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/k8s/ingressroutes.yaml

@@ -0,0 +1,79 @@
+# IngressRoutes pour datacat dans le namespace dev
+# Frontend: https://datacat.dev.chmod777.dev
+# API:      https://api.datacat.dev.chmod777.dev
+
+# --- Frontend HTTP → HTTPS redirect ---
+apiVersion: traefik.io/v1alpha1
+kind: IngressRoute
+metadata:
+  name: frontend-http
+  namespace: datacat
+spec:
+  entryPoints: [web]
+  routes:
+    - match: Host(`datacat.dev.chmod777.dev`)
+      kind: Rule
+      middlewares:
+        - name: redirect-https
+          namespace: dev
+      services:
+        - name: frontend
+          port: 80
+---
+# --- Frontend HTTPS avec Basic Auth ---
+apiVersion: traefik.io/v1alpha1
+kind: IngressRoute
+metadata:
+  name: frontend-https
+  namespace: datacat
+spec:
+  entryPoints: [websecure]
+  routes:
+    - match: Host(`datacat.dev.chmod777.dev`)
+      kind: Rule
+      middlewares:
+        - name: dev-basic-auth
+          namespace: dev
+      services:
+        - name: frontend
+          port: 80
+  tls:
+    certResolver: letsencrypt
+---
+# --- API HTTP → HTTPS redirect ---
+apiVersion: traefik.io/v1alpha1
+kind: IngressRoute
+metadata:
+  name: backend-http
+  namespace: datacat
+spec:
+  entryPoints: [web]
+  routes:
+    - match: Host(`api.datacat.dev.chmod777.dev`)
+      kind: Rule
+      middlewares:
+        - name: redirect-https
+          namespace: dev
+      services:
+        - name: backend
+          port: 80
+---
+# --- API HTTPS avec Basic Auth ---
+apiVersion: traefik.io/v1alpha1
+kind: IngressRoute
+metadata:
+  name: backend-https
+  namespace: datacat
+spec:
+  entryPoints: [websecure]
+  routes:
+    - match: Host(`api.datacat.dev.chmod777.dev`)
+      kind: Rule
+      middlewares:
+        - name: dev-basic-auth
+          namespace: dev
+      services:
+        - name: backend
+          port: 80
+  tls:
+    certResolver: letsencrypt