fix(speed): accept a trailing × or x in the custom speed field

src/components/ai-edition/v4/SpeedControl.test.tsx

@@ -40,6 +40,14 @@ describe("SpeedControl", () => {
 		expect(updateSpeedValue).toHaveBeenCalledWith("sp1", 12);
 	});
 
+	it("commits a speed typed with a multiplier suffix, like the zoom field", () => {
+		const { updateSpeedValue, field } = renderControl(2);
+		fireEvent.change(field, { target: { value: "1,25×" } });
+		fireEvent.blur(field);
+		expect(updateSpeedValue).toHaveBeenCalledWith("sp1", 1.25);
+		expect(field).toHaveValue("");
+	});
+
 	it("commits on Enter as well as on blur, and only once", () => {
 		const { updateSpeedValue, field } = renderControl(1);
 		fireEvent.change(field, { target: { value: "7.5" } });

src/components/video-editor/customPlaybackSpeed.test.ts

@@ -44,6 +44,36 @@ describe("parseCustomPlaybackSpeedInput", () => {
 		});
 	});
 
+	it.each([
+		"1.25x",
+		"1.25×",
+		"1.25X",
+		"1,25×",
+		"1.25 x",
+		" 1.25x ",
+	])("accepts a trailing multiplier suffix: %j", (draft) => {
+		// The field shows "2×"; zoom accepts the same suffix.
+		expect(parseCustomPlaybackSpeedInput(draft)).toEqual({
+			status: "valid",
+			draft,
+			speed: 1.25,
+		});
+	});
+
+	it.each(["1.25xx", "x1.25", "1x2"])("rejects a misplaced or repeated suffix: %j", (draft) => {
+		expect(parseCustomPlaybackSpeedInput(draft)).toEqual({ status: "empty", draft });
+	});
+
+	it.each(["", "   ", "x", "×"])("treats a blank or bare-suffix draft as empty: %j", (draft) => {
+		// Stripping the suffix leaves "", and Number("") is 0, which would read as too-slow.
+		expect(parseCustomPlaybackSpeedInput(draft)).toEqual({ status: "empty", draft });
+	});
+
+	it("still applies the editor bounds to a suffixed speed", () => {
+		expect(parseCustomPlaybackSpeedInput("16.1x")).toEqual({ status: "too-fast", draft: "16.1x" });
+		expect(parseCustomPlaybackSpeedInput("0.2×")).toEqual({ status: "too-slow", draft: "0.2×" });
+	});
+
 	it("accepts the maximum editor speed, the preview's own ceiling", () => {
 		expect(parseCustomPlaybackSpeedInput("16")).toEqual({
 			status: "valid",

src/components/video-editor/customPlaybackSpeed.ts

@@ -12,7 +12,17 @@ export type CustomPlaybackSpeedInputResult =
 	| { status: "valid"; draft: string; speed: PlaybackSpeed };
 
 export function parseCustomPlaybackSpeedInput(draft: string): CustomPlaybackSpeedInputResult {
-	const normalized = Number(draft.replace(/,/g, "."));
+	// The field's placeholder reads "2×", so a typed "1.25x" or "1.25×" is a speed, not noise.
+	// Same trailing suffix the zoom field accepts (`ZoomLevelControl`).
+	const sanitized = draft
+		.trim()
+		.replace(/,/g, ".")
+		.replace(/\s*[×x]$/i, "");
+	// Number("") is 0, which would report a blank draft, or a bare "x", as too-slow.
+	if (sanitized === "") {
+		return { status: "empty", draft };
+	}
+	const normalized = Number(sanitized);
 
 	if (!Number.isFinite(normalized)) {
 		return { status: "empty", draft };