Add tests, schema sync safeguards, and query/handler improvements

- Add bun test suite: SQL generator and value unit tests, plus MariaDB
  integration tests gated on BUN_MARIADB_TEST_DB
- schema: add --dry-run and require confirmation (or --yes) before
  dropping tables/columns; block unapproved destructive statements
- Always AND targetId with the query, regardless of searchOperator
- Initialize lazily on first call; init throws instead of exiting
- Generate IN (?, ?, ...) lists for IN / NOT IN
- Share value binding between insert and update (booleans, embeddings,
  function values, "" -> NULL for non-text columns)
- Keep Buffers and convert BigInt/Date without a JSON round-trip
- DbSQL: report success for empty SELECT results
- Run update() in a transaction with row locking
- Key the client cache on the full connection config
- Consolidate identifier quoting, drop dead code, merge column lookup
- Read CLI version from package.json, pin @types/bun, chmod CLI on compile
- Rebuild dist

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

dist/lib/db-handler.d.ts

@@ -1,9 +1,20 @@
 import type { BunMariaDBConfig, DBResponseObject } from "../types";
+/** Anything that can run a raw query: a client or a transaction handle */
+export type DBQueryRunner = {
+    unsafe: (query: string, values?: any[]) => Promise<any>;
+};
 type Param = {
     query: string;
     values?: any[];
     config?: BunMariaDBConfig;
+    /** Run on this client / transaction instead of the shared client */
+    client?: DBQueryRunner;
 };
+/**
+ * Resolve a shared MariaDB client. Prefer the global client so schema sync
+ * and CRUD do not open a new connection per query.
+ */
+export declare function resolveClient(config?: BunMariaDBConfig): Bun.SQL | undefined;
 /**
  * # Main DB Handler Function
  */
@@ -11,5 +22,5 @@ export default function dbHandler<T extends {
     [k: string]: any;
 } = {
     [k: string]: any;
-}>({ query, values, config }: Param): Promise<DBResponseObject<T>>;
+}>({ query, values, config, client }: Param): Promise<DBResponseObject<T>>;
 export {};