chore: normalize formatting (2-space → tabs) in stream-error-patterns files

Re-tab only — no logic changes. Follows the repo's tab-based formatting
for these files, matching the CommandCode executor/translator style.

Co-authored-by: CommandCodeBot <noreply@commandcode.ai>

tests/unit/commandcode-executor.test.js

@@ -115,7 +115,10 @@ describe("commandcode executor — early-error peek", () => {
 				c.close();
 			},
 		});
-		const res = await peekForUpstreamError(new Response(body, { status: 200 }), "m");
+		const res = await peekForUpstreamError(
+			new Response(body, { status: 200 }),
+			"m",
+		);
 		const text = await res.text();
 		expect(text).toContain("café");
 		expect(text).not.toContain("\uFFFD");