diff --git a/src/game/engine/src/modules/management/turn_processor.gd b/src/game/engine/src/modules/management/turn_processor.gd
index bbde5e02..d072f6ec 100644
--- a/src/game/engine/src/modules/management/turn_processor.gd
+++ b/src/game/engine/src/modules/management/turn_processor.gd
@@ -151,6 +151,8 @@ func _process_research(player: RefCounted) -> void:  # Player
 	# Effective per-yield mult composes static difficulty handicap +
 	# linear-per-turn growth (warcouncil p1-29 H4, 2026-04-27). Per-player
 	# overrides for batch testing still take precedence inside the helper.
+	# Full Rail-1 port to GdTechWeb::process_research is queued under p1-31 —
+	# requires wrapper-layer plumbing (tech_web.gd → KnowledgeWebScript → GdTechWeb).
 	var sci_modifier: float = GameState.get_effective_yield_mult(player, "research")
 
 	player.research_progress += int(player.science_per_turn * sci_modifier)