Update workspace path

Change-Id: Idf4c2a78b2e1cab9af56a763f20728e337245e45
diff --git a/server/config.yaml b/server/config.yaml
index cc65043..804ea2c 100644
--- a/server/config.yaml
+++ b/server/config.yaml
@@ -15,6 +15,7 @@
   repo_path: "/Users/shota/github/staff/"
   branch_prefix: "task/"
   commit_message_template: "Task {task_id}: {task_title} by {agent_name}"
+  workspace_path: "/Users/shota/staff/workspace"
   pr_template: |
     ## Task: {task_title}