Fix: Critical crash in filter menu and Fastlane UI import issue

[graycreate]

Summary

This PR addresses two critical issues:

1. App crash when filter menu content is empty - Fixes index out of range error reported in TestFlight feedback
2. Fastlane changelog helper UI import error - Resolves build pipeline failure

Changes

1. Filter Menu Crash Fix (FeedInfo.swift)

File: V2er/State/DataFlow/Model/FeedInfo.swift:28

Problem:

• App crashes with "Index out of range" when accessing empty filter results
• Crash reported on iPhone17,1 running iOS 26.0.1
• Error occurred in FeedInfo.isValid() method

Root Cause:

// Before (incorrect)
return items.count > 0 || items[0].userName.notEmpty

The logic used || (OR) which attempts to access items[0] even when array is empty.

Solution:

// After (correct)
return items.count > 0 && items[0].userName.notEmpty

Changed to && (AND) to ensure items[0] is only accessed when array has elements.

Impact: Prevents crash when navigating to filter categories with no content.

2. Fastlane UI Import Fix (changelog_helper.rb)

File: fastlane/changelog_helper.rb:8

Problem:

• GitHub Actions workflow failing with NameError: uninitialized constant ChangelogHelper::UI
• Blocked release pipeline from extracting changelog entries

Root Cause:

# Before (incorrect)
UI = FastlaneCore::UI unless Fastlane.const_defined?(:UI)

Referenced undefined Fastlane module causing NameError.

Solution:

# After (correct)
UI = FastlaneCore::UI unless defined?(UI)

Use Ruby's defined?() to properly check constant existence.

Impact: Enables automatic changelog extraction for TestFlight release notes.

Test Plan

• Verify app doesn't crash when accessing empty filter categories
• Test navigation through all filter menu options
• Confirm Fastlane beta lane runs successfully
• Verify changelog extraction works in CI pipeline
• Run existing test suite to ensure no regressions

Related Issues

• TestFlight crash feedback (Incident ID: 01ADA8EF-641A-4F3B-B19D-F03FD826C7B3)
• GitHub Actions workflow failures (runs #18409401797, #18409321673, #18408812234)

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🤖 Generated with Claude Code

[Copilot]

Pull Request Overview

This PR fixes two critical production issues: an app crash when accessing empty filter menus and a build pipeline failure in the Fastlane changelog helper.

• Fixed logical error causing index out of range crash in filter menu validation
• Corrected Ruby constant definition check in Fastlane build script

Reviewed Changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated no comments.

File	Description
V2er/State/DataFlow/Model/FeedInfo.swift	Fixed logical operator in isValid() method to prevent array access when empty
fastlane/changelog_helper.rb	Corrected constant existence check to fix build pipeline

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