remove the standalone file.
Update changelog and bump version.

Fixes https://github.com/alexbelgium/hassio-addons/issues/2451

Co-authored-by: alexbelgium <44178713+alexbelgium@users.noreply.github.com>

sonarr/CHANGELOG.md

@@ -1,4 +1,7 @@
 
+## 4.0.16.2946-3 (2026-02-25)
+- Symlink system ffprobe to /app/sonarr/bin/ where Sonarr expects it (fixes https://github.com/alexbelgium/hassio-addons/issues/2451)
+
 ## 4.0.16.2946-2 (2026-02-06)
 - Add ffmpeg to provide ffprobe for runtime detection (fixes https://github.com/alexbelgium/hassio-addons/issues/2451)
 

sonarr/config.yaml

@@ -110,4 +110,4 @@ schema:
 slug: sonarr_nas
 udev: true
 url: https://github.com/alexbelgium/hassio-addons/tree/master/sonarr
-version: "4.0.16.2946-2"
+version: "4.0.16.2946-3"

sonarr/rootfs/etc/cont-init.d/20-folders.sh

@@ -25,3 +25,11 @@ fi
 if [ -d /config/addons_config ]; then
     rm -rf /config/addons_config
 fi
+
+# Sonarr v4 looks for ffprobe in its own binary directory (/app/sonarr/bin/)
+# via GlobalFFOptions.Configure(options => options.BinaryFolder = AppDomain.CurrentDomain.BaseDirectory)
+# Symlink the system-installed ffprobe there so Sonarr can find a working copy
+if [ -f /usr/bin/ffprobe ] && [ -d /app/sonarr/bin ]; then
+    ln -sf /usr/bin/ffprobe /app/sonarr/bin/ffprobe
+    echo "Symlinked /usr/bin/ffprobe to /app/sonarr/bin/ffprobe"
+fi

sonarr/rootfs/etc/cont-init.d/21-ffprobe.sh

@@ -1,12 +0,0 @@
-#!/usr/bin/with-contenv bashio
-# shellcheck shell=bash
-set -e
-
-# Sonarr v4 looks for ffprobe in its own binary directory (/app/sonarr/bin/)
-# via GlobalFFOptions.Configure(options => options.BinaryFolder = AppDomain.CurrentDomain.BaseDirectory)
-# Symlink the system-installed ffprobe there so Sonarr can find a working copy
-
-if [ -f /usr/bin/ffprobe ] && [ -d /app/sonarr/bin ]; then
-    ln -sf /usr/bin/ffprobe /app/sonarr/bin/ffprobe
-    echo "Symlinked /usr/bin/ffprobe to /app/sonarr/bin/ffprobe"
-fi