test(int): scope reservation vehicle and respawn balance assertions to the run

- vehicle fixtures are named to sort first so the 50-item name-sorted options
  window includes them even on a DB crowded with older idle vehicles
- the respawn bridge assertion filters to this run's steam ids so leaked rows
  from aborted runs cannot break exact equality

tests/int/operation-reservation-options.int.spec.ts

@@ -140,7 +140,11 @@ async function makeVehicle(status: "idle" | "assigned"): Promise<number> {
   const vehicle = await payload.create({
     collection: "game-vehicles",
     data: {
-      name: `${RUN} vic ${gameVehicleIds.length}`,
+      // "!" sorts before alphanumerics: the vehicle query serves the top
+      // MAX_VEHICLES idle vehicles sorted by name, so this keeps this run's
+      // fixtures inside the served window even on a DB crowded with older
+      // idle vehicles.
+      name: `!${RUN} vic ${gameVehicleIds.length}`,
       type: vehicleBlueprintId,
       deployedAt: gameStructureIds[0],
       status,

tests/int/respawn-tickets.int.spec.ts

@@ -248,7 +248,13 @@ describe("Respawn ticket settlement", () => {
 
   it("serves steamId-keyed balances above zero to the bridge", async () => {
     const tickets = await getTicketBalances(payload);
-    expect(tickets).toEqual({
+    // The bridge map covers every member with a positive balance; scope the
+    // assertion to this run's steam ids so leaked rows from other sessions
+    // cannot break exact equality.
+    const runTickets = Object.fromEntries(
+      Object.entries(tickets).filter(([steamId]) => steamId.startsWith(`${RUN}-`)),
+    );
+    expect(runTickets).toEqual({
       [`${RUN}-sid-yes`]: 2,
       [`${RUN}-sid-tent`]: 0.5,
       [`${RUN}-sid-no`]: 0.25,