Define server-authoritative symbol semantics (#29)

docs/GAMETESTS.md

@@ -1,15 +1,15 @@
 # GameTest suites
 
-The default dedicated-server run is a small smoke suite: 16 Rivencraft tests
+The default dedicated-server run is a small smoke suite: 17 Rivencraft tests
 cover core linking, deterministic Age definition, writing persistence, legacy
 data migration, workstation transactions, and forged/replayed menu actions.
-NeoForge currently adds two of its own tests, so the runner reports 18.
+NeoForge currently adds two of its own tests, so the runner reports 19.
 
 ```shell
 ./gradlew runGameTestServer
 ```
 
-The remaining 46 Rivencraft tests are archived, not deleted. They cover
+The remaining 47 Rivencraft tests are archived, not deleted. They cover
 completed milestone details such as every Age terrain profile, Notebook and
 Desk surface interactions, refill edge cases, book assembly controls, and
 workstation break/drop behavior. Run only the relevant archive alongside the
@@ -21,7 +21,7 @@ core tests when investigating an issue:
 ```
 
 Available suite names are `linking`, `writing`, `desk`, `binder`, `mixer`, and
-`recipe`. Run all 62 Rivencraft tests (64 including NeoForge's two) before a
+`recipe`. Run all 64 Rivencraft tests (66 including NeoForge's two) before a
 release or after broad cross-system changes:
 
 ```shell