[Local] Dockerized local test stack + always-show OTP in Development

Add docker-compose.local.yml + Dockerfile.local (public MS images + Liara NuGet) to run the whole app with a throwaway Postgres in one command for local testing, plus LOCAL.md. OtpService now never calls Kavenegar in the Development environment and always returns the code so the login page shows it on screen — guarantees local logins work with no SMS. Production behavior unchanged.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

docker-compose.local.yml

@@ -0,0 +1,50 @@
+# Local test stack — build from source + a throwaway Postgres. Nothing here touches production.
+#
+#   docker compose -f docker-compose.local.yml up --build
+#   → open http://localhost:8080
+#
+# Runs in the Development environment, so:
+#   • the login OTP code is shown ON SCREEN (no SMS sent via Kavenegar)
+#   • sample Tehran demo data (facilities/shifts/jobs) is seeded automatically
+# Admin login: phone 09120000000  → request code → the code appears on the page.
+name: hamkadr-local
+
+services:
+  app:
+    build:
+      context: .
+      dockerfile: Dockerfile.local
+    container_name: hamkadr_local_app
+    restart: unless-stopped
+    depends_on:
+      db:
+        condition: service_healthy
+    ports:
+      - "8080:8080"
+    environment:
+      ASPNETCORE_ENVIRONMENT: "Development"     # ← OTP on screen, demo data, no Kavenegar
+      ASPNETCORE_URLS: "http://+:8080"
+      ConnectionStrings__Default: "Host=db;Port=5432;Database=hamkadr;Username=hamkadr;Password=hamkadr_local"
+      Auth__AdminPhone: "09120000000"
+      DOTNET_CLI_TELEMETRY_OPTOUT: "1"
+
+  db:
+    image: postgres:16-alpine
+    container_name: hamkadr_local_db
+    restart: unless-stopped
+    environment:
+      POSTGRES_DB: hamkadr
+      POSTGRES_USER: hamkadr
+      POSTGRES_PASSWORD: hamkadr_local
+    ports:
+      - "5434:5432"        # exposed for inspection; 5434 avoids clashing with your dev DB on 5433
+    volumes:
+      - hamkadr_local_db:/var/lib/postgresql/data
+    healthcheck:
+      test: ["CMD-SHELL", "pg_isready -U hamkadr -d hamkadr"]
+      interval: 5s
+      timeout: 5s
+      retries: 20
+
+volumes:
+  hamkadr_local_db: