Extract test string literal constants in parent-child tests

[oocx]

Summary

Multiple test files contain repeated string literals (used >3 times) that should be extracted to constants for easier maintenance.

Affected Files

• ReportModelBuilderParentChildTests.cs
• ReportModelBuilderParentChildEdgeCaseTests.cs
• ConfigurationReferenceResolverTests.cs
• Parsing/TerraformPlanParserTests.cs
• Providers/AzureDevOps/AzureDevOpsModule.cs

Common Repeated Literals

• "managed" (15+ times)
• "custom" (16+ times)
• "create" (13+ times)
• "custom_parent.team" (7 times)
• "custom_child.member1" (4 times)
• "group_object_id" (5 times)
• "parent_id" (4+ times)
• "member" (8+ times)
• "descriptor" (4+ times)
• "administrator" (4+ times)

Example Refactoring

// Before
var parent = CreateResource("custom_parent.team", "custom", "managed", ...);
var child = CreateResource("custom_child.member1", "custom", "managed", ...);

// After
private const string ParentAddress = "custom_parent.team";
private const string ChildAddress = "custom_child.member1";
private const string ParentType = "custom";
private const string Mode = "managed";

var parent = CreateResource(ParentAddress, ParentType, Mode, ...);
var child = CreateResource(ChildAddress, ParentType, Mode, ...);

Priority: Low
Effort: Small
Impact: Test maintainability improvement

Related Work

• Feature 068: Parent-Child Resource Grouping
• Code Review: docs/features/068-parent-child-resource-grouping/code-review.md

Notes

Test readability is clear as-is. This is a maintenance quality-of-life improvement for future test modifications.