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/mariadb/db-sql.js

@@ -1,11 +1,12 @@
 import dbHandler from "../db-handler";
-export default async function DbSQL({ sql, values }) {
+export default async function DbSQL({ sql, values, config }) {
     try {
         const trimmedSql = sql.trim();
         const isSelect = trimmedSql.match(/^select/i);
         const res = await dbHandler({
             query: trimmedSql,
             values: values,
+            config,
         });
         if (!res.success) {
             return {
@@ -23,12 +24,9 @@ export default async function DbSQL({ sql, values }) {
         }
         const payload = isSelect ? (res.payload || []) : undefined;
         const single_res = isSelect ? payload?.[0] : res.single_res;
-        const singleRaw = res.single_res;
         return {
             ...res,
-            success: isSelect
-                ? Boolean(single_res) || Boolean(payload?.[0])
-                : true,
+            success: true,
             payload,
             single_res,
             debug: {