Add isolated development environment

.env.dev.example

@@ -0,0 +1,20 @@
+# Copying this file is optional. scripts/dev-env-init.sh generates strong secrets.
+APP_ENV=development
+APP_TIMEZONE=America/Winnipeg
+POSTGRES_DB=minerops_dev
+POSTGRES_USER=minerops_dev
+POSTGRES_PASSWORD=replace-with-a-random-local-only-secret
+POSTGRES_HOST=postgres
+POSTGRES_PORT=5432
+DATABASE_URL=postgresql://minerops_dev:replace-with-a-random-local-only-secret@postgres:5432/minerops_dev
+REDIS_URL=redis://redis:6379/0
+JWT_SECRET_KEY=replace-with-a-random-local-only-secret
+MINEROPS_AGENT_SHARED_SECRET=replace-with-a-random-local-only-secret
+MINEROPS_DEV_PORT=18000
+
+# Safety interlocks: keep these values disabled for development.
+SCHEDULED_SCAN_ENABLED=false
+MINEROPS_HUB_MODE=true
+MINEROPS_DISABLE_LOCAL_SCANNER=true
+MINEROPS_ENABLE_REAL_REBOOT=false
+MINEROPS_ENABLE_REAL_POWER_CONTROL=false