diff --git a/packages/coding-agent/test/agent-session-python-cleanup.test.ts b/packages/coding-agent/test/agent-session-python-cleanup.test.ts
index 2818acbe3..7bb449787 100644
--- a/packages/coding-agent/test/agent-session-python-cleanup.test.ts
+++ b/packages/coding-agent/test/agent-session-python-cleanup.test.ts
@@ -724,13 +724,7 @@ describe("AgentSession python cleanup", () => {
 		expect(EvalTool).toBeDefined();
 		const disposeSession = session.dispose();
 		await expect(
-			EvalTool!.execute(
-				"call-id",
-				{ input: "```py\nprint('late')\n```" },
-				undefined,
-				undefined,
-				undefined,
-			),
+			EvalTool!.execute("call-id", { input: "```py\nprint('late')\n```" }, undefined, undefined, undefined),
 		).rejects.toThrow("Python execution is unavailable while session disposal is in progress");
 		await disposeSession;
 		expect(warmupSpy).toHaveBeenCalledTimes(1);
diff --git a/packages/coding-agent/test/core/js-executor.test.ts b/packages/coding-agent/test/core/js-executor.test.ts
index 566eb7deb..8b6ddbc73 100644
--- a/packages/coding-agent/test/core/js-executor.test.ts
+++ b/packages/coding-agent/test/core/js-executor.test.ts
@@ -198,77 +198,6 @@ describe("executeJs", () => {
 		expect(directoryResult.output).toContain("Directory paths are not supported");
 	});
 
-	it("supports parse/stringify helpers and row utilities", async () => {
-		const result = await executeJs(
-			[
-				'const csv = \'name,role,note\\nalice,admin,"hello, world"\\nbob,user,"line1\\nline2"\';',
-				"const parsed = await parse.csv(csv);",
-				"const tsv = stringify.tsv(rows.pick(parsed, ['name', 'role']));",
-				"const roundtrip = await parse.tsv(tsv);",
-				"const grouped = rows.groupBy(parsed, 'role');",
-				"const counted = rows.countBy(parsed, 'role');",
-				"const sorted = rows.sortBy(parsed, 'name', { reverse: true });",
-				"return { parsed, roundtrip, groupedSizes: Object.fromEntries(Object.entries(grouped).map(([key, value]) => [key, value.length])), counted, sorted: rows.column(sorted, 'name') };",
-			].join("\n"),
-			{
-				sessionId,
-				session,
-				sessionFile,
-			},
-		);
-
-		expect(result.exitCode).toBe(0);
-		expect(result.displayOutputs).toEqual([
-			{
-				type: "json",
-				data: {
-					parsed: [
-						{ name: "alice", role: "admin", note: "hello, world" },
-						{ name: "bob", role: "user", note: "line1\nline2" },
-					],
-					roundtrip: [
-						{ name: "alice", role: "admin" },
-						{ name: "bob", role: "user" },
-					],
-					groupedSizes: { admin: 1, user: 1 },
-					counted: { admin: 1, user: 1 },
-					sorted: ["bob", "alice"],
-				},
-			},
-		]);
-	});
-
-	it("round-trips text and binary writes", async () => {
-		const result = await executeJs(
-			[
-				"await write('plain.txt', 'hello');",
-				"await write('bin.dat', new Uint8Array([0, 1, 2, 255]));",
-				"await write.json('state.json', { ok: true });",
-				"await write.csv('table.csv', [{ name: 'alice', role: 'admin' }]);",
-				"return {",
-				"  text: await read.text('plain.txt'),",
-				"  bytes: Array.from(await read.bytes('bin.dat')),",
-				"  json: await read.json('state.json'),",
-				"  csv: await read.csv('table.csv'),",
-				"};",
-			].join("\n"),
-			{
-				sessionId,
-				session,
-				sessionFile,
-			},
-		);
-
-		expect(result.exitCode).toBe(0);
-		expect(getStatusEvents(result)).toHaveLength(8);
-		expect(getJsonData(result)).toEqual({
-			text: "hello",
-			bytes: [0, 1, 2, 255],
-			json: { ok: true },
-			csv: [{ name: "alice", role: "admin" }],
-		});
-	});
-
 	it("routes output() through tool.read and keeps tool.* results normalized", async () => {
 		const execute = vi.fn(async (_toolCallId: string, args: unknown): Promise<AgentToolResult> => {
 			const record = args as { path: string };
diff --git a/packages/coding-agent/test/core/python-prelude.test.ts b/packages/coding-agent/test/core/python-prelude.test.ts
index 302b0d201..8058af26b 100644
--- a/packages/coding-agent/test/core/python-prelude.test.ts
+++ b/packages/coding-agent/test/core/python-prelude.test.ts
@@ -40,7 +40,22 @@ const shouldRun = Boolean(pythonPath) && hasKernelDeps;
 
 describe.skipIf(!shouldRun)("PYTHON_PRELUDE integration", () => {
 	it("exposes prelude helpers via eval python backend", async () => {
-		const helpers = ["env", "read", "write", "append", "find", "glob", "grep", "rgrep", "sed", "tree", "stat", "diff", "run", "output"];
+		const helpers = [
+			"env",
+			"read",
+			"write",
+			"append",
+			"find",
+			"glob",
+			"grep",
+			"rgrep",
+			"sed",
+			"tree",
+			"stat",
+			"diff",
+			"run",
+			"output",
+		];
 
 		const session = {
 			cwd: getProjectDir(),