[oleg-rd]

Problem

When we want to stop build, SDK sends PATCH /builds/{id} with an empty body. Backend relied on a fallback that treated an empty body as isRunning = false:

// src/builds/builds.controller.ts (≤ api-v5.0.13)
if (modifyBuildDto === null || Object.keys(modifyBuildDto).length === 0) {
  modifyBuildDto.isRunning = false;
}

This was removed in Visual-Regression-Tracker/backend@a5da984 (#336, NestJS v11 upgrade), released in api-v5.1.0. Since then, stop() is a no-op and builds stay in "running" state.

Fix

• Added request/ModifyBuildRequest (isRunning), mirroring backend ModifyBuildDto
• stop() now sends {"isRunning":false}
• shouldStopBuild test now asserts the request body

Backward compatible with older backends (explicit isRunning: false was always supported).

[oleg-rd]

Hey @pashidlos, could you take a look when you have a chance?