feat(i18n): add Chinese translations for all 14 hands

Add [i18n.zh] sections with localized name and description to every
HAND.toml in the registry.

hands/collector/HAND.toml

@@ -2,6 +2,11 @@ id = "collector"
 version = "1.0.0"
 name = "Collector Hand"
 description = "Autonomous intelligence collector — monitors any target continuously with change detection and knowledge graphs"
+
+[i18n.zh]
+name = "情报采集 Hand"
+description = "自主情报采集智能体——持续监控目标，支持变更检测和知识图谱"
+
 category = "data"
 icon = "🔍"