chore: quantlab-agent 프로젝트 초기 설정

agent_guide 템플릿 기반으로 프로젝트 구조 설정.
Gitea(quantlab-agent), Vikunja(project #15) 연동 완료.

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

.agent/settings.json

@@ -0,0 +1,38 @@
+{
+  "hooks": {
+    "SessionStart": [
+      {
+        "hooks": [
+          {
+            "type": "command",
+            "command": "node .agent/hooks/gsd-check-update.js"
+          }
+        ]
+      }
+    ],
+    "AfterTool": [
+      {
+        "matcher": "Bash|Edit|Write|MultiEdit|Agent|Task",
+        "hooks": [
+          {
+            "type": "command",
+            "command": "node .agent/hooks/gsd-context-monitor.js",
+            "timeout": 10
+          }
+        ]
+      }
+    ],
+    "BeforeTool": [
+      {
+        "matcher": "Write|Edit",
+        "hooks": [
+          {
+            "type": "command",
+            "command": "node .agent/hooks/gsd-prompt-guard.js",
+            "timeout": 5
+          }
+        ]
+      }
+    ]
+  }
+}