Replace Emby dirty-sync workaround with play_state_sync in handback

Emby now runs continuously on both hosts — play_state_sync via API
handles watch state reconciliation, making the 30-min dirty rsync
redundant. Handback runs play_state_sync --wait before DNS cutover
so users land on current state after a failover event.

- Emby removed from FALLBACK_HOST1_TIER1 (always running)
- Emby dirty sync removed from HOST1_CRITICAL_SYNC_SHARES
- Emby writeback removed from FALLBACK_HOST1_WRITEBACK_TIER1
- play_state_sync gains --wait flag (uses lock wait mode for handback)
- Tier 1 emby-fallback special case removed from handback writeback loop
- play_state_sync --wait added as Step 7 in handback, before DNS cutover

Fallback/fallback.sh

@@ -772,11 +772,7 @@ run_handback() {
                 [[ -z "$job" ]] && continue
                 log "Syncing: $job"
                 if [[ "$DRY_RUN" == false ]]; then
-                    if [[ "$(basename "$job")" == "Emby" ]]; then
+                    bash "$SCRIPT_DIR/../Rsync/rsync.sh" "$job"
-                        bash "$SCRIPT_DIR/../Rsync/rsync.sh" "$job" --profile=emby-fallback
-                    else
-                        bash "$SCRIPT_DIR/../Rsync/rsync.sh" "$job"
-                    fi
                 else
                     warn "DRY RUN — would rsync: $job"
                 fi
@@ -797,7 +793,20 @@ run_handback() {
         [[ "$is_ddns" == false ]] && remote_start "$container"
     done
 
-    # ── Step 7: DNS Cutover — final step ────────────────────────────────────────────────────
+    # ── Step 7: Play State Sync — before DNS cutover so users land on current state ──────────
+    echo ""
+    echo "━━━ $ICON_SYNC Play State Sync ━━━"
+    if [[ "$DRY_RUN" == false ]]; then
+        if bash "$SCRIPT_DIR/../Media/play_state_sync.sh" --wait; then
+            log "Play state synced — $REMOTE_SERVER_NAME watch state reconciled ✅"
+        else
+            warn "play_state_sync failed — users may see stale watch state until next sync cycle"
+        fi
+    else
+        warn "DRY RUN — would run play_state_sync --wait"
+    fi
+
+    # ── Step 8: DNS Cutover — final step ────────────────────────────────────────────────────
     # DNS cuts over ONLY after Tier 1 containers confirmed up
     echo ""
     echo "━━━ $ICON_NET DNS Cutover ━━━"
@@ -807,7 +816,7 @@ run_handback() {
     done
     warn "$ICON_NET Remote DDNS started — DNS now points at $REMOTE_SERVER_NAME"
 
-    # ── Step 8: Return to NORMAL ─────────────────────────────────────────────────────────────
+    # ── Step 9: Return to NORMAL ─────────────────────────────────────────────────────────────
     echo ""
     state_set state "NORMAL"
     state_set fallback_start "0"

Media/play_state_sync.sh

@@ -73,11 +73,18 @@
 SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
 source "$SCRIPT_DIR/../load_config.sh"
 
-# ── Handle --full before parse_args ───────────────────────────────────────────
+# ── Handle --full and --wait before parse_args ────────────────────────────────
 FULL_SYNC=false
+LOCK_MODE="strict"
 _FILTERED=()
 for _a in "$@"; do
-    [[ "$_a" == "--full" ]] && FULL_SYNC=true || _FILTERED+=("$_a")
+    if [[ "$_a" == "--full" ]]; then
+        FULL_SYNC=true
+    elif [[ "$_a" == "--wait" ]]; then
+        LOCK_MODE="wait"
+    else
+        _FILTERED+=("$_a")
+    fi
 done
 parse_args "${_FILTERED[@]}"
 
@@ -93,7 +100,7 @@ log "$ICON_GEAR Config: days=${SYNC_DAYS} types=${SYNC_TYPES} remote=${PLAY_SYNC
 
 command -v jq >/dev/null 2>&1 || { error "jq is required but not installed"; exit 1; }
 
-acquire_lock
+acquire_lock "$LOCK_MODE"
 
 # ── Build server list across ALL hosts ────────────────────────────────────────
 # All HOST*_TRANSCODE_SERVERS arrays are loaded into env by load_config.sh.