Add queue tables, quote SQL identifiers (v1.3.0)

- isQueue table option adds queue columns and a (status, available_at)
  index; BunSQLite.queue exposes add, claim, complete, fail and
  release_stale with atomic claims
- Set busy_timeout on connections so workers in separate processes wait
  instead of failing with SQLITE_BUSY
- Quote table and column names with backticks in generated SQL, so
  reserved words (to, order, group) work and unknown columns error
  instead of matching as string literals
- Tests for queue ops, multi-process claims and reserved-word names

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

dist/utils/sql-safe.d.ts

@@ -11,6 +11,19 @@ export declare function sqlIdent(name: unknown, label?: string): string;
  * @description Accepts `field`, `table.field` or `table.*`
  */
 export declare function sqlField(name: unknown, label?: string): string;
+/**
+ * # Validate and quote an identifier for queries
+ * @description Quoting lets reserved words (`to`, `order`, ...) be used as
+ * names. Backticks, not double quotes: SQLite reads an unknown `"name"` as
+ * a string literal, so a typo would silently match nothing instead of
+ * failing with "no such column".
+ */
+export declare function sqlName(name: unknown, label?: string): string;
+/**
+ * # Validate and quote a column reference
+ * @description Accepts `field`, `table.field` or `table.*`
+ */
+export declare function sqlColumn(name: unknown, label?: string): string;
 /**
  * # Quote an identifier for DDL statements
  */