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-insert-generator.js

@@ -1,6 +1,6 @@
-function quoteIdentifier(identifier) {
-    return `\`${identifier.replace(/`/g, "``")}\``;
-}
+import { quoteIdentifier } from "./sql-identifier";
+import sqlValuePlaceholder from "./sql-value-placeholder";
+import grabTableFields from "./grab-table-fields";
 /**
  * # SQL Insert Generator
  */
@@ -17,37 +17,19 @@ export default function sqlInsertGenerator({ tableName, data, dbFullName, }) {
                     }
                 });
             });
+            const fieldsMap = new Map(grabTableFields(tableName).map((f) => [f.fieldName, f]));
             let queryBatches = [];
             let queryValues = [];
             data.forEach((item) => {
                 queryBatches.push(`(${insertKeys
                     .map((ky) => {
-                    const value = item[ky];
-                    const is_embedding = Array.isArray(value) &&
-                        typeof value[0] == "number";
-                    const finalValue = typeof value == "string" ||
-                        typeof value == "number"
-                        ? value
-                        : typeof value == "function"
-                            ? value().value
-                            : is_embedding
-                                ? JSON.stringify(value)
-                                : value
-                                    ? value
-                                    : null;
-                    if (!finalValue && typeof value !== "number") {
-                        queryValues.push(null);
-                        return "?";
-                    }
-                    queryValues.push(finalValue);
-                    const placeholder = typeof value == "function"
-                        ? value().placeholder
-                        : is_embedding
-                            ? "VEC_FromText(?)"
-                            : "?";
+                    const { placeholder, value } = sqlValuePlaceholder({
+                        value: item[ky],
+                        field: fieldsMap.get(ky),
+                    });
+                    queryValues.push(value);
                     return placeholder;
                 })
-                    .filter((k) => Boolean(k))
                     .join(",")})`);
             });
             const insertColumns = insertKeys.map(quoteIdentifier).join(",");