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/utils/sql-generator-grab-concat-str.js

@@ -1,3 +1,4 @@
+import { escapeStringLiteral, quoteIdentifier } from "./sql-identifier";
 export default function sqlGenGrabConcatStr({ alias, field, separator = ",", distinct, }) {
     let gc = `GROUP_CONCAT(`;
     if (distinct) {
@@ -5,9 +6,9 @@ export default function sqlGenGrabConcatStr({ alias, field, separator = ",", dis
     }
     gc += `${field}`;
     if (!distinct) {
-        gc += `, '${separator}'`;
+        gc += `, '${escapeStringLiteral(separator)}'`;
     }
     gc += `)`;
-    gc += ` AS ${alias}`;
+    gc += ` AS ${quoteIdentifier(alias)}`;
     return gc;
 }