Remove Dgraph support from the codebase.

Dgraph-related functionality, configuration, and benchmarks have been removed from the project. This streamlines the codebase to focus on supported backends, specifically eliminating Dgraph references in favor of Neo4j and other implementations. Version bumped to reflect the changes.

pkg/database/factory_wasm.go

@@ -24,9 +24,6 @@ type DatabaseConfig struct {
 	QueryCacheMaxAge     time.Duration // ORLY_QUERY_CACHE_MAX_AGE
 	InlineEventThreshold int           // ORLY_INLINE_EVENT_THRESHOLD
 
-	// DGraph-specific settings
-	DgraphURL string // ORLY_DGRAPH_URL
-
 	// Neo4j-specific settings
 	Neo4jURI      string // ORLY_NEO4J_URI
 	Neo4jUser     string // ORLY_NEO4J_USER
@@ -34,7 +31,7 @@ type DatabaseConfig struct {
 }
 
 // NewDatabase creates a database instance based on the specified type.
-// Supported types in WASM: "wasmdb", "dgraph", "neo4j"
+// Supported types in WASM: "wasmdb", "neo4j"
 // Note: "badger" is not available in WASM builds due to filesystem dependencies
 func NewDatabase(
 	ctx context.Context,
@@ -67,12 +64,6 @@ func NewDatabaseWithConfig(
 			return nil, fmt.Errorf("wasmdb database backend not available (import _ \"next.orly.dev/pkg/wasmdb\")")
 		}
 		return newWasmDBDatabase(ctx, cancel, cfg)
-	case "dgraph":
-		// Use the dgraph implementation (HTTP-based, works in WASM)
-		if newDgraphDatabase == nil {
-			return nil, fmt.Errorf("dgraph database backend not available (import _ \"next.orly.dev/pkg/dgraph\")")
-		}
-		return newDgraphDatabase(ctx, cancel, cfg)
 	case "neo4j":
 		// Use the neo4j implementation (HTTP-based, works in WASM)
 		if newNeo4jDatabase == nil {
@@ -80,20 +71,10 @@ func NewDatabaseWithConfig(
 		}
 		return newNeo4jDatabase(ctx, cancel, cfg)
 	default:
-		return nil, fmt.Errorf("unsupported database type: %s (supported in WASM: wasmdb, dgraph, neo4j)", dbType)
+		return nil, fmt.Errorf("unsupported database type: %s (supported in WASM: wasmdb, neo4j)", dbType)
 	}
 }
 
-// newDgraphDatabase creates a dgraph database instance
-// This is defined here to avoid import cycles
-var newDgraphDatabase func(context.Context, context.CancelFunc, *DatabaseConfig) (Database, error)
-
-// RegisterDgraphFactory registers the dgraph database factory
-// This is called from the dgraph package's init() function
-func RegisterDgraphFactory(factory func(context.Context, context.CancelFunc, *DatabaseConfig) (Database, error)) {
-	newDgraphDatabase = factory
-}
-
 // newNeo4jDatabase creates a neo4j database instance
 // This is defined here to avoid import cycles
 var newNeo4jDatabase func(context.Context, context.CancelFunc, *DatabaseConfig) (Database, error)