From 60ff4fe4a0d44db88c8c80cf30933c7dd785992d Mon Sep 17 00:00:00 2001
From: Peter Steinberger <steipete@gmail.com>
Date: Tue, 11 Aug 2026 11:14:40 -0700
Subject: [PATCH] fix(agents): model rehearsal modes as discriminants

---
 src/commands/agents.db-rehearsal.ts | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/src/commands/agents.db-rehearsal.ts b/src/commands/agents.db-rehearsal.ts
index 9f9dbcdf217e..9686b20195d0 100644
--- a/src/commands/agents.db-rehearsal.ts
+++ b/src/commands/agents.db-rehearsal.ts
@@ -68,14 +68,16 @@ type InventoryRequest = {
   configPath: string;
 };
 
-type RehearsalRequest = {
+type RehearsalRequestBase = {
   schemaVersion: 1;
-  mode: "migrate" | "read-only";
   privateStateRoot: string;
   agents: AgentDatabaseRequest[];
   pluginPersistence: PluginPersistenceDeclaration[];
 };
 
+type RehearsalRequest = RehearsalRequestBase &
+  ({ mode: "migrate" } | { mode: "read-only" });
+
 type ParsedRequest = InventoryRequest | RehearsalRequest;
 
 type DatabaseSnapshot = {