diff --git a/app/gateway-api/src/orchestrator/gatewayOrchestrator.ts b/app/gateway-api/src/orchestrator/gatewayOrchestrator.ts
index d7e4b3a..316980b 100644
--- a/app/gateway-api/src/orchestrator/gatewayOrchestrator.ts
+++ b/app/gateway-api/src/orchestrator/gatewayOrchestrator.ts
@@ -327,16 +327,18 @@ export const buildWorkspaceCommands = (
             env,
         });
     }
-    for (const packageName of [
-        '@sammo-ts/common',
-        '@sammo-ts/infra',
-        '@sammo-ts/logic',
-        '@sammo-ts/game-api',
-        '@sammo-ts/game-engine',
-    ]) {
+    const buildSteps: Array<[filter: string, script: string]> = [
+        ['@sammo-ts/common', 'build'],
+        ['@sammo-ts/infra', 'prisma:generate'],
+        ['@sammo-ts/infra', 'build'],
+        ['@sammo-ts/logic', 'build'],
+        ['@sammo-ts/game-api', 'build'],
+        ['@sammo-ts/game-engine', 'build'],
+    ];
+    for (const [filter, script] of buildSteps) {
         commands.push({
             command: 'pnpm',
-            args: ['--filter', packageName, 'build'],
+            args: ['--filter', filter, script],
             cwd: workspaceRoot,
             env,
         });
diff --git a/app/gateway-api/test/orchestratorPlan.test.ts b/app/gateway-api/test/orchestratorPlan.test.ts
index 4505621..6e893b5 100644
--- a/app/gateway-api/test/orchestratorPlan.test.ts
+++ b/app/gateway-api/test/orchestratorPlan.test.ts
@@ -103,6 +103,7 @@ describe('buildWorkspaceCommands', () => {
         expect(commands.map(({ args }) => args)).toEqual([
             ['install'],
             ['--filter', '@sammo-ts/common', 'build'],
+            ['--filter', '@sammo-ts/infra', 'prisma:generate'],
             ['--filter', '@sammo-ts/infra', 'build'],
             ['--filter', '@sammo-ts/logic', 'build'],
             ['--filter', '@sammo-ts/game-api', 'build'],
diff --git a/docs/architecture/runtime.md b/docs/architecture/runtime.md
index a524464..56273b1 100644
--- a/docs/architecture/runtime.md
+++ b/docs/architecture/runtime.md
@@ -87,7 +87,7 @@ Gateway runs a lightweight cron loop (setInterval) that:
 - Each workspace stores `lastUsedAt` in DB so cleanup can remove stale worktrees.
 - Cleanup is invoked manually by admin API and removes worktrees unused for 6+ months.
 - Build runs `pnpm install` when workspace is created, then executes
-  the common, infra, and logic dependency builds before
+  the common build, Prisma client generation, and infra/logic dependency builds before
   `pnpm --filter @sammo-ts/game-api build` and
   `pnpm --filter @sammo-ts/game-engine build`, then marks build success/failure.
 - On success, status moves to `PREOPEN` for reserved builds or stays unchanged for manual builds.