feat: add integration tests for initialization flow

- Implemented end-to-end integration tests covering database reset, bootstrap admin creation, demo user provisioning, scenario installation, and general creation.
- Added support for deterministic seeding and auto admin general creation.
- Created a new package for integration tests with necessary configurations and scripts.
- Updated various modules to support new features, including admin user handling and scenario seeding.
- Enhanced error handling and validation in the join and orchestrator modules.

pnpm-lock.yaml

@@ -215,6 +215,9 @@ importers:
       '@sammo-ts/infra':
         specifier: workspace:*
         version: link:../../packages/infra
+      '@sammo-ts/logic':
+        specifier: workspace:*
+        version: link:../../packages/logic
       '@trpc/server':
         specifier: ^11.8.1
         version: 11.8.1(typescript@5.9.3)
@@ -394,6 +397,34 @@ importers:
 
   tools/build-scripts: {}
 
+  tools/integration-tests:
+    dependencies:
+      '@sammo-ts/common':
+        specifier: workspace:*
+        version: link:../../packages/common
+      '@sammo-ts/game-api':
+        specifier: workspace:*
+        version: link:../../app/game-api
+      '@sammo-ts/game-engine':
+        specifier: workspace:*
+        version: link:../../app/game-engine
+      '@sammo-ts/gateway-api':
+        specifier: workspace:*
+        version: link:../../app/gateway-api
+      '@sammo-ts/infra':
+        specifier: workspace:*
+        version: link:../../packages/infra
+      '@trpc/client':
+        specifier: ^11.8.1
+        version: 11.8.1(@trpc/server@11.8.1(typescript@5.9.3))(typescript@5.9.3)
+    devDependencies:
+      vite-tsconfig-paths:
+        specifier: ^6.0.3
+        version: 6.0.3(typescript@5.9.3)(vite@7.3.1(@types/node@25.0.3)(jiti@2.6.1)(lightningcss@1.30.2))
+      vitest:
+        specifier: ^4.0.16
+        version: 4.0.16(@types/node@25.0.3)(jiti@2.6.1)(lightningcss@1.30.2)
+
 packages:
 
   '@babel/generator@7.28.5':