Replace say->narrate in look script handlers

Refactor all look script handlers to use ScriptBuilder.narrate() instead
of ScriptBuilder.say() for better semantic clarity. Look commands
describe what the player sees, so narrate is more appropriate than say.

Files changed:
- kq4_009_shady_wooded_area.gd (1 instance)
- kq4_010_forest_path.gd (3 instances)
- kq4_011_enchanted_grove.gd (2 instances)
- kq4_015_frog_pond.gd (4 instances)
- kq4_018_cemetery.gd (2 instances)
- kq4_023_forest_path_with_cottage.gd (2 instances)
- kq4_026_river_meadow.gd (1 instance)
- kq4_039_island_beach.gd (2 instances)
- kq4_040_island_beach_east.gd (2 instances)

Total: 19 instances across 9 files

scenes/kq4_026_river_meadow/kq4_026_river_meadow.gd

@@ -19,5 +19,5 @@ func _on_forest_path_interacted() -> void:
 
 func _on_room_looked() -> void:
 	start_main_script(ScriptBuilder.init(
-		ScriptBuilder.say(ego, "A cold river carves its way through this lush flowery meadow.")
+		ScriptBuilder.narrate("A cold river carves its way through this lush flowery meadow.")
 	).build(self, "_on_script_complete"))