feat(client): net primitives — DmResponse, NarrateResult, DmTransport, ProxyConfig

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

client/scripts/net/narrate_result.gd

@@ -0,0 +1,18 @@
+class_name NarrateResult
+extends RefCounted
+## The game-meaningful result of one narrate call. `facts` are the [FACT:]
+## strings the caller applies to the canon log; empty when degraded.
+
+var display_text: String
+var facts: Array
+var degraded: bool
+
+
+func _init(p_display_text := "", p_facts := [], p_degraded := false) -> void:
+	display_text = p_display_text
+	facts = p_facts
+	degraded = p_degraded
+
+
+static func fallback(line: String) -> NarrateResult:
+	return NarrateResult.new(line, [], true)