fix(client): address PR #86 review — archetype validation, teleport clear, ticker layout

- protocol.gd: replace capitalize() with explicit match for archetype
  string mapping, push_error on unknown input with Detective fallback
- main.gd: clear _known_triangle_ids in _teleport_transition() alongside
  _known_recognition_ids so chime re-fires after room change
- news_ticker.gd: defer get_minimum_size() via call_deferred to run
  after layout pass, fixing first-frame scroll distance
- 3 new tests: unknown archetype fallback, triangle dedup per-id,
  independent triangle ID firing

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

client/scripts/main.gd

@@ -575,6 +575,7 @@ func _teleport_transition() -> void:
 	GameState.current_dialogue = null
 	GameState.dialogue_active = false
 	_known_recognition_ids.clear()  # D-067: reset chimes for new room
+	_known_triangle_ids.clear()     # #590: reset activation chimes for new room
 	if dialogue_box and dialogue_box.is_dialogue_active():
 		dialogue_box.hide_dialogue()
 

client/scripts/protocol/protocol.gd

@@ -258,6 +258,9 @@ static func decode_snapshot(bytes: PackedByteArray) -> Variant:
 
 	# v19: triangle_crisis_events (#590, D-072/D-089) — one-shot activation events.
 	# Each entry: {triangle_id: int}. Client deduplicates by triangle_id across ticks.
+	# v0.1 intentional omissions: role_assignments, trigger_npc_id, tick are not decoded
+	# here — the client has no use for them in v0.1 (no overlay, no entity targeting).
+	# Add when #593+ requires richer client-side event handling.
 	var triangle_crisis_events: Array = []
 	var raw_tce: Variant = raw.get("triangle_crisis_events")
 	if raw_tce is Array:
@@ -470,7 +473,17 @@ static func _decode_enum_variant(raw) -> Dictionary:
 ## character_archetype: "detective" → "Detective", "smuggler" → "Smuggler" (server enum variant).
 static func encode_startup_message(world_seed: int, character_archetype: String = "detective") -> PackedByteArray:
 	# Map client lowercase archetype string to server PascalCase enum variant.
-	var archetype_variant: String = character_archetype.capitalize()
+	# Explicit match prevents unknown strings silently reaching the server as
+	# garbage enum values — fail loudly and fall back to "Detective".
+	var archetype_variant: String
+	match character_archetype:
+		"detective":
+			archetype_variant = "Detective"
+		"smuggler":
+			archetype_variant = "Smuggler"
+		_:
+			push_error("Protocol: unknown character_archetype '%s' — defaulting to 'Detective'" % character_archetype)
+			archetype_variant = "Detective"
 	var msg := {
 		"world_seed": world_seed,
 		"character_archetype": archetype_variant,