diff --git a/apps/monitoring/noc-monitoring.yaml b/apps/monitoring/noc-monitoring.yaml
index 8efd051..00c8020 100644
--- a/apps/monitoring/noc-monitoring.yaml
+++ b/apps/monitoring/noc-monitoring.yaml
@@ -316,6 +316,21 @@ data:
             labels:
               service: "remotedesktop-web"
 
+      # FlowerCore voice synthesis metrics — direct app exposition where present.
+      # Chat live returned 404 on /metrics as of 2026-05-06, so this migration
+      # target only scrapes TtsReader until the Chat producer exports metrics.
+      - job_name: "fc-ttsreader-voice"
+        scrape_interval: 30s
+        metrics_path: /metrics
+        scheme: https
+        tls_config:
+          insecure_skip_verify: true
+        static_configs:
+          - targets: ["ttsreader.iamworkin.lan:443"]
+            labels:
+              service: "ttsreader-web"
+              namespace: "fc-ttsreader"
+
       # CUPS web UI health (port 631)
       - job_name: "probe-cups"
         metrics_path: /probe
@@ -697,6 +712,43 @@ data:
               summary: "Print.Web Ollama runner held for >10m ({{ $labels.model }})"
               description: "Print.Web reports model {{ $labels.model }} with {{ $value | printf \"%.0f\" }}s of keep-alive remaining. Check concurrent requests before the Pi 5 Ollama lane thrashes."
 
+      - name: fc-voice-synthesis
+        rules:
+          - alert: voice_synthesis_error_rate_high
+            expr: |
+              (
+                sum(rate(voice_synthesis_total{status=~"error|failed|failure|throttled"}[5m]))
+                /
+                clamp_min(sum(rate(voice_synthesis_total[5m])), 0.001)
+              ) > 0.05
+              unless on()
+              absent_over_time(voice_synthesis_total[7d])
+            for: 5m
+            labels:
+              severity: warning
+              service: voice-stack
+              alert_channel: irc
+            annotations:
+              summary: "Voice synthesis error rate above 5%"
+              description: "More than 5% of voice synthesis attempts ended in error, failure, or throttling over the last 5 minutes."
+
+          - alert: voice_synthesis_latency_p99_high
+            expr: |
+              histogram_quantile(
+                0.99,
+                sum by (engine, le) (rate(voice_synthesis_latency_ms_bucket[5m]))
+              ) > 10000
+              unless on()
+              absent_over_time(voice_synthesis_latency_ms_bucket[7d])
+            for: 2m
+            labels:
+              severity: warning
+              service: voice-stack
+              alert_channel: irc
+            annotations:
+              summary: "Voice synthesis p99 latency above 10s on {{ $labels.engine }}"
+              description: "Voice synthesis latency p99 for engine {{ $labels.engine }} exceeded 10 seconds for two evaluation cycles."
+
       - name: remote-desktop
         rules:
           - alert: RemoteDesktopWebDown
@@ -1425,6 +1477,19 @@ data:
           path: /var/lib/grafana/dashboards
           foldersFromFilesStructure: true
 
+# =============================================================================
+# ConfigMap: Grafana Dashboard (Voice Stack)
+# =============================================================================
+---
+apiVersion: v1
+kind: ConfigMap
+metadata:
+  name: grafana-dashboard-voice-stack
+  namespace: monitoring
+data:
+  voice-stack.json: |
+    {"annotations":{"list":[]},"editable":true,"fiscalYearStartMonth":0,"graphTooltip":1,"id":null,"links":[{"icon":"external link","includeVars":false,"keepTime":false,"targetBlank":true,"title":"TtsReader","type":"link","url":"https://ttsreader.iamworkin.lan/"},{"icon":"external link","includeVars":false,"keepTime":false,"targetBlank":true,"title":"Chat","type":"link","url":"https://chat.iamworkin.lan/"}],"panels":[{"datasource":{"type":"prometheus","uid":"prometheus"},"fieldConfig":{"defaults":{"color":{"mode":"thresholds"},"thresholds":{"mode":"absolute","steps":[{"color":"#64748b","value":null},{"color":"#38bdf8","value":1},{"color":"#22c55e","value":25}]},"unit":"short"},"overrides":[]},"gridPos":{"h":4,"w":6,"x":0,"y":0},"id":1,"options":{"colorMode":"background","graphMode":"area","justifyMode":"center","orientation":"auto","reduceOptions":{"calcs":["lastNotNull"],"fields":"","values":false},"showPercentChange":false,"textMode":"auto","wideLayout":true},"pluginVersion":"12.4.0","targets":[{"datasource":{"type":"prometheus","uid":"prometheus"},"editorMode":"code","expr":"sum(increase(voice_synthesis_total[1h])) or vector(0)","legendFormat":"synth/hr","range":true,"refId":"A"}],"title":"Total Syntheses / Hour","type":"stat"},{"datasource":{"type":"prometheus","uid":"prometheus"},"fieldConfig":{"defaults":{"color":{"mode":"thresholds"},"thresholds":{"mode":"absolute","steps":[{"color":"#22c55e","value":null},{"color":"#f59e0b","value":5},{"color":"#ef4444","value":10}]},"unit":"s"},"overrides":[]},"gridPos":{"h":4,"w":6,"x":6,"y":0},"id":2,"options":{"colorMode":"background","graphMode":"area","justifyMode":"center","orientation":"auto","reduceOptions":{"calcs":["lastNotNull"],"fields":"","values":false},"showPercentChange":false,"textMode":"auto","wideLayout":true},"pluginVersion":"12.4.0","targets":[{"datasource":{"type":"prometheus","uid":"prometheus"},"editorMode":"code","expr":"(histogram_quantile(0.99, sum by (le) (rate(voice_synthesis_latency_ms_bucket[5m]))) / 1000) or vector(0)","legendFormat":"p99","range":true,"refId":"A"}],"title":"Latency p99","type":"stat"},{"datasource":{"type":"prometheus","uid":"prometheus"},"fieldConfig":{"defaults":{"color":{"mode":"thresholds"},"thresholds":{"mode":"absolute","steps":[{"color":"#22c55e","value":null},{"color":"#f59e0b","value":2},{"color":"#ef4444","value":5}]},"unit":"percent"},"overrides":[]},"gridPos":{"h":4,"w":6,"x":12,"y":0},"id":3,"options":{"colorMode":"background","graphMode":"area","justifyMode":"center","orientation":"auto","reduceOptions":{"calcs":["lastNotNull"],"fields":"","values":false},"showPercentChange":false,"textMode":"auto","wideLayout":true},"pluginVersion":"12.4.0","targets":[{"datasource":{"type":"prometheus","uid":"prometheus"},"editorMode":"code","expr":"(100 * sum(rate(voice_synthesis_total{status=~\"error|failed|failure|throttled\"}[5m])) / clamp_min(sum(rate(voice_synthesis_total[5m])), 0.001)) or vector(0)","legendFormat":"error %","range":true,"refId":"A"}],"title":"Error Rate","type":"stat"},{"datasource":{"type":"prometheus","uid":"prometheus"},"fieldConfig":{"defaults":{"color":{"mode":"palette-classic"},"custom":{"fillOpacity":18,"lineWidth":2},"unit":"short"},"overrides":[]},"gridPos":{"h":4,"w":6,"x":18,"y":0},"id":4,"options":{"legend":{"calcs":["lastNotNull"],"displayMode":"table","placement":"bottom","showLegend":true},"tooltip":{"hideZeros":false,"mode":"multi","sort":"desc"}},"targets":[{"datasource":{"type":"prometheus","uid":"prometheus"},"editorMode":"code","expr":"sum by (status) (increase(voice_synthesis_total[1h]))","legendFormat":"{{status}}","range":true,"refId":"A"}],"title":"Status Counters","type":"timeseries"},{"datasource":{"type":"prometheus","uid":"prometheus"},"fieldConfig":{"defaults":{"color":{"mode":"palette-classic"},"custom":{"fillOpacity":10,"lineWidth":2},"unit":"ms"},"overrides":[]},"gridPos":{"h":8,"w":12,"x":0,"y":4},"id":5,"options":{"legend":{"calcs":["lastNotNull","max"],"displayMode":"table","placement":"bottom","showLegend":true},"tooltip":{"hideZeros":false,"mode":"multi","sort":"desc"}},"targets":[{"datasource":{"type":"prometheus","uid":"prometheus"},"editorMode":"code","expr":"histogram_quantile(0.50, sum by (engine, le) (rate(voice_synthesis_latency_ms_bucket[5m])))","legendFormat":"p50 {{engine}}","range":true,"refId":"A"},{"datasource":{"type":"prometheus","uid":"prometheus"},"editorMode":"code","expr":"histogram_quantile(0.95, sum by (engine, le) (rate(voice_synthesis_latency_ms_bucket[5m])))","legendFormat":"p95 {{engine}}","range":true,"refId":"B"},{"datasource":{"type":"prometheus","uid":"prometheus"},"editorMode":"code","expr":"histogram_quantile(0.99, sum by (engine, le) (rate(voice_synthesis_latency_ms_bucket[5m])))","legendFormat":"p99 {{engine}}","range":true,"refId":"C"}],"title":"Latency p50 / p95 / p99 by Engine","type":"timeseries"},{"datasource":{"type":"prometheus","uid":"prometheus"},"fieldConfig":{"defaults":{"color":{"mode":"palette-classic"},"custom":{"fillOpacity":25,"lineWidth":2,"stacking":{"mode":"normal"}},"unit":"short"},"overrides":[]},"gridPos":{"h":8,"w":12,"x":12,"y":4},"id":6,"options":{"legend":{"calcs":["lastNotNull"],"displayMode":"table","placement":"bottom","showLegend":true},"tooltip":{"hideZeros":false,"mode":"multi","sort":"desc"}},"targets":[{"datasource":{"type":"prometheus","uid":"prometheus"},"editorMode":"code","expr":"sum(increase(voice_synthesis_total{engine=~\"wyoming-piper|piper|piper-ft\"}[1h]))","legendFormat":"Tier P / Pi","range":true,"refId":"A"},{"datasource":{"type":"prometheus","uid":"prometheus"},"editorMode":"code","expr":"sum(increase(voice_synthesis_total{engine=~\"kokoro|gpu|openai|polly|edge\"}[1h]))","legendFormat":"Tier W / GPU+API","range":true,"refId":"B"},{"datasource":{"type":"prometheus","uid":"prometheus"},"editorMode":"code","expr":"sum(increase(voice_synthesis_total{engine=\"biblical-tts\"}[1h]))","legendFormat":"Biblical TTS","range":true,"refId":"C"}],"title":"Per-Tier Breakdown","type":"timeseries"},{"datasource":{"type":"prometheus","uid":"prometheus"},"fieldConfig":{"defaults":{"color":{"mode":"palette-classic"},"custom":{"align":"auto","cellOptions":{"type":"auto"}},"unit":"short"},"overrides":[]},"gridPos":{"h":8,"w":12,"x":0,"y":12},"id":7,"options":{"cellHeight":"sm","footer":{"countRows":false,"fields":"","reducer":["sum"],"show":false},"showHeader":true},"pluginVersion":"12.4.0","targets":[{"datasource":{"type":"prometheus","uid":"prometheus"},"editorMode":"code","expr":"topk(10, sum by (personality) (increase(voice_synthesis_total[30d])))","format":"table","instant":true,"legendFormat":"{{personality}}","range":false,"refId":"A"}],"title":"Per-Personality Top 10 (30d)","type":"table"},{"datasource":{"type":"prometheus","uid":"prometheus"},"fieldConfig":{"defaults":{"color":{"mode":"palette-classic"},"custom":{"align":"auto","cellOptions":{"type":"auto"}},"unit":"currencyUSD"},"overrides":[]},"gridPos":{"h":8,"w":12,"x":12,"y":12},"id":8,"options":{"cellHeight":"sm","footer":{"countRows":false,"fields":"","reducer":["sum"],"show":false},"showHeader":true},"pluginVersion":"12.4.0","targets":[{"datasource":{"type":"prometheus","uid":"prometheus"},"editorMode":"code","expr":"sum by (personality, engine) (increase(voice_synthesis_total{engine=~\"openai|polly\"}[30d])) * 0.015","format":"table","instant":true,"legendFormat":"api {{personality}}","range":false,"refId":"A"},{"datasource":{"type":"prometheus","uid":"prometheus"},"editorMode":"code","expr":"sum by (personality, engine) (increase(voice_synthesis_total{engine=~\"kokoro|gpu\"}[30d])) * 0.0002","format":"table","instant":true,"legendFormat":"gpu {{personality}}","range":false,"refId":"B"},{"datasource":{"type":"prometheus","uid":"prometheus"},"editorMode":"code","expr":"sum by (personality, engine) (increase(voice_synthesis_total{engine=~\"wyoming-piper|piper|piper-ft|biblical-tts\"}[30d])) * 0","format":"table","instant":true,"legendFormat":"local {{personality}}","range":false,"refId":"C"}],"title":"Estimated Monthly Cost by Personality","type":"table"},{"datasource":{"type":"prometheus","uid":"prometheus"},"fieldConfig":{"defaults":{"color":{"mode":"thresholds"},"custom":{"fillOpacity":20,"lineWidth":2},"thresholds":{"mode":"absolute","steps":[{"color":"#22c55e","value":null},{"color":"#f59e0b","value":2},{"color":"#ef4444","value":5}]},"unit":"percent"},"overrides":[]},"gridPos":{"h":6,"w":24,"x":0,"y":20},"id":9,"options":{"legend":{"calcs":["lastNotNull"],"displayMode":"table","placement":"bottom","showLegend":true},"tooltip":{"hideZeros":false,"mode":"multi","sort":"desc"}},"targets":[{"datasource":{"type":"prometheus","uid":"prometheus"},"editorMode":"code","expr":"(100 * sum(rate(voice_synthesis_total{status=~\"error|failed|failure|throttled\"}[5m])) / clamp_min(sum(rate(voice_synthesis_total[5m])), 0.001)) or vector(0)","legendFormat":"error %","range":true,"refId":"A"}],"title":"Error-Rate Sparkline","type":"timeseries"}],"preload":false,"refresh":"30s","schemaVersion":42,"tags":["flowercore","voice","tts","observability"],"templating":{"list":[]},"time":{"from":"now-6h","to":"now"},"timepicker":{},"timezone":"browser","title":"Voice Stack","uid":"voice-stack","version":1}
+
 # =============================================================================
 # ConfigMap: Grafana Dashboards (AI Stack Health)
 # =============================================================================
@@ -3107,6 +3172,7 @@ data:
     apiVersion: 1
     datasources:
       - name: Prometheus
+        uid: prometheus
         type: prometheus
         access: proxy
         url: http://prometheus.monitoring.svc:9090
@@ -3296,6 +3362,68 @@ data:
                 relativeTimeRange: {from: 120, to: 0}
                 datasourceUid: __expr__
                 model: {type: threshold, expression: B, conditions: [{evaluator: {params: [600], type: gt}}], refId: C}
+
+          - uid: voice-synthesis-error-rate-high
+            title: voice_synthesis_error_rate_high
+            condition: C
+            for: 5m
+            noDataState: OK
+            execErrState: OK
+            annotations:
+              summary: Voice synthesis error rate above 5%
+              description: More than 5% of voice synthesis attempts ended in error, failure, or throttling over the last 5 minutes.
+              runbook: "1. Open https://grafana-noc1.iamworkin.lan/d/voice-stack 2. Check status counters by engine/personality 3. Verify TtsReader quick synth 4. Check Piper/Kokoro/biblical-tts backend logs."
+            labels:
+              severity: warning
+              service: voice-stack
+              alert_channel: irc
+            data:
+              - refId: A
+                relativeTimeRange: {from: 300, to: 0}
+                datasourceUid: prometheus
+                model:
+                  expr: '((sum(rate(voice_synthesis_total{status=~"error|failed|failure|throttled"}[5m])) / clamp_min(sum(rate(voice_synthesis_total[5m])), 0.001)) unless on() absent_over_time(voice_synthesis_total[7d]))'
+                  instant: true
+                  refId: A
+              - refId: B
+                relativeTimeRange: {from: 300, to: 0}
+                datasourceUid: __expr__
+                model: {type: reduce, expression: A, reducer: last, refId: B}
+              - refId: C
+                relativeTimeRange: {from: 300, to: 0}
+                datasourceUid: __expr__
+                model: {type: threshold, expression: B, conditions: [{evaluator: {params: [0.05], type: gt}}], refId: C}
+
+          - uid: voice-synthesis-latency-p99-high
+            title: voice_synthesis_latency_p99_high
+            condition: C
+            for: 2m
+            noDataState: OK
+            execErrState: OK
+            annotations:
+              summary: Voice synthesis p99 latency above 10s
+              description: Voice synthesis p99 latency has exceeded 10 seconds for two evaluation cycles.
+              runbook: "1. Open https://grafana-noc1.iamworkin.lan/d/voice-stack 2. Compare p50/p95/p99 by engine and tier 3. Check whether Piper/Kokoro/GPU/API backend is cold-starting or overloaded."
+            labels:
+              severity: warning
+              service: voice-stack
+              alert_channel: irc
+            data:
+              - refId: A
+                relativeTimeRange: {from: 300, to: 0}
+                datasourceUid: prometheus
+                model:
+                  expr: '(histogram_quantile(0.99, sum by (engine, le) (rate(voice_synthesis_latency_ms_bucket[5m]))) unless on() absent_over_time(voice_synthesis_latency_ms_bucket[7d]))'
+                  instant: true
+                  refId: A
+              - refId: B
+                relativeTimeRange: {from: 300, to: 0}
+                datasourceUid: __expr__
+                model: {type: reduce, expression: A, reducer: last, refId: B}
+              - refId: C
+                relativeTimeRange: {from: 300, to: 0}
+                datasourceUid: __expr__
+                model: {type: threshold, expression: B, conditions: [{evaluator: {params: [10000], type: gt}}], refId: C}
       - orgId: 1
         name: Infrastructure
         folder: AI Stack Alerts
@@ -3652,6 +3780,9 @@ spec:
             - name: dashboards-remotedesktop
               mountPath: /var/lib/grafana/dashboards/remotedesktop
               readOnly: true
+            - name: dashboards-voice-stack
+              mountPath: /var/lib/grafana/dashboards/voice-stack
+              readOnly: true
             - name: datasource-provisioning
               mountPath: /etc/grafana/provisioning/datasources
               readOnly: true
@@ -3705,6 +3836,9 @@ spec:
         - name: dashboards-remotedesktop
           configMap:
             name: grafana-dashboard-remotedesktop
+        - name: dashboards-voice-stack
+          configMap:
+            name: grafana-dashboard-voice-stack
         - name: datasource-provisioning
           configMap:
             name: grafana-datasource-provisioning