Add Milestone 7 regression and documentation review (#83)

docs/PREVIEW_COMPATIBILITY.md

@@ -66,8 +66,11 @@ unstable in a particular graphics or mod configuration.
 
 For preview-related releases:
 
-1. Run `./gradlew runGameTestServer -PwithArchivedGameTests=true` to verify the complete selection matrix,
-   core Age creation, persistence, and travel without optional renderers.
+1. Run `./gradlew runGameTestServer` for the core selection matrix, Age
+   creation, persistence, and travel without optional renderers. Add the
+   relevant archives from [GameTest guidance](GAMETESTS.md); if a scenario
+   stalls, stop it and hand that exact check to a real client rather than
+   treating the interrupted run as a pass.
 2. Open held Linking and Descriptive Books once with each available backend.
 3. Open both book types from a Book Stand and confirm Explore is disabled.
 4. With Immersive Portals, enter and leave Explore, travel between dimensions,