IOS-5364 Update workflow documentation for test_fastlane_build and ipa workflows

Author: ignatovv

.github/WORKFLOWS_REFERENCE.md

@@ -66,8 +66,8 @@ This document provides an overview of GitHub workflows, custom actions, and auto
 
 #### `ipa.yaml` - IPA Build
 **File:** `.github/workflows/ipa.yaml`
-**Triggers:** Manual dispatch
-**Purpose:** Creates IPA builds for distribution outside TestFlight/App Store.
+**Triggers:** Manual dispatch, workflow call (called from test run repository)
+**Purpose:** Builds IPA file for the application. Invoked from the test run repository for automated testing.
 
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@@ -163,10 +163,11 @@ This document provides an overview of GitHub workflows, custom actions, and auto
 
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-#### `test_fastlane_build.yaml` - Fastlane Testing
+#### `test_fastlane_build.yaml` - Workflow Development Testing
 **File:** `.github/workflows/test_fastlane_build.yaml`
 **Triggers:** Manual dispatch
-**Purpose:** Tests Fastlane configuration changes without full builds.
+**Purpose:** Test workflow used when developing new GitHub workflows. Helps test workflow changes before merging to dev branch.
+**Note:** Due to GitHub limitations, new workflow files are not visible in the Actions UI until merged into the dev branch.
 
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@@ -409,5 +410,5 @@ jobs:
 
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-**Last Updated:** 2025-10-27
+**Last Updated:** 2025-10-29
 **Maintainers:** iOS Team