Port bun-mariadb conventions: init globals, db handler, split schema sync

- init() loads config, schema and the SQLite client once into globals
- all CRUD queries go through lib/db-handler.ts (optional per-call config)
- split db-schema-manager.ts into lib/schema/* with FK-aware table ordering
- add bun:test tests for schema ordering, FK constraints and schema sync
- config/schema files can be .ts/.js/.json/.yaml/.yml; db_schema_file_name
  is now optional (defaults to schema.* in db_dir)
- add export/import commands (database snapshot + schema archives)
- package exports map, type re-exports, hardened publish.sh
- validate table name in delete

Co-Authored-By: Claude Opus 5.5 <[email protected]>

src/index.ts

@@ -1,3 +1,4 @@
+import init from "./functions/init";
 import DbDelete from "./lib/sqlite/db-delete";
 import DbInsert from "./lib/sqlite/db-insert";
 import DbSelect from "./lib/sqlite/db-select";
@@ -6,6 +7,8 @@ import DbUpdate from "./lib/sqlite/db-update";
 import grabDbSchema from "./utils/grab-db-schema";
 import grabJoinFieldsFromQueryObject from "./utils/grab-join-fields-from-query-object";
 
+init();
+
 const BunSQLite = {
     select: DbSelect,
     insert: DbInsert,
@@ -19,3 +22,21 @@ const BunSQLite = {
 } as const;
 
 export default BunSQLite;
+
+export type * from "./types";
+export {
+    UsersOmitedFields,
+    MariaDBCollations,
+    TextFieldTypesArray,
+    BUN_SQLITE_DATATYPES,
+    ServerQueryOperators,
+    ServerQueryEqualities,
+    SQlComparisons,
+    DataCrudRequestMethods,
+    DataCrudRequestMethodsLowerCase,
+    DsqlCrudActions,
+    QueryFields,
+    DockerComposeServices,
+    IndexTypes,
+    DefaultFields,
+} from "./types";