feat(behandel): behandel-portal app — medewerker login + werkbak with decide (refs #13)

Scaffold apps/behandel (mirrors self-service): medewerker-realm OIDC login, the werkbak page

listing registrations awaiting beoordeling (GET /behandel/werkbak) with goedkeuren/afwijzen

actions (POST /behandel/registrations/{id}/decide) that refresh the list, plus Dockerfile and

same-origin nginx reverse proxy for /behandel/ (ADR-0013; S-12).

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

apps/behandel/Dockerfile

@@ -0,0 +1,23 @@
+# Multi-stage build for the behandel portal (Angular → nginx).
+# Build context is the repo root (the app needs the pnpm workspace + libs). See infra/docker-compose.yml.
+FROM node:24-slim AS build
+WORKDIR /src
+RUN corepack enable && corepack prepare pnpm@11.5.2 --activate
+
+# Restore first (cached unless the manifests change).
+COPY package.json pnpm-lock.yaml pnpm-workspace.yaml nx.json tsconfig.base.json eslint.config.mjs ./
+RUN pnpm install --frozen-lockfile
+
+# Sources (only what the app + its libs need).
+COPY apps/behandel apps/behandel
+COPY libs libs
+RUN pnpm nx build behandel
+
+FROM nginx:1.27-alpine AS runtime
+COPY apps/behandel/nginx.conf /etc/nginx/conf.d/default.conf
+COPY --from=build /src/dist/apps/behandel/browser /usr/share/nginx/html
+# Compose-time OIDC config: the browser (Playwright, on the compose network) reaches Keycloak by
+# service name, so the token issuer matches the BFF's medewerker authority (host-consistent, ADR-0013).
+RUN printf '{ "authority": "http://keycloak:8080/realms/medewerker" }\n' > /usr/share/nginx/html/config.json
+
+EXPOSE 80