feat: initial scaffold — MVP catalogue de données d'API

- Backend NestJS : CRUD api_entries + categories, upload YAML multi-fichiers,
  génération docs AsyncAPI (@asyncapi/cli@6.0.0) et OpenAPI (redocly)
- Fix: route wildcard GET /api/apis/:id/*path pour servir les assets statiques
  (CSS/JS) générés par AsyncAPI HTML template (contournement bug path-to-regexp v8)
- Frontend Angular 19 : pages catalog, browse, api-detail, doc-viewer, upload (DSFR)
- Seeder de données de démo (idempotent)
- Docker Compose dev + Dockerfiles + manifests K8s
- Documentation : README, architecture, référence API REST

Generated with [Claude Code](https://claude.ai/code)
via [Happy](https://happy.engineering)

Co-Authored-By: Claude <noreply@anthropic.com>
Co-Authored-By: Happy <yesreply@happy.engineering>

infra/Dockerfile.prod

@@ -0,0 +1,113 @@
+# =============================================================================
+# Dockerfile Multi-Target pour datacat
+# Usage:
+#   docker build --target back -t datacat/back:latest .
+#   docker build --target front -t datacat/front:latest .
+# =============================================================================
+
+# -----------------------------------------------------------------------------
+# Stage: base-node
+# -----------------------------------------------------------------------------
+FROM node:22-alpine AS base-node
+RUN npm install -g pnpm@10.33.0
+WORKDIR /app
+
+# -----------------------------------------------------------------------------
+# Stage: deps-back
+# -----------------------------------------------------------------------------
+FROM base-node AS deps-back
+COPY pnpm-workspace.yaml ./
+COPY package.json ./
+COPY shared/package.json ./shared/
+COPY back/package.json ./back/
+RUN pnpm install --frozen-lockfile
+
+# -----------------------------------------------------------------------------
+# Stage: build-back
+# -----------------------------------------------------------------------------
+FROM deps-back AS build-back
+COPY shared ./shared
+COPY back ./back
+WORKDIR /app/back
+RUN pnpm run build
+
+# -----------------------------------------------------------------------------
+# Stage: deps-front
+# -----------------------------------------------------------------------------
+FROM base-node AS deps-front
+COPY pnpm-workspace.yaml ./
+COPY package.json ./
+COPY shared/package.json ./shared/
+COPY front-public/package.json ./front-public/
+RUN pnpm install --frozen-lockfile
+
+# -----------------------------------------------------------------------------
+# Stage: build-front
+# -----------------------------------------------------------------------------
+FROM deps-front AS build-front
+COPY shared ./shared
+COPY front-public ./front-public
+WORKDIR /app/front-public
+ARG ANGULAR_API_URL=https://api.datacat.dev.chmod777.dev
+ENV ANGULAR_API_URL=$ANGULAR_API_URL
+RUN pnpm run build:prod
+
+# =============================================================================
+# IMAGES FINALES
+# =============================================================================
+
+# -----------------------------------------------------------------------------
+# Target: back
+# -----------------------------------------------------------------------------
+FROM node:22-alpine AS back
+
+# Install git (required by asyncapi html-template installer) and tools
+RUN apk add --no-cache git
+
+# Install AsyncAPI CLI and Redocly CLI for docs generation
+RUN npm install -g pnpm@10.33.0 @asyncapi/cli@6.0.0 @redocly/cli
+
+# Pre-cache the AsyncAPI html-template so generation works on first startup
+RUN mkdir -p /tmp/asyncapi-warmup /tmp/asyncapi-warmup/out && \
+    printf 'asyncapi: "3.0.0"\ninfo:\n  title: Warmup\n  version: "1.0.0"\nchannels: {}\n' \
+      > /tmp/asyncapi-warmup/spec.yaml && \
+    asyncapi generate fromTemplate /tmp/asyncapi-warmup/spec.yaml @asyncapi/html-template \
+      --output /tmp/asyncapi-warmup/out --no-interactive --install --force-write 2>&1 || true && \
+    rm -rf /tmp/asyncapi-warmup
+
+WORKDIR /app
+
+COPY --from=build-back /app/node_modules ./node_modules
+COPY --from=build-back /app/shared ./shared
+COPY --from=build-back /app/back/dist ./back/dist
+COPY --from=build-back /app/back/package.json ./back/
+
+# Volume mount point for generated docs
+RUN mkdir -p /app/docs-output
+
+ENV NODE_ENV=production
+ENV PORT=3000
+ENV DOCS_OUTPUT_DIR=/app/docs-output
+
+EXPOSE 3000
+
+HEALTHCHECK --interval=30s --timeout=3s --start-period=10s --retries=3 \
+  CMD wget --no-verbose --tries=1 --spider http://localhost:3000/health || exit 1
+
+WORKDIR /app/back
+CMD ["node", "dist/main"]
+
+# -----------------------------------------------------------------------------
+# Target: front
+# -----------------------------------------------------------------------------
+FROM nginx:alpine AS front
+
+COPY infra/nginx.conf /etc/nginx/conf.d/default.conf
+COPY --from=build-front /app/front-public/dist/front-public/browser /usr/share/nginx/html
+
+EXPOSE 80
+
+HEALTHCHECK --interval=30s --timeout=3s --start-period=5s --retries=3 \
+  CMD wget --no-verbose --tries=1 --spider http://localhost/ || exit 1
+
+CMD ["nginx", "-g", "daemon off;"]