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)

client/tests/unit/test_net_primitives.gd

@@ -2,6 +2,7 @@ extends "res://addons/gut/test.gd"
 
 const DmResponse = preload("res://scripts/net/dm_response.gd")
 const NarrateResult = preload("res://scripts/net/narrate_result.gd")
+const NpcResult = preload("res://scripts/net/npc_result.gd")
 const DmTransport = preload("res://scripts/net/dm_transport.gd")
 const ProxyConfig = preload("res://scripts/net/proxy_config.gd")
 
@@ -52,3 +53,12 @@ func test_proxy_config_override():
 	ProjectSettings.set_setting(ProxyConfig.SETTING, "http://example.test:9000")
 	assert_eq(ProxyConfig.base_url(), "http://example.test:9000")
 	ProjectSettings.set_setting(ProxyConfig.SETTING, null)
+
+
+func test_npc_result_fallback_is_degraded_with_no_moves():
+	var r = NpcResult.fallback("The figure says nothing.")
+	assert_true(r.degraded)
+	assert_eq(r.display_text, "The figure says nothing.")
+	assert_eq(r.valid_moves, [])
+	assert_eq(r.facts, [])
+	assert_false(r.ends_conversation)