feat(infra): dockerised full-stack dev mode — apps compose profile (ADR-0030)

Add an 'apps' Compose profile that runs the three Nx dev servers
(portal-bff, portal-shell, portal-admin) from a shared Dockerfile.dev,
so the whole stack boots with 'dev.sh up apps' and no native Node/pnpm.

- Dockerfile.dev: node:24-bookworm + corepack (pnpm from packageManager
  at runtime), NX_DAEMON=false. No build-time COPY/install.
- dev-entrypoint.sh: BFF runs prisma generate + migrate deploy then
  serves; SPA services go straight to nx serve.
- dev.compose.yml: one-shot apps-deps installs into a shared
  node_modules volume once (apps gate on its completion, no install
  race); repo bind-mounted, node_modules + .nx in named volumes; BFF
  reuses its own .env (required:false) with host URLs overridden to
  Compose service names.
- dev.sh: apps added to ALL_PROFILES + usage.
- Docs: which-mode-when table (setup doc), apps section (infra README),
  CLAUDE.md roll-up. ADR-0030 flipped to accepted.

Dev-only; production images stay with the ADR-0028 Container Registry
work. Additive + profile-gated — native and devcontainer flows
unchanged. Full-boot validation pending on a Docker host (see PR body).

infra/local/dev-entrypoint.sh

@@ -0,0 +1,26 @@
+#!/usr/bin/env bash
+# Shared entrypoint for the ADR-0030 `apps` Compose profile services.
+#
+# Behaviour is driven by env + the passed command:
+#   - The `apps-deps` one-shot service runs `pnpm install` as its
+#     command; this entrypoint just execs it (APF_ROLE unset → no
+#     prisma). It populates the shared node_modules volume once, so
+#     the app services don't race three concurrent installs.
+#   - The BFF service sets APF_ROLE=bff → this entrypoint runs
+#     `prisma generate` + `prisma migrate deploy` (client + committed
+#     migrations) before serving. `migrate deploy`, never `migrate
+#     dev` — a container never authors migrations.
+#   - The SPA services (portal-shell / portal-admin) leave APF_ROLE
+#     unset → straight to `exec "$@"` (nx serve).
+set -euo pipefail
+cd /workspace
+
+if [[ "${APF_ROLE:-}" == "bff" ]]; then
+  echo "[dev-entrypoint] BFF: prisma generate"
+  pnpm exec prisma generate
+  echo "[dev-entrypoint] BFF: prisma migrate deploy"
+  pnpm exec prisma migrate deploy
+fi
+
+echo "[dev-entrypoint] exec: $*"
+exec "$@"