chore: stop tracking local spacetime config

.gitignore

@@ -32,6 +32,7 @@ temp*build*/
 /logs
 .worktrees/
 .env.secrets.local
+spacetime.local.json
 
 # Local load-test data extracted from private migration files
 scripts/loadtest/data/*.local.json

spacetime.local.json

@@ -1,3 +0,0 @@
-{
-  "database": "genarrative-dev-edu"
-}