Generalize tracked-data cache from Lidarr-only to all three arrs

Shared cache/rescan-duration logic in common.sh now takes an arr_type
param instead of being Lidarr-specific, so Sonarr and Radarr cleanup
scripts get the same cache-first fetch + rescan-aware retry Lidarr had.
Avoids redundant full-library API calls across scripts run back to back,
and stops false failures when a fetch lands mid-rescan.

Arrs_Stack/lidarr_cleanup.sh

@@ -15,7 +15,7 @@
 # 22% of normal during an active RescanFolders), which used to trigger this script's own
 # hard abort every time it overlapped with a real rescan. Now it checks for an active
 # rescan-type command first — if one's running, it waits (calibrated to that command's
-# own historical duration via lidarr_get_rescan_duration(), up to 3 strikes) and re-fetches
+# own historical duration via arr_get_rescan_duration(), up to 3 strikes) and re-fetches
 # rather than either stacking a duplicate scan or crying wolf on a normal, if slow, state.
 # Only escalates to the scary abort-and-notify when the count is genuinely low AND nothing
 # is actively rescanning.
@@ -260,14 +260,14 @@ unset _cp
 # repeated runs each firing their own DownloadedAlbumsScan piled up in Lidarr's command
 # queue behind each other rather than replacing/coalescing, contributing to a multi-hour
 # backlog. If something's already scanning, just wait for that one instead.
-_already_active=$(lidarr_active_rescan_command "$LIDARR_URL" "$LIDARR_API_KEY" "v1")
+_already_active=$(arr_active_rescan_command "lidarr" "$LIDARR_URL" "$LIDARR_API_KEY" "v1")
 
 if [[ -n "$_already_active" ]]; then
     info "$_already_active already in progress — waiting for it instead of starting a new scan"
-    _wait=$(( $(lidarr_get_rescan_duration "$_already_active" "${LIDARR_IMPORT_SCAN_TIMEOUT:-600}") ))
+    _wait=$(( $(arr_get_rescan_duration "lidarr" "$_already_active" "${LIDARR_IMPORT_SCAN_TIMEOUT:-600}") ))
     _polled=0
     while [[ "$_polled" -lt "$_wait" ]]; do
-        [[ -z "$(lidarr_active_rescan_command "$LIDARR_URL" "$LIDARR_API_KEY" "v1")" ]] && break
+        [[ -z "$(arr_active_rescan_command "lidarr" "$LIDARR_URL" "$LIDARR_API_KEY" "v1")" ]] && break
         sleep 15
         (( _polled += 15 ))
         [[ $(( _polled % 60 )) -eq 0 ]] && log "  Still waiting on $_already_active... (${_polled}s elapsed)"
@@ -275,11 +275,11 @@ if [[ -n "$_already_active" ]]; then
 elif [[ -n "$LIDARR_CONTAINER_ROOT" ]]; then
     info "Triggering DownloadedAlbumsScan on: $LIDARR_CONTAINER_ROOT"
     SCAN_PAYLOAD="{\"name\": \"DownloadedAlbumsScan\", \"path\": \"$LIDARR_CONTAINER_ROOT\"}"
-    trigger_and_await_command "$LIDARR_URL" "$LIDARR_API_KEY" "v1" "$SCAN_PAYLOAD" "${LIDARR_IMPORT_SCAN_TIMEOUT:-600}"
+    trigger_and_await_command "$LIDARR_URL" "$LIDARR_API_KEY" "v1" "$SCAN_PAYLOAD" "${LIDARR_IMPORT_SCAN_TIMEOUT:-600}" "lidarr"
 else
     info "No path map match — triggering DownloadedAlbumsScan (all root folders)"
     SCAN_PAYLOAD='{"name": "DownloadedAlbumsScan"}'
-    trigger_and_await_command "$LIDARR_URL" "$LIDARR_API_KEY" "v1" "$SCAN_PAYLOAD" "${LIDARR_IMPORT_SCAN_TIMEOUT:-600}"
+    trigger_and_await_command "$LIDARR_URL" "$LIDARR_API_KEY" "v1" "$SCAN_PAYLOAD" "${LIDARR_IMPORT_SCAN_TIMEOUT:-600}" "lidarr"
 fi
 
 # ==============================================================================================
@@ -306,6 +306,8 @@ ARTIST_RESPONSE=$(arr_api "$LIDARR_URL" "$LIDARR_API_KEY" "v1" "artist" "Lidarr"
         "Lidarr Cleanup" "warning"
     exit 1
 }
+# Write-through — free cache refresh from a fetch this script already needed.
+arr_cache_write "lidarr" "$ARTIST_RESPONSE"
 
 ARTIST_IDS=$(echo "$ARTIST_RESPONSE" | jq -r '.[].id' 2>/dev/null)
 ARTIST_COUNT=$(echo "$ARTIST_IDS" | grep -c "[0-9]" 2>/dev/null || echo 0)
@@ -379,10 +381,10 @@ if [[ "$_last_known" -gt 0 ]]; then
         _pct=$(awk "BEGIN {printf \"%d\", ($TRACKED_COUNT / $_last_known) * 100}")
         [[ "$_pct" -ge "${LIDARR_MIN_TRACKED_PCT:-50}" ]] && break
 
-        _active_cmd=$(lidarr_active_rescan_command "$LIDARR_URL" "$LIDARR_API_KEY" "v1")
+        _active_cmd=$(arr_active_rescan_command "lidarr" "$LIDARR_URL" "$LIDARR_API_KEY" "v1")
         [[ -z "$_active_cmd" ]] && break   # low count, nothing rescanning — genuine, don't retry
 
-        _wait=$(( $(lidarr_get_rescan_duration "$_active_cmd" 300) / 2 ))
+        _wait=$(( $(arr_get_rescan_duration "lidarr" "$_active_cmd" 300) / 2 ))
         [[ "$_wait" -lt 30 ]] && _wait=30
         warn "Tracked count ${_pct}% of last run, but $_active_cmd active — waiting ${_wait}s (strike ${_strike}/3)"
         sleep "$_wait"
@@ -391,7 +393,7 @@ if [[ "$_last_known" -gt 0 ]]; then
     done
 
     if [[ "$_strike" -gt 3 ]]; then
-        _active_cmd=$(lidarr_active_rescan_command "$LIDARR_URL" "$LIDARR_API_KEY" "v1")
+        _active_cmd=$(arr_active_rescan_command "lidarr" "$LIDARR_URL" "$LIDARR_API_KEY" "v1")
         if [[ -n "$_active_cmd" ]]; then
             warn "Lidarr still busy ($_active_cmd) after 3 strikes — deferring to next scheduled run"
             exit 0