Add BuildConfig to RevenueCat to gate workflow prewarming

[facumenzella]

Summary

A customer reported about 404's on GET /v1/subscribers/<app_user_id>/workflows/<workflow_id>

• Add BuildConfig.USE_WORKFLOWS_ENDPOINT to the :purchases module, using the existing revenuecat.useWorkflowsEndpoint property that was already used by RevenueCatUI.
• Gate automatic workflow pre-warming in PurchasesFactory behind that core module flag.

Root Cause

PurchasesFactory always supplied a workflowPreWarmer, so every offerings fetch with a current offering called getWorkflow for that offering identifier. That created automatic workflow requests for apps that did not opt in to the workflows endpoint.

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Note

Low Risk
Opt-in behavior via an existing build flag (defaults off); only reduces unsolicited network calls unless workflows are explicitly enabled.

Overview
Stops the core :purchases SDK from always pre-fetching workflows when offerings load, which was causing unwanted GET /v1/subscribers/.../workflows/... traffic and 404s for apps that never enabled workflows.

The module now exposes BuildConfig.USE_WORKFLOWS_ENDPOINT, driven by the existing revenuecat.useWorkflowsEndpoint Gradle/local property (same knob RevenueCat UI already used). PurchasesFactory.createWorkflowPreWarmer only supplies a pre-warmer when that flag is true; otherwise OfferingsManager gets null and skips background getWorkflow calls. Unit tests cover both enabled and disabled paths.

^{Reviewed by Cursor Bugbot for commit bc9242e. Bugbot is set up for automated code reviews on this repo. Configure here.}

[codecov]

Codecov Report

❌ Patch coverage is 81.81818% with 2 lines in your changes missing coverage. Please review.
✅ Project coverage is 79.92%. Comparing base (aa1c14c) to head (bc9242e).

Files with missing lines	Patch %	Lines
...otlin/com/revenuecat/purchases/PurchasesFactory.kt	81.81%	2 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #3505      +/-   ##
==========================================
+ Coverage   79.89%   79.92%   +0.03%     
==========================================
  Files         369      369              
  Lines       14875    14880       +5     
  Branches     2048     2049       +1     
==========================================
+ Hits        11884    11893       +9     
+ Misses       2158     2154       -4     
  Partials      833      833              

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