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+# First Usable Version
+
+This directory is the current working version of the Linux native backend.
+
+Snapshot label:
+
+`v1-usable`
+
+Notes:
+
+- Captures the current Docker-based backend layout.
+- Includes the current protocol compatibility work for login, room listing, join flow, and turn progression.
+- Intended as the first rollback point before further fixes.