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+# Contributing
+
+MobilityOps contributions must preserve fleet-data privacy, deterministic demo behaviour and the fail-closed integration boundaries documented in `SECURITY.md`.
+
+- use synthetic vehicles, customers, bookings, returns, telematics events and identity claims in tests and screenshots;
+- never commit production databases, exports, operator inventories, private service URLs, tokens, backups or generated browser evidence;
+- keep external integrations configurable through environment variables or explicit deployment configuration;
+- document new personal-data fields, retention, authorization, audit and deletion/export behaviour;
+- add negative tests for authentication, authorization, duplicate handling, webhook validation, path containment and stale/unavailable providers;
+- review dependencies, images and browser assets for provenance and redistribution rights.
+
+Run the relevant backend, frontend, migration, integration, Compose and managed-validation gates before review. Security-sensitive findings belong through the private process in `SECURITY.md`.