V0.38.2 library packages (#235)

Co-authored-by: gobha <jasafpro@gmail.com>
Co-committed-by: gobha <jasafpro@gmail.com>

server/store/interfaces.go

@@ -66,6 +66,7 @@ type Stores struct {
 	RateLimits      RateLimitStore           // v0.32.0: Distributed rate limiting
 	Export          ExportStore              // v0.34.0: Data portability batch reads + GDPR ops
 	Connections     ConnectionStore          // v0.38.1: Extension connection credentials
+	Dependencies    DependencyStore          // v0.38.2: Library package dependency graph
 }
 
 // =========================================
@@ -1396,6 +1397,35 @@ type ConnectionStore interface {
 	DeleteByIDAndScope(ctx context.Context, id, scope, ownerID string) (int64, error)
 }
 
+// =========================================
+// DEPENDENCY STORE (v0.38.2)
+// =========================================
+
+type DependencyStore interface {
+	// Create records that consumerID depends on libraryID.
+	Create(ctx context.Context, dep *models.ExtDependency) error
+
+	// Delete removes a single dependency record.
+	Delete(ctx context.Context, consumerID, libraryID string) error
+
+	// DeleteAllForConsumer removes all dependency records for a consumer.
+	// Called when uninstalling a consumer package.
+	DeleteAllForConsumer(ctx context.Context, consumerID string) error
+
+	// ListByConsumer returns all libraries that consumerID depends on.
+	ListByConsumer(ctx context.Context, consumerID string) ([]models.ExtDependency, error)
+
+	// ListByLibrary returns all consumers that depend on libraryID.
+	ListByLibrary(ctx context.Context, libraryID string) ([]models.ExtDependency, error)
+
+	// ListAll returns the full dependency graph.
+	ListAll(ctx context.Context) ([]models.ExtDependency, error)
+
+	// HasConsumers returns true if any package depends on libraryID.
+	// Used for uninstall protection.
+	HasConsumers(ctx context.Context, libraryID string) (bool, error)
+}
+
 // =========================================
 
 // ListOptions provides standard pagination/sort for list queries.