docs: add agent control tool guide

Adds a new docs page explaining the OpenChamber agent control tool and its capabilities.
Includes localized versions for supported languages and adds the page to the docs sidebar.
Updates the lockfile with the new better-sqlite3 dependency.

packages/docs/sidebar.config.json

@@ -154,6 +154,20 @@
             "ja": "スケジュールタスク"
           }
         },
+        {
+          "label": "Agent Control Tool",
+          "link": "/agent-control-tool/",
+          "translations": {
+            "uk": "Інструмент керування для агентів",
+            "zh-CN": "智能体控制工具",
+            "es": "Herramienta de control para agentes",
+            "pt-BR": "Ferramenta de controle para agentes",
+            "ko": "에이전트 제어 도구",
+            "pl": "Narzędzie sterowania dla agentów",
+            "fr": "Outil de contrôle pour les agents",
+            "ja": "エージェント制御ツール"
+          }
+        },
         {
           "label": "Session Goals",
           "link": "/session-goals/",