worshop work

docs/UPDATE_POLICY.md

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+# GSP Update Policy
+
+Workspace reference: [`GSP-WORKSPACE.md`](../../GSP-WORKSPACE.md)
+
+## Update rule
+
+Code updates must never remove customer-owned data.
+
+Never overwrite or delete:
+
+- home folders
+- game server data
+- save files
+- configuration files
+- Workshop content
+- custom scripts
+- uploads
+- logs unless a documented rotation policy applies
+
+## What may be updated
+
+- application code
+- bundled helper scripts explicitly owned by the product
+- update metadata used by the Panel or agents
+
+## Cross-repository rule
+
+If an update path changes panel behavior, agent startup behavior, or filesystem ownership assumptions, update the docs in all affected repositories before the code change is considered complete.