feat(openviking): deploy maelstrom-ui Web Studio frontend

- Build/push image: the-seas.local.mk-labs.cloud/library/maelstrom-ui:v0.3.17-1
  (upstream volcengine/openviking web-studio/, pinned to commit 3cd1d4e9)
- Deployment + Service serving the static SPA via nginx (reverse-proxies
  /api, /health, /ready to openviking backend; /bot deliberately NOT proxied)
- Ingress at maelstrom.local.mk-labs.cloud (TLS via letsencrypt-internal)
- ExternalSecret wiring scoped maelstrom-ui-key from
  op://mk-labs/openviking/maelstrom-ui-key into the pod env (MAELSTROM_UI_KEY)

Per approved plan: inbox/ryan/2026-08-14-maelstrom-ui-deployment-plan.md
Key mint + approval: system/inbox/agents/nick-fury/2026-08-14-maelstrom-ui-key-mint-complete.md
Ryan approval: inbox/ryan/2026-08-14-maelstrom-key-approval.md

cluster/platform/openviking/maelstrom-ui/Dockerfile

@@ -0,0 +1,25 @@
+# maelstrom-ui — OpenViking Web Studio static frontend
+# Built per finalized plan: inbox/ryan/2026-08-14-maelstrom-ui-deployment-plan.md (Option B)
+#
+# Source: volcengine/openviking upstream, subdirectory web-studio/, pinned to
+# commit 3cd1d4e9acdfcc2567fd78da95339c3b18936c1c (2026-08-14).
+# NOT vendored into this repo (GitOps manifests stay app-source-free) — the
+# build context is the upstream web-studio/ directory checked out at that
+# commit. Image built + pushed manually for this deployment; see
+# system/inbox/agents/peter-parker/ for the build log if promoted to CI.
+#
+# Stage 1: build the SPA
+FROM node:22-alpine AS build
+WORKDIR /app
+COPY web-studio/package.json web-studio/package-lock.json* web-studio/pnpm-lock.yaml* ./
+RUN if [ -f pnpm-lock.yaml ]; then corepack enable && corepack prepare pnpm@latest --activate && pnpm install --no-frozen-lockfile && pnpm approve-builds --all || true; \
+    else npm ci; fi
+COPY web-studio/ .
+RUN if [ -f pnpm-lock.yaml ]; then pnpm run build; else npm run build; fi
+
+# Stage 2: serve with nginx, proxying /api/, /health, /ready to the openviking Service.
+# /bot/ is deliberately NOT proxied (bot.enabled: false, defense-in-depth per plan §2).
+FROM nginx:alpine
+COPY --from=build /app/dist /usr/share/nginx/html
+COPY nginx.conf /etc/nginx/conf.d/default.conf
+EXPOSE 80

cluster/platform/openviking/maelstrom-ui/nginx.conf

@@ -0,0 +1,34 @@
+# maelstrom-ui nginx config
+# Per plan §2: proxy /api/, /health, /ready to the openviking Service.
+# /bot/ is deliberately NOT proxied — bot stays disabled (scope decision #3);
+# any Web Studio call to /bot/v1/* 404s at this layer instead of reaching a disabled backend.
+server {
+    listen 80;
+    server_name _;
+
+    location /api/ {
+        proxy_pass http://openviking.openviking.svc.cluster.local:1933/api/;
+        proxy_set_header Host $host;
+        proxy_set_header X-Real-IP $remote_addr;
+        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
+        proxy_set_header X-Forwarded-Proto $scheme;
+    }
+
+    location /health {
+        proxy_pass http://openviking.openviking.svc.cluster.local:1933/health;
+        proxy_set_header Host $host;
+    }
+
+    location /ready {
+        proxy_pass http://openviking.openviking.svc.cluster.local:1933/ready;
+        proxy_set_header Host $host;
+    }
+
+    # bot stays disabled — no proxy for /bot/, static 404 by default nginx behavior.
+
+    location / {
+        root /usr/share/nginx/html;
+        index index.html;
+        try_files $uri $uri/ /index.html;
+    }
+}