fix: serialize profile reset operations

packages/infra/prisma/gateway-migrations/20260731002000_add_active_operation_profile_unique/migration.sql

@@ -0,0 +1,6 @@
+-- A profile database can have only one destructive/runtime operation in flight.
+-- Existing duplicates intentionally make this migration fail so an operator can
+-- inspect and resolve them instead of silently discarding an operation.
+CREATE UNIQUE INDEX "gateway_operation_one_active_per_profile_idx"
+    ON "gateway_operation" ("profile_name")
+    WHERE "status" IN ('QUEUED', 'RUNNING');

packages/infra/prisma/gateway-migrations/20260731003000_add_operation_lease/migration.sql

@@ -0,0 +1,8 @@
+ALTER TABLE "gateway_operation"
+    ADD COLUMN "lease_owner" TEXT,
+    ADD COLUMN "lease_until" TIMESTAMPTZ,
+    ADD COLUMN "heartbeat_at" TIMESTAMPTZ,
+    ADD COLUMN "attempts" INTEGER NOT NULL DEFAULT 0;
+
+CREATE INDEX "gateway_operation_status_lease_until_created_at_idx"
+    ON "gateway_operation" ("status", "lease_until", "created_at");

packages/infra/prisma/gateway.prisma

@@ -174,6 +174,8 @@ model GatewayRuntimeAction {
 }
 
 model GatewayOperation {
+  /// A partial unique index in the gateway migration chain permits only one
+  /// QUEUED or RUNNING operation per profile.
   id                String                 @id @default(uuid())
   profileName       String                 @map("profile_name")
   profile           GatewayProfile         @relation(fields: [profileName], references: [profileName], onDelete: Cascade)
@@ -189,10 +191,15 @@ model GatewayOperation {
   startedAt         DateTime?              @map("started_at")
   completedAt       DateTime?              @map("completed_at")
   error             String?
+  leaseOwner        String?                @map("lease_owner")
+  leaseUntil        DateTime?              @map("lease_until")
+  heartbeatAt       DateTime?              @map("heartbeat_at")
+  attempts          Int                    @default(0)
   createdAt         DateTime               @default(now()) @map("created_at")
   updatedAt         DateTime               @updatedAt @map("updated_at")
 
   @@index([status, scheduledAt, createdAt])
+  @@index([status, leaseUntil, createdAt])
   @@index([profileName, createdAt])
   @@map("gateway_operation")
 }