fix(tui): hide the overlay select marker and scroll indicator

src/tui/overlay-paint.test.ts

@@ -117,17 +117,15 @@ describe("overlay host never shares cells with the prompt border", () => {
         size,
       );
 
-      const expected = [
-        ` ▶ ${ITEMS[0]}`,
-        ...ITEMS.slice(1).map((i) => `   ${i}`),
-      ];
+      // Selection is text color only: no marker column, so each row is the label.
+      const expected = ITEMS.map((i) => ` ${i}`);
       // Row 0 is the title/how-to line: the supplied title must show; its
       // exact hint wording is not part of this contract.
       expect(interior[0]).toContain("model");
       expectCleanInterior(interior.slice(1), expected);
 
       // The selected row must be intact, not overwritten by the model label.
-      expect(interior).toContain(` ▶ ${ITEMS[0]}`);
+      expect(interior).toContain(` ${ITEMS[0]}`);
       for (const row of interior) {
         expect(row.includes(MODEL_LABEL)).toBe(false);
         expect(row.includes("alice")).toBe(false);

src/tui/overlay-view.ts

@@ -368,6 +368,7 @@ export function createOverlayView(ctx: RenderContext) {
     );
     list.setHeight(list.height, 1);
     list.select.showSelectionIndicator = false;
+    list.select.showScrollIndicator = false;
     list.select.options = lines.map((line) => ({
       name: line,
       description: "",
@@ -444,7 +445,8 @@ export function createOverlayView(ctx: RenderContext) {
     // nothing wraps, nothing clips. A cramped host may already have dropped
     // that air.
     list.setHeight(list.height, list.rowsPerItem);
-    list.select.showSelectionIndicator = true;
+    list.select.showSelectionIndicator = false;
+    list.select.showScrollIndicator = false;
     list.select.options = presentation.items.map((label, i) => {
       const id = presentation.itemIds?.[i];
       return id === undefined

src/tui/shell/overlay-list.ts

@@ -171,7 +171,9 @@ export function createOverlayList(
       width: "100%",
       flexShrink: 0,
       showDescription: shape.rowsPerItem > 1,
-      showSelectionIndicator: true,
+      showSelectionIndicator: false,
+      showScrollIndicator: false,
+      wrapSelection: false,
       itemSpacing: 0,
       // Selection is a text colour, not a filled band: the highlighted row
       // already stands out, and a block would fight the host's background.