feat(ops): add k3s + ArgoCD GitOps pipeline

- Dockerfile: copy web/ and assets/ to runtime stage so ServeDir routes work
- .gitea/workflows/docker-build.yml: build/push image on master push, pin SHA
  tag back into deploy/kustomization.yaml so ArgoCD sees a real manifest change
- deploy/: Kustomize manifests — Namespace, PVC, Deployment (Recreate for
  SQLite), Service, Traefik Ingress at klondike.aleshym.co
- argocd/application.yaml: auto-sync Application watching deploy/ on Gitea

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

.gitea/workflows/docker-build.yml

@@ -0,0 +1,65 @@
+name: Build and Deploy
+
+on:
+  push:
+    branches: [master]
+    # Only run when server code changes, not when CI itself updates deploy/.
+    paths-ignore:
+      - 'deploy/**'
+      - 'argocd/**'
+      - '**.md'
+
+env:
+  REGISTRY: git.aleshym.co
+  IMAGE: git.aleshym.co/funman300/solitaire-server
+
+jobs:
+  build-and-push:
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+        with:
+          # Need full history so we can push the tag-update commit back.
+          fetch-depth: 0
+          token: ${{ secrets.CI_TOKEN }}
+
+      - name: Set image tag
+        id: meta
+        run: echo "sha=${GITHUB_SHA::8}" >> "$GITHUB_OUTPUT"
+
+      - name: Log in to Gitea registry
+        uses: docker/login-action@v3
+        with:
+          registry: ${{ env.REGISTRY }}
+          username: ${{ gitea.actor }}
+          password: ${{ secrets.CI_TOKEN }}
+
+      - name: Build and push
+        uses: docker/build-push-action@v5
+        with:
+          context: .
+          file: solitaire_server/Dockerfile
+          push: true
+          tags: |
+            ${{ env.IMAGE }}:${{ steps.meta.outputs.sha }}
+            ${{ env.IMAGE }}:latest
+
+      - name: Install kustomize
+        run: |
+          curl -sL "https://raw.githubusercontent.com/kubernetes-sigs/kustomize/master/hack/install_kustomize.sh" | bash
+          sudo mv kustomize /usr/local/bin/kustomize
+
+      - name: Pin image tag in deploy manifests
+        run: |
+          cd deploy
+          kustomize edit set image solitaire-server=${{ env.IMAGE }}:${{ steps.meta.outputs.sha }}
+
+      - name: Commit and push updated kustomization
+        run: |
+          git config user.email "ci@gitea.local"
+          git config user.name "Gitea CI"
+          git add deploy/kustomization.yaml
+          git commit -m "chore(deploy): bump image to ${{ steps.meta.outputs.sha }} [skip ci]" || true
+          git push

argocd/application.yaml

@@ -0,0 +1,20 @@
+apiVersion: argoproj.io/v1alpha1
+kind: Application
+metadata:
+  name: solitaire-server
+  namespace: argocd
+spec:
+  project: default
+  source:
+    repoURL: http://10.10.0.64:3000/funman300/Rusty_Solitare.git
+    targetRevision: master
+    path: deploy
+  destination:
+    server: https://kubernetes.default.svc
+    namespace: solitaire
+  syncPolicy:
+    automated:
+      prune: true
+      selfHeal: true
+    syncOptions:
+      - CreateNamespace=true

deploy/deployment.yaml

@@ -0,0 +1,62 @@
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: solitaire-server
+  namespace: solitaire
+spec:
+  replicas: 1
+  selector:
+    matchLabels:
+      app: solitaire-server
+  # SQLite is single-writer; Recreate avoids two pods owning the PVC at once.
+  strategy:
+    type: Recreate
+  template:
+    metadata:
+      labels:
+        app: solitaire-server
+    spec:
+      imagePullSecrets:
+        - name: gitea-registry
+      containers:
+        - name: server
+          image: solitaire-server
+          imagePullPolicy: Always
+          ports:
+            - containerPort: 8080
+          env:
+            - name: DATABASE_URL
+              value: sqlite:///data/sol.db
+            - name: JWT_SECRET
+              valueFrom:
+                secretKeyRef:
+                  name: solitaire-secrets
+                  key: jwt-secret
+            - name: SERVER_PORT
+              value: "8080"
+          volumeMounts:
+            - name: db-data
+              mountPath: /data
+          livenessProbe:
+            httpGet:
+              path: /health
+              port: 8080
+            initialDelaySeconds: 5
+            periodSeconds: 30
+          readinessProbe:
+            httpGet:
+              path: /health
+              port: 8080
+            initialDelaySeconds: 3
+            periodSeconds: 10
+          resources:
+            requests:
+              cpu: 50m
+              memory: 64Mi
+            limits:
+              cpu: 500m
+              memory: 256Mi
+      volumes:
+        - name: db-data
+          persistentVolumeClaim:
+            claimName: solitaire-db

deploy/ingress.yaml

@@ -0,0 +1,27 @@
+apiVersion: networking.k8s.io/v1
+kind: Ingress
+metadata:
+  name: solitaire-server
+  namespace: solitaire
+  annotations:
+    # Remove the next two lines if you are not using cert-manager.
+    cert-manager.io/cluster-issuer: letsencrypt-prod
+    traefik.ingress.kubernetes.io/router.entrypoints: websecure
+spec:
+  ingressClassName: traefik
+  rules:
+    - host: klondike.aleshym.co
+      http:
+        paths:
+          - path: /
+            pathType: Prefix
+            backend:
+              service:
+                name: solitaire-server
+                port:
+                  name: http
+  # Remove the tls block if you are not using cert-manager.
+  tls:
+    - hosts:
+        - klondike.aleshym.co
+      secretName: solitaire-tls

deploy/kustomization.yaml

@@ -0,0 +1,16 @@
+apiVersion: kustomize.config.k8s.io/v1beta1
+kind: Kustomization
+
+resources:
+  - namespace.yaml
+  - pvc.yaml
+  - deployment.yaml
+  - service.yaml
+  - ingress.yaml
+
+# CI updates this block automatically via `kustomize edit set image`.
+# The image name here matches the `image: solitaire-server` stub in deployment.yaml.
+images:
+  - name: solitaire-server
+    newName: git.aleshym.co/funman300/solitaire-server
+    newTag: latest

deploy/namespace.yaml

@@ -0,0 +1,4 @@
+apiVersion: v1
+kind: Namespace
+metadata:
+  name: solitaire

deploy/pvc.yaml

@@ -0,0 +1,11 @@
+apiVersion: v1
+kind: PersistentVolumeClaim
+metadata:
+  name: solitaire-db
+  namespace: solitaire
+spec:
+  accessModes:
+    - ReadWriteOnce
+  resources:
+    requests:
+      storage: 1Gi

deploy/service.yaml

@@ -0,0 +1,12 @@
+apiVersion: v1
+kind: Service
+metadata:
+  name: solitaire-server
+  namespace: solitaire
+spec:
+  selector:
+    app: solitaire-server
+  ports:
+    - name: http
+      port: 80
+      targetPort: 8080

solitaire_server/Dockerfile

@@ -48,8 +48,12 @@ RUN apt-get update && apt-get install -y --no-install-recommends \
 WORKDIR /app
 
 COPY --from=builder /build/target/release/solitaire_server ./solitaire_server
-# Migrations are embedded via sqlx::migrate!("./migrations") relative to the
+# Migrations are embedded via sqlx::migrate!("./migrations") at compile time.
-# crate root at compile time — they do not need to be copied here.
+# Static web assets are served via ServeDir at runtime from these paths:
+#   /app/solitaire_server/web  →  /web route
+#   /app/assets                →  /assets route
+COPY solitaire_server/web ./solitaire_server/web
+COPY assets ./assets
 
 ENV SERVER_PORT=8080
 EXPOSE 8080