fix: align README type docs with actual exports

- Remove non-existent types from README (SQLFragment, DDLFragment, DBExpression)
- Add SQLTemplate as the actual fragment type
- Export missing types from zen.ts (PartialTable, DerivedTable, SetValues,
  FieldDBMeta, ReferenceInfo, CompoundReference, TaggedQuery, SQLDialect, isTable)
- Reorganize zen.ts exports into logical groups

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <[email protected]>

Author: brainkim

README.md

@@ -980,19 +980,15 @@ import type {
 
   // Fragment types
   SetValues,          // Values accepted by Table.set()
-  SQLFragment,        // SQL fragment object
-  DDLFragment,        // DDL fragment object
+  SQLTemplate,        // SQL template object (return type of set(), on(), etc.)
   SQLDialect,         // "sqlite" | "postgresql" | "mysql"
 
   // Driver types
   Driver,             // Driver interface for adapters
   TaggedQuery,        // Tagged template query function
 
-  // Expression types
-  DBExpression,       // Runtime database expression
-
   // Error types
-  DatabaseErrorCode,    // Error code string literals
+  DatabaseErrorCode,  // Error code string literals
 } from "@b9g/zen";
 ```
 

src/zen.ts

@@ -18,20 +18,43 @@ export {zod as z};
 // ============================================================================
 
 export {
+	// Functions
 	table,
 	view,
+	extendZod,
+
+	// Type guards
+	isTable,
+	isView,
+
+	// View helpers
+	getViewMeta,
+
+	// Table types
 	type Table,
+	type PartialTable,
+	type DerivedTable,
 	type View,
 	type Queryable,
 	type TableOptions,
+
+	// Row types
 	type Row,
 	type Insert,
 	type Update,
+	type SetValues,
+
+	// Field types
 	type FieldMeta,
 	type FieldType,
+	type FieldDBMeta,
+
+	// Reference types
 	type Relation,
-	isView,
-	getViewMeta,
+	type ReferenceInfo,
+	type CompoundReference,
+
+	// View types
 	type ViewMeta,
 } from "./impl/table.js";
 
@@ -40,64 +63,75 @@ export {
 // ============================================================================
 
 export {
+	// Classes
 	Database,
 	Transaction,
 	DatabaseUpgradeEvent,
+
+	// Types
 	type Driver,
+	type TaggedQuery,
+	type EnsureResult,
 } from "./impl/database.js";
 
 // ============================================================================
-// SQL Primitives (for drivers and custom queries)
+// SQL Primitives
 // ============================================================================
 
 export {
-	// SQL builtins - SQL-native values with no JS equivalent
+	// SQL builtins (for .db.inserted() / .db.updated())
+	NOW,
+	TODAY,
 	CURRENT_TIMESTAMP,
 	CURRENT_DATE,
 	CURRENT_TIME,
-	NOW,
-	TODAY,
 	isSQLBuiltin,
 } from "./impl/database.js";
 
 export {
 	// SQL identifiers
 	ident,
 	isSQLIdentifier,
-} from "./impl/template.js";
 
-export {
-	// SQL template (return type of table methods like deleted(), set(), etc.)
+	// SQL templates
 	type SQLTemplate,
 	isSQLTemplate,
 } from "./impl/template.js";
 
-export {
-	// Schema ensure result
-	type EnsureResult,
-} from "./impl/database.js";
+export {type SQLDialect} from "./impl/sql.js";
 
 // ============================================================================
 // Errors
 // ============================================================================
 
 export {
+	// Base error
 	DatabaseError,
+	isDatabaseError,
+	hasErrorCode,
+
+	// Validation errors
 	ValidationError,
 	TableDefinitionError,
-	MigrationError,
-	MigrationLockError,
+
+	// Query errors
 	QueryError,
 	NotFoundError,
 	AlreadyExistsError,
 	ConstraintViolationError,
-	ConnectionError,
-	TransactionError,
+
+	// Migration errors
+	MigrationError,
+	MigrationLockError,
 	EnsureError,
 	SchemaDriftError,
 	ConstraintPreflightError,
-	isDatabaseError,
-	hasErrorCode,
+
+	// Connection errors
+	ConnectionError,
+	TransactionError,
+
+	// Error types
 	type DatabaseErrorCode,
 	type EnsureOperation,
 } from "./impl/errors.js";