graph

const (
	NodeProduct     NodeLabel = "Product"
	NodeRelease     NodeLabel = "Release"
	NodeFeature     NodeLabel = "Feature"
	NodeRequirement NodeLabel = "Requirement"
	NodeEpic        NodeLabel = "Epic"
	NodeInitiative  NodeLabel = "Initiative"
	NodeGoal        NodeLabel = "Goal"
	NodeIdea        NodeLabel = "Idea"
	NodeUser        NodeLabel = "User"
	NodeComment     NodeLabel = "Comment"
	NodeTag         NodeLabel = "Tag"
)

const (
	// Containment relationships
	RelContains         RelationType = "CONTAINS"           // Product → Release, Feature, Epic, etc.
	RelBelongsTo        RelationType = "BELONGS_TO"         // Feature → Product
	RelInRelease        RelationType = "IN_RELEASE"         // Feature, Epic → Release
	RelHasRequirement   RelationType = "HAS_REQUIREMENT"    // Feature → Requirement
	RelPartOfInitiative RelationType = "PART_OF_INITIATIVE" // Feature, Epic → Initiative
	RelSupportsGoal     RelationType = "SUPPORTS_GOAL"      // Initiative, Feature → Goal

	// People relationships
	RelAssignedTo RelationType = "ASSIGNED_TO" // Feature, Requirement → User
	RelCreatedBy  RelationType = "CREATED_BY"  // Idea, Comment → User
	RelOwnedBy    RelationType = "OWNED_BY"    // Product, Initiative → User

	// Dependency/linking relationships
	RelDependsOn  RelationType = "DEPENDS_ON" // Feature → Feature
	RelBlocks     RelationType = "BLOCKS"     // Feature → Feature
	RelImplements RelationType = "IMPLEMENTS" // Feature → Idea
	RelRelatedTo  RelationType = "RELATED_TO" // Generic relationship
	RelParentOf   RelationType = "PARENT_OF"  // Epic → Feature, Initiative → Epic
	RelChildOf    RelationType = "CHILD_OF"   // Feature → Epic

	// Tagging
	RelTaggedWith RelationType = "TAGGED_WITH" // Feature, Epic → Tag

	// Comments
	RelCommentOn RelationType = "COMMENT_ON" // Comment → Feature, Idea, etc.

	// Time-based
	RelPrecedes RelationType = "PRECEDES" // Release → Release
	RelFollows  RelationType = "FOLLOWS"  // Release → Release
)