Fix Emby auth header and arr cleanup pre-flight scan

Emby 4.9.5 rejects X-Api-Key — notify_emby_scan() now uses X-Emby-Token
consistently with emby_api(). Radarr v6 changed DownloadedMoviesScan to
require a path parameter — both cleanup scripts now use ProcessMonitoredDownloads
which achieves the same pre-flight intent without a path.

Media/radarr_cleanup.sh

@@ -336,8 +336,8 @@ fi
 
 info "Scan targets (${#SCAN_ROOTS[@]}): ${SCAN_ROOTS[*]}"
 
-info "Triggering DownloadedMoviesScan (all root folders)"
-SCAN_PAYLOAD='{"name": "DownloadedMoviesScan"}'
+info "Triggering ProcessMonitoredDownloads pre-flight"
+SCAN_PAYLOAD='{"name": "ProcessMonitoredDownloads"}'
 
 SCAN_RESPONSE=$(curl -sf --max-time 30 -X POST \
     -H "X-Api-Key: $RADARR_API_KEY" \

Media/sonarr_cleanup.sh

@@ -336,8 +336,8 @@ fi
 
 info "Scan targets (${#SCAN_ROOTS[@]}): ${SCAN_ROOTS[*]}"
 
-info "Triggering DownloadedEpisodesScan (all root folders)"
-SCAN_PAYLOAD='{"name": "DownloadedEpisodesScan"}'
+info "Triggering ProcessMonitoredDownloads pre-flight"
+SCAN_PAYLOAD='{"name": "ProcessMonitoredDownloads"}'
 
 SCAN_RESPONSE=$(curl -sf --max-time 30 -X POST \
     -H "X-Api-Key: $SONARR_API_KEY" \