test(nodejs): cover camelCase column names across table surfaces

References #3211.

The core `col()` camelCase integration coverage requested by #3211 is already on `main` from #4493. This PR adds the adjacent raw-SQL table-surface regressions that were previously uncovered:

- unquoted `where("camelCase = 1")`
- `update` and `delete` with unquoted camelCase predicates
- `mergeInsert` with a camelCase join key, including matched-update and not-matched-insert input
- `addColumns` `valueSql` referencing a camelCase column
- `createIndex` on a camelCase column

These are characterization tests for the existing local-backend behavior. They do not add `col()` coverage or require a live remote service.

nodejs/__test__/table.test.ts

@@ -4973,6 +4973,44 @@ describe("column name options", () => {
     expect(results[0].camelCase).toBe(1);
   });
 
+  test("can filter on an unquoted camelCase column", async () => {
+    const results = await table.query().where("camelCase = 1").toArray();
+    expect(results[0].camelCase).toBe(1);
+  });
+
+  test("can update and delete by camelCase column", async () => {
+    await table.update({ where: "camelCase = 1", values: { camelCase: 2 } });
+    expect(await table.query().where("camelCase = 2").toArray()).toHaveLength(
+      1,
+    );
+    await table.delete("camelCase = 2");
+    expect(await table.countRows()).toBe(0);
+  });
+
+  test("can mergeInsert on a camelCase join key", async () => {
+    await table
+      .mergeInsert("camelCase")
+      .whenMatchedUpdateAll()
+      .whenNotMatchedInsertAll()
+      .execute([
+        { camelCase: 1, vector: [0.3, 0.4] },
+        { camelCase: 5, vector: [0.5, 0.6] },
+      ]);
+    expect(await table.countRows()).toBe(2);
+    const inserted = await table.query().where("camelCase = 5").toArray();
+    expect(inserted).toHaveLength(1);
+  });
+
+  test("can reference a camelCase column in addColumns sql", async () => {
+    await table.addColumns([{ name: "doubled", valueSql: "camelCase * 2" }]);
+    const results = await table.query().select(["doubled"]).toArray();
+    expect(results[0].doubled).toBe(2);
+  });
+
+  test("can createIndex on a camelCase column", async () => {
+    await table.createIndex("camelCase");
+  });
+
   test("can make multiple vector queries in one go", async () => {
     const results = await table
       .query()