diff --git a/apps/production/kustomization.yaml b/apps/production/kustomization.yaml
index fd3e43c..49b1ba6 100644
--- a/apps/production/kustomization.yaml
+++ b/apps/production/kustomization.yaml
@@ -53,6 +53,10 @@ resources:
   # Client-seitiger Scan-Dienst für verschlüsselte Räume (Issue #19-Erweiterung)
   - clamav-http-scanner.yaml
   - concierge-bot.yaml
+  # Wiki.js (Plattform-Wiki, ADR-0014, #0048) - wartet auf wikijs-postgres-secret
+  - wikijs-postgres.yaml
+  - wikijs.yaml
+  - wiki-ingress.yaml
 
 # Synapse-Modul als eigene Datei gepflegt (lintbar/testbar), aber als ConfigMap gemounted -
 # disableNameSuffixHash, da der Name in synapse-values.yaml's eingebettetem values.yaml
diff --git a/apps/production/networkpolicy.yaml b/apps/production/networkpolicy.yaml
index 65c8e8a..4a7401d 100644
--- a/apps/production/networkpolicy.yaml
+++ b/apps/production/networkpolicy.yaml
@@ -359,3 +359,45 @@ spec:
       ports:
         - protocol: TCP
           port: http
+---
+# wiki.axion1337.chat (Traefik) -> Wiki.js (ADR-0014, #0048)
+apiVersion: networking.k8s.io/v1
+kind: NetworkPolicy
+metadata:
+  name: allow-ingress-wikijs
+  namespace: matrix
+spec:
+  podSelector:
+    matchLabels:
+      app.kubernetes.io/name: wikijs
+  policyTypes:
+    - Ingress
+  ingress:
+    - from:
+        - namespaceSelector:
+            matchLabels:
+              kubernetes.io/metadata.name: kube-system
+      ports:
+        - protocol: TCP
+          port: http
+---
+# Wiki.js -> sein eigener Postgres (nur von Wiki.js-Pods erreichbar)
+apiVersion: networking.k8s.io/v1
+kind: NetworkPolicy
+metadata:
+  name: allow-ingress-wikijs-postgres
+  namespace: matrix
+spec:
+  podSelector:
+    matchLabels:
+      app.kubernetes.io/name: wikijs-postgres
+  policyTypes:
+    - Ingress
+  ingress:
+    - from:
+        - podSelector:
+            matchLabels:
+              app.kubernetes.io/name: wikijs
+      ports:
+        - protocol: TCP
+          port: postgres
diff --git a/apps/production/wiki-ingress.yaml b/apps/production/wiki-ingress.yaml
new file mode 100644
index 0000000..b5e8cd4
--- /dev/null
+++ b/apps/production/wiki-ingress.yaml
@@ -0,0 +1,33 @@
+# Öffentlicher Zugang zum Wiki.js unter wiki.axion1337.chat (ADR-0014, #0048).
+# Muster wie apps/authentik/{certificate,ingress}.yaml. DNS-A-Record auf
+# 49.13.132.245 ist von sorb angelegt. Login läuft nativ über Authentik-OIDC
+# (kein Forward-Auth) — siehe Guide 10 / #0049.
+apiVersion: cert-manager.io/v1
+kind: Certificate
+metadata:
+  name: wiki-axion1337-chat-cert
+  namespace: matrix
+spec:
+  secretName: wiki-axion1337-chat-tls
+  issuerRef:
+    name: letsencrypt-prod
+    kind: ClusterIssuer
+  dnsNames:
+    - wiki.axion1337.chat
+---
+apiVersion: traefik.io/v1alpha1
+kind: IngressRoute
+metadata:
+  name: wikijs
+  namespace: matrix
+spec:
+  entryPoints:
+    - websecure
+  tls:
+    secretName: wiki-axion1337-chat-tls
+  routes:
+    - match: Host(`wiki.axion1337.chat`)
+      kind: Rule
+      services:
+        - name: wikijs
+          port: 3000
diff --git a/apps/production/wikijs-postgres.yaml b/apps/production/wikijs-postgres.yaml
new file mode 100644
index 0000000..b314048
--- /dev/null
+++ b/apps/production/wikijs-postgres.yaml
@@ -0,0 +1,79 @@
+# Dedizierter Postgres für Wiki.js (ADR-0014, #0048). Bewusst eigenständig statt in
+# den Synapse-/Authentik-DBs, damit das Wiki als Suite-Baustein reproduzierbar bleibt.
+# git ist die Inhalts-Quelle (Wiki.js Git-Storage), diese DB ist Laufzeit-Index/Cache.
+apiVersion: v1
+kind: PersistentVolumeClaim
+metadata:
+  name: wikijs-postgres-data
+  namespace: matrix
+spec:
+  accessModes:
+    - ReadWriteOnce
+  storageClassName: local-path
+  resources:
+    requests:
+      storage: 2Gi
+---
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: wikijs-postgres
+  namespace: matrix
+spec:
+  replicas: 1
+  strategy:
+    type: Recreate          # RWO-Volume: kein RollingUpdate mit zwei Pods
+  selector:
+    matchLabels:
+      app.kubernetes.io/name: wikijs-postgres
+  template:
+    metadata:
+      labels:
+        app.kubernetes.io/name: wikijs-postgres
+    spec:
+      containers:
+        - name: postgres
+          image: postgres:16-alpine
+          ports:
+            - name: postgres
+              containerPort: 5432
+          env:
+            - name: POSTGRES_DB
+              value: wiki
+            - name: POSTGRES_USER
+              valueFrom:
+                secretKeyRef:
+                  name: wikijs-postgres-secret
+                  key: username
+            - name: POSTGRES_PASSWORD
+              valueFrom:
+                secretKeyRef:
+                  name: wikijs-postgres-secret
+                  key: password
+            - name: PGDATA
+              value: /var/lib/postgresql/data/pgdata
+          volumeMounts:
+            - name: data
+              mountPath: /var/lib/postgresql/data
+          readinessProbe:
+            exec:
+              command: ["pg_isready", "-U", "wiki", "-d", "wiki"]
+            initialDelaySeconds: 5
+            periodSeconds: 10
+      volumes:
+        - name: data
+          persistentVolumeClaim:
+            claimName: wikijs-postgres-data
+---
+apiVersion: v1
+kind: Service
+metadata:
+  name: wikijs-postgres
+  namespace: matrix
+spec:
+  selector:
+    app.kubernetes.io/name: wikijs-postgres
+  ports:
+    - name: postgres
+      port: 5432
+      targetPort: postgres
diff --git a/apps/production/wikijs.yaml b/apps/production/wikijs.yaml
new file mode 100644
index 0000000..30094e7
--- /dev/null
+++ b/apps/production/wikijs.yaml
@@ -0,0 +1,88 @@
+# Wiki.js — Plattform-Wiki (ADR-0014, #0048). Öffentlich unter wiki.axion1337.chat
+# (Ingress/Cert in wiki-ingress.yaml), Login nativ via Authentik-OIDC (#0049, Guide 10).
+# Git-Storage (Inhalt in git) wird nach dem ersten Start in der Admin-UI eingerichtet.
+apiVersion: v1
+kind: PersistentVolumeClaim
+metadata:
+  name: wikijs-data
+  namespace: matrix
+spec:
+  accessModes:
+    - ReadWriteOnce
+  storageClassName: local-path
+  resources:
+    requests:
+      storage: 2Gi
+---
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: wikijs
+  namespace: matrix
+spec:
+  replicas: 1
+  strategy:
+    type: Recreate          # RWO-Volume (Git-Storage-Klon)
+  selector:
+    matchLabels:
+      app.kubernetes.io/name: wikijs
+  template:
+    metadata:
+      labels:
+        app.kubernetes.io/name: wikijs
+    spec:
+      containers:
+        - name: wikijs
+          image: ghcr.io/requarks/wiki:2.5
+          ports:
+            - name: http
+              containerPort: 3000
+          env:
+            - name: DB_TYPE
+              value: postgres
+            - name: DB_HOST
+              value: wikijs-postgres
+            - name: DB_PORT
+              value: "5432"
+            - name: DB_NAME
+              value: wiki
+            - name: DB_USER
+              valueFrom:
+                secretKeyRef:
+                  name: wikijs-postgres-secret
+                  key: username
+            - name: DB_PASS
+              valueFrom:
+                secretKeyRef:
+                  name: wikijs-postgres-secret
+                  key: password
+          volumeMounts:
+            - name: data
+              mountPath: /wiki/data
+          readinessProbe:
+            tcpSocket:
+              port: http
+            initialDelaySeconds: 25
+            periodSeconds: 10
+          livenessProbe:
+            tcpSocket:
+              port: http
+            initialDelaySeconds: 60
+            periodSeconds: 20
+      volumes:
+        - name: data
+          persistentVolumeClaim:
+            claimName: wikijs-data
+---
+apiVersion: v1
+kind: Service
+metadata:
+  name: wikijs
+  namespace: matrix
+spec:
+  selector:
+    app.kubernetes.io/name: wikijs
+  ports:
+    - name: http
+      port: 3000
+      targetPort: http