A notice's word under the pointer is lit, in its band and the grid; mark_hover is gone

Open point 6 of docs/render-pipeline.md: notice words are Look and Exec
targets, so the hover affordance headers have is back on notices, painted
once in the notice's layer and joined into the grid from it. Deleted:
Surface.mark_hover, Cell.hover and render's per-frame reset of it, none of
which had been set since stage 5 (macOS loses its glass hover rect; its
build is ignored for now). Snapshot goldens unchanged.

Shared files touched: macos.zig (the hover bit's removal). Not touched:
pardes.zig, Messages.zig, mouse.zig, gui.zig, detached/*.

1 files changed, 5 insertions, 13 deletions

diff --git a/src/macos.zig b/src/macos.zig
index f7e03cd4..4d8f2883 100644
--- a/src/macos.zig
+++ b/src/macos.zig
@@ -1866,13 +1866,10 @@ fn blankTagCells(cells: []Cell, cols: u16, rows: u16, source: []const pardes.Cel
         if (layer.rows == 0 or layer.viewport.y >= rows or layer.viewport.x >= cols) continue;
         const start = @as(usize, layer.viewport.y) * cols + layer.viewport.x;
         const count = @min(layer.viewport.w, cols - layer.viewport.x);
-        for (cells[start..][0..count], source[start..][0..count]) |*cell, was| {
-            // The tag text is the layer's to draw, but a look-hover on a tag
-            // word is a canonical fact: carry the hover bit through so the
-            // glass overlay still finds the affordance rect.
-            cell.* = encodeCell(.{});
-            cell.flags |= @as(u8, @intFromBool(was.hover)) * cell_flag_hover;
-        }
+        // The tag text is the layer's to draw. (The look-hover's glass
+        // rect went with the core's hover bit, stage 8's follow-up.)
+        _ = source;
+        for (cells[start..][0..count]) |*cell| cell.* = encodeCell(.{});
     }
 }
 
@@ -2574,7 +2571,7 @@ fn encodeCell(cell: pardes.Cell) Cell {
         .fg = encodeColor(cell.style.fg),
         .bg = encodeColor(cell.style.bg),
         .attrs = encodeAttrs(cell.style),
-        .flags = encodeCellFlags(cell.default, cell.style.font_role, cell.hover),
+        .flags = encodeCellFlags(cell.default, cell.style.font_role, false),
         .len = if (cell.default) 1 else cell.len,
     };
     if (cell.default)
@@ -3131,16 +3128,11 @@ test "mac tag layer ABI preserves logical capacity and physical grip" {
     try std.testing.expectEqual(@as(u32, 11), pardes_tag_layer_value(0, 8));
     try std.testing.expectEqual(@as(u8, 'Z'), pardes_tag_layer_cells(0).?[11].text[0]);
     var canonical: [24]Cell = @splat(encodeCell(.{ .text = .{'G'} ++ .{0} ** 6, .len = 1, .default = false }));
-    // A look-hover under the layer is a canonical fact and survives the blank;
-    // the glyph it marks does not, because the layer redraws that text itself.
     var source: [24]pardes.Cell = @splat(.{});
-    source[11].hover = true;
     blankTagCells(&canonical, 8, 3, &source, &core.surface.tag_layers);
     try std.testing.expectEqual(@as(u8, 'G'), canonical[9].text[0]);
     try std.testing.expectEqual(@as(u8, 'G'), canonical[18].text[0]);
     try std.testing.expectEqual(encodeCell(.{}).len, canonical[10].len);
-    try std.testing.expectEqual(@as(u8, 0), canonical[10].flags & cell_flag_hover);
-    try std.testing.expectEqual(cell_flag_hover, canonical[11].flags & cell_flag_hover);
 }
 
 test "mac window blur builtin reaches the ABI without changing opacity" {