feat(client): NpcResult model

client/scripts/net/npc_result.gd

@@ -0,0 +1,27 @@
+# client/scripts/net/npc_result.gd
+class_name NpcResult
+extends RefCounted
+## The game-meaningful result of one /npc/speak call. The caller applies
+## valid_moves (via MoveApplier) and harvests facts — state writes stay explicit
+## (§2). dropped_moves are kept only so the caller can log the §6 drops.
+
+var display_text: String
+var facts: Array
+var valid_moves: Array
+var dropped_moves: Array
+var ends_conversation: bool
+var degraded: bool
+
+
+func _init(p_display_text := "", p_facts := [], p_valid := [], p_dropped := [],
+		p_ends := false, p_degraded := false) -> void:
+	display_text = p_display_text
+	facts = p_facts
+	valid_moves = p_valid
+	dropped_moves = p_dropped
+	ends_conversation = p_ends
+	degraded = p_degraded
+
+
+static func fallback(line: String) -> NpcResult:
+	return NpcResult.new(line, [], [], [], false, true)