Fix hardcoded exception in processDeliveryItem method

[cursor]

Summary

Fixes ANDROID-DN

This PR resolves the issue where a hardcoded MainFragment$BackendAPIException was being thrown in the processDeliveryItem() method when the checkout API fails.

Problem

When the Android app's checkout flow encounters an HTTP 500 error (e.g., due to backend inventory validation failures), the app enters the failure handling path and calls processDeliveryItem(). However, instead of properly handling the delivery workflow initialization, the method was deliberately throwing a hardcoded exception on line 427.

Root Cause Flow:

1. User clicks cart button in Android app
2. User selects items and proceeds to checkout
3. App requests checkout via POST to /checkout endpoint
4. Backend rejects with HTTP 500 due to inventory validation failure
5. Android app calls processDeliveryItem() which throws hardcoded exception
6. This causes unnecessary BackendAPIException to be thrown

Solution

Removed the deliberate throw statement and replaced it with proper error handling:

• Logs a warning that checkout failed and delivery workflow cannot be initialized
• Sets the span status to INTERNAL_ERROR appropriately
• Completes without throwing an unnecessary exception
• Still captures any genuine exceptions that may occur in the catch block

Changes

Modified app/src/main/java/com/example/vu/android/empowerplant/MainFragment.java:

• Line 427: Removed throw new MainFragment.BackendAPIException("Failed to init delivery workflow");
• Added proper logging and error handling instead

Testing

The fix ensures that when checkout fails:

• The error is properly logged with appropriate severity
• Sentry tracking continues to work correctly (span status is set to INTERNAL_ERROR)
• The app doesn't crash with an unnecessary hardcoded exception
• The checkout transaction properly finishes with INTERNAL_ERROR status

  

[codecov]

Codecov Report

❌ Patch coverage is 0% with 2 lines in your changes missing coverage. Please review.
✅ Project coverage is 0.00%. Comparing base (814e302) to head (c831d83).

Files with missing lines	Patch %	Lines
.../example/vu/android/empowerplant/MainFragment.java	0.00%	2 Missing ⚠️

Additional details and impacted files

@@          Coverage Diff          @@
##            main    #206   +/-   ##
=====================================
  Coverage   0.00%   0.00%           
=====================================
  Files         16      16           
  Lines        864     866    +2     
  Branches      65      65           
=====================================
- Misses       864     866    +2     

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