diff --git a/apps/monitoring/noc-monitoring.yaml b/apps/monitoring/noc-monitoring.yaml
index 8efd051..6c63a67 100644
--- a/apps/monitoring/noc-monitoring.yaml
+++ b/apps/monitoring/noc-monitoring.yaml
@@ -1024,6 +1024,72 @@ data:
               summary: "Longhorn node {{ $labels.node }} not Ready"
               description: "Node {{ $labels.node }} reports ready=false (reason: {{ $labels.condition_reason }}). Volumes scheduled to this node will be unavailable until it recovers."
 
+      # ============================================================
+      # FC Signage Marquee Performance — Track 3 + 8 (2026-05-06)
+      # Live-mirrored from FlowerCore.Notes/scripts/monitoring/alerts.yml.
+      # Source-of-truth for the live Podman Prometheus on noc1 is the
+      # Notes file; this K8s ConfigMap exists so a future migration to
+      # in-cluster Prometheus inherits the ruleset automatically.
+      # See feedback_monitoring_k8s_target_vs_live_podman.
+      # ============================================================
+      - name: fc-signage-marquee
+        rules:
+          - alert: MarqueeDroppedFramesHigh
+            expr: |
+              (
+                sum by (renderer, phase, node_id) (rate(marquee_dropped_frames_total[5m]))
+                /
+                sum by (renderer, phase, node_id) (rate(marquee_render_latency_ms_count[5m]))
+              ) > 0.05
+              unless on()
+              absent_over_time(marquee_dropped_frames_total[7d])
+            for: 5m
+            labels:
+              severity: warning
+              service: signage
+              alert_channel: irc
+            annotations:
+              summary: "Marquee dropped-frame rate >5% on {{ $labels.renderer }}/{{ $labels.node_id }} ({{ $labels.phase }})"
+              description: "Renderer {{ $labels.renderer }} on {{ $labels.node_id }} drops >5% of frames during {{ $labels.phase }}. Animation visibly stuttery."
+
+          - alert: MarqueeRenderLatencyP99High
+            expr: |
+              histogram_quantile(
+                0.99,
+                sum by (renderer, phase, node_id, le) (rate(marquee_render_latency_ms_bucket[5m]))
+              ) > 16
+              unless on()
+              absent_over_time(marquee_render_latency_ms_bucket[7d])
+            for: 10m
+            labels:
+              severity: warning
+              service: signage
+              alert_channel: irc
+            annotations:
+              summary: "Marquee render latency p99 > 16ms on {{ $labels.renderer }}/{{ $labels.node_id }} ({{ $labels.phase }})"
+              description: "Per-frame render latency p99 has exceeded the Pi-class 16ms budget for 10 minutes."
+
+          - alert: MarqueeAnimationDurationDrift
+            expr: |
+              abs(
+                histogram_quantile(0.5, sum by (renderer, phase, le) (rate(marquee_animation_duration_ms_bucket[15m])))
+                -
+                on (phase) group_left() avg by (phase) (marquee_animation_duration_target_ms)
+              )
+              /
+              on (phase) group_left() avg by (phase) (marquee_animation_duration_target_ms)
+              > 0.10
+              unless on()
+              absent_over_time(marquee_animation_duration_ms_bucket[7d])
+            for: 15m
+            labels:
+              severity: info
+              service: signage
+              alert_channel: irc
+            annotations:
+              summary: "Marquee animation duration drifting > 10% on {{ $labels.renderer }} ({{ $labels.phase }})"
+              description: "Median observed cycle duration deviates from target DurationMs by >10%. Could indicate browser tab throttling, GPU pressure, or phase-advancement bug."
+
 # =============================================================================
 # ConfigMap: Blackbox Exporter Configuration
 # =============================================================================