diff --git a/init.lua b/init.lua
index 94f30bb..0f159c1 100644
--- a/init.lua
+++ b/init.lua
@@ -343,7 +343,6 @@ local ui = (function()
         -- Background
         engine.render.draw_rect(chip.x, chip.y, chip.w, chip.h, bg_color)
         -- Border (active only)
-        -- NOTE: engine.render.draw_rect_lines does not exist yet (needs engine-binding-task)
         if is_active then
             engine.render.draw_rect_lines(chip.x, chip.y, chip.w, chip.h, rgba(COLOR_CHIP_BORDER, 0xFF))
         end
@@ -352,7 +351,6 @@ local ui = (function()
         local text_y = chip.y + (chip.h / 2) - 8
         engine.render.draw_text(chip.label, text_x, text_y, 14, text_color)
         -- Hidden overlay (strikethrough for invisible layers)
-        -- NOTE: engine.render.draw_line does not exist yet (needs engine-binding-task)
         if not chip.is_roof and not state.is_layer_visible(chip.name) then
             engine.render.draw_line(chip.x, chip.y, chip.x + chip.w, chip.y + chip.h,
                         rgba(COLOR_STRIKE, 0xFF), 2)
@@ -361,7 +359,6 @@ local ui = (function()
         if chip.divider_after then
             local dy = chip.y + chip.h + (chip.gap_after / 2)
             -- Dashed: 4 short segments
-            -- NOTE: engine.render.draw_line does not exist yet (needs engine-binding-task)
             for seg = 0, 3 do
                 local sx = chip.x + seg * 9
                 engine.render.draw_line(sx, dy, sx + 6, dy, rgba(COLOR_DIVIDER, 0xFF), 1)
@@ -392,7 +389,6 @@ local ui = (function()
     local function draw_picker(mx, my)
         local p = picker_layout()
         engine.render.draw_rect(p.x, p.y, p.w, p.h, rgba(COLOR_PICKER_BG, 0xE0))
-        -- NOTE: engine.render.draw_rect_lines does not exist yet (needs engine-binding-task)
         engine.render.draw_rect_lines(p.x, p.y, p.w, p.h, rgba(0xFFFFFF, 0xFF))
 
         if not state.is_picker_open() then
@@ -435,7 +431,6 @@ local ui = (function()
             local ty = grid_y + row * (TILE_THUMB_SIZE + 4)
             draw_tile_thumb(active_atlas, tid, tx, ty, TILE_THUMB_SIZE)
             if tid == state.get_active_tile() then
-                -- NOTE: engine.render.draw_rect_lines does not exist yet (needs engine-binding-task)
                 engine.render.draw_rect_lines(tx, ty, TILE_THUMB_SIZE, TILE_THUMB_SIZE,
                                   rgba(0xFFFF00, 0xFF))
             end
@@ -445,7 +440,6 @@ local ui = (function()
     local function draw_status(mx, my)
         local s = status_layout()
         engine.render.draw_rect(s.x, s.y, s.w, s.h, rgba(COLOR_STATUS_BG, 0xC0))
-        -- NOTE: engine.render.draw_rect_lines does not exist yet (needs engine-binding-task)
         engine.render.draw_rect_lines(s.x, s.y, s.w, s.h, rgba(0xFFFFFF, 0xFF))
         local cell = state.get_mouse_cell()
         local cell_str