chore: import upstream snapshot with attribution

apps/supervisor/.env.example

@@ -0,0 +1,20 @@
+# This needs to match the token of the worker group you want to connect to
+TRIGGER_WORKER_TOKEN=
+
+# This needs to match the MANAGED_WORKER_SECRET env var on the webapp
+MANAGED_WORKER_SECRET=managed-secret
+
+# Point this at the webapp in prod
+TRIGGER_API_URL=http://localhost:3030
+
+# Point this at the webapp or an OTel collector in prod
+OTEL_EXPORTER_OTLP_ENDPOINT=http://localhost:3030/otel
+# Use this on macOS
+# OTEL_EXPORTER_OTLP_ENDPOINT=http://host.docker.internal:3030/otel
+
+# Optional settings
+DEBUG=1
+TRIGGER_DEQUEUE_INTERVAL_MS=1000
+
+# Dev-only: stream this process's logs over a local telnet/TCP socket (nc localhost 6769). Uncomment to enable.
+# SUPERVISOR_TELNET_LOGS_PORT=6769