feat(coding-agent): add automatic theme mode (#5874)

packages/tui/test/terminal-colors.test.ts

@@ -1,6 +1,12 @@
 import assert from "node:assert";
 import { describe, it } from "node:test";
-import { type Component, parseOsc11BackgroundColor, type Terminal, TUI } from "../src/index.ts";
+import {
+	type Component,
+	parseOsc11BackgroundColor,
+	parseTerminalColorSchemeReport,
+	type Terminal,
+	TUI,
+} from "../src/index.ts";
 
 class TestTerminal implements Terminal {
 	private inputHandler?: (data: string) => void;
@@ -104,6 +110,16 @@ describe("parseOsc11BackgroundColor", () => {
 	});
 });
 
+describe("parseTerminalColorSchemeReport", () => {
+	it("parses color scheme reports", () => {
+		assert.strictEqual(parseTerminalColorSchemeReport("\x1b[?997;1n"), "dark");
+		assert.strictEqual(parseTerminalColorSchemeReport("\x1b[?997;2n"), "light");
+		assert.strictEqual(parseTerminalColorSchemeReport("\x1b[?997;3n"), undefined);
+		assert.strictEqual(parseTerminalColorSchemeReport("\x1b[?996n"), undefined);
+		assert.strictEqual(parseTerminalColorSchemeReport("x\x1b[?997;1n"), undefined);
+	});
+});
+
 describe("TUI.queryTerminalBackgroundColor", () => {
 	it("writes OSC 11 query and resolves with the parsed RGB reply", async () => {
 		const terminal = new TestTerminal();