Consolidate agent harness course into 19 lessons

web/src/data/annotations/s15.json

@@ -18,15 +18,15 @@
     {
       "id": "runtime-owned-delivery",
       "title": "Message Delivery Belongs to the Runtime",
-      "description": "MessageBus stores each handoff in JSONL, while the runtime watches the Lead mailbox and injects new team events into the next turn. The model does not need an inbox polling tool.",
+      "description": "The MessageBus persists each handoff, while the runtime watches the Lead mailbox and injects new team events into the next turn. The model does not spend turns polling an inbox.",
       "alternatives": "A model-visible check_inbox tool is easy to add, but wastes turns and can leave completed work unnoticed.",
       "zh": {
         "title": "消息投递由运行时负责",
-        "description": "MessageBus 把每次交接写入 JSONL，运行时监听 Lead 邮箱，并把新的团队事件送入下一轮上下文。模型不需要调用邮箱轮询工具。"
+        "description": "MessageBus 持久化每次交接，运行时监听 Lead 邮箱，并把新的团队事件送入下一轮上下文。模型不需要浪费轮次轮询收件箱。"
       },
       "ja": {
         "title": "メッセージ配信はランタイムが担う",
-        "description": "MessageBus は各ハンドオフを JSONL に保存し、ランタイムが Lead のメールボックスを監視して新しい team event を次の turn に注入する。モデルに受信箱確認ツールは要らない。"
+        "description": "MessageBus が各ハンドオフを永続化し、ランタイムが Lead の受信箱を監視して新しい team event を次の turn に注入する。モデルは受信箱のポーリングに turn を費やさない。"
       }
     },
     {
@@ -46,15 +46,57 @@
     {
       "id": "plan-approval-is-a-gate",
       "title": "Plan Approval Is an Execution Gate",
-      "description": "When the Lead requests a plan, mutating tools remain blocked until the matching plan is approved. Rejection requires a new submission, and an idle teammate remains available for later assignments until a typed shutdown completes.",
-      "alternatives": "Treating approval as a conversational suggestion cannot prevent an early write or shell command.",
+      "description": "When the Lead requests a plan, mutating tools remain blocked until the matching plan is approved. Rejection requires a new submission rather than a conversational workaround.",
+      "alternatives": "Treating approval as a suggestion cannot prevent an early write or shell command.",
       "zh": {
         "title": "计划审批是执行闸门",
-        "description": "Lead 请求计划后，修改类工具会保持阻塞，直到对应计划通过。被拒绝的计划必须重新提交；空闲队友会继续保留，直到类型化关机协议完成。"
+        "description": "Lead 请求计划后，修改类工具会保持阻塞，直到对应计划通过。被拒绝的计划必须重新提交，不能靠对话绕过。"
       },
       "ja": {
         "title": "プラン承認を実行ゲートにする",
-        "description": "Lead がプランを要求すると、対応するプランが承認されるまで変更系ツールをブロックする。却下後は再提出が必要で、待機中のチームメイトは型付き終了プロトコルが完了するまで残る。"
+        "description": "Lead がプランを要求すると、対応するプランが承認されるまで変更系ツールをブロックする。却下後は会話で迂回せず再提出が必要になる。"
+      }
+    },
+    {
+      "id": "idle-claim-is-atomic",
+      "title": "Idle Discovery and Claiming Form One Safe Path",
+      "description": "An idle teammate scans only pending, unowned tasks whose dependencies are complete. The ownership check and pending-to-in_progress update happen under one lock, so two teammates cannot claim the same work.",
+      "alternatives": "Central dispatch keeps assignment simple, while an unlocked scan can assign the same task twice.",
+      "zh": {
+        "title": "空闲发现与原子认领组成一条安全路径",
+        "description": "空闲队友只扫描 pending、未分配且依赖已完成的任务。所有权检查与 pending 到 in_progress 的更新在同一把锁内完成，因此两个队友不会认领同一任务。"
+      },
+      "ja": {
+        "title": "待機中の探索と原子的な認領を一つの安全な経路にする",
+        "description": "待機中のチームメイトは pending、未所有、依存解決済みのタスクだけを探す。所有権確認と pending から in_progress への更新を同じ lock 内で行い、二重認領を防ぐ。"
+      }
+    },
+    {
+      "id": "task-bound-worktree",
+      "title": "The Working Directory Is a Task Property",
+      "description": "A task records its worktree binding, and a teammate's bash, read, and write tools derive their working directory from the claimed task. This is explicit cwd routing for parallel edits, not a security sandbox or a second orchestration system.",
+      "alternatives": "Letting agents switch directories implicitly is shorter, but makes the cwd boundary invisible and easy to lose.",
+      "zh": {
+        "title": "工作目录是任务的显式属性",
+        "description": "任务记录自己的 worktree 绑定，队友的 bash、read、write 工具从已认领任务推导工作目录。这是为并行编辑提供的显式 cwd 路由，不是安全沙箱，也不是第二套编排系统。"
+      },
+      "ja": {
+        "title": "作業ディレクトリをタスクの明示的な属性にする",
+        "description": "タスクが worktree の紐付けを保持し、チームメイトの bash、read、write は認領したタスクから作業ディレクトリを決める。これは並行編集のための明示的な cwd routing であり、security sandbox や第二の編成システムではない。"
+      }
+    },
+    {
+      "id": "worktree-cleanup-fails-closed",
+      "title": "Worktree Cleanup Fails Closed",
+      "description": "Creation binds a task only after git succeeds. Removal accepts only a known path under the worktree root and refuses unverifiable or dirty state unless discard is explicit; it never completes the task as a side effect.",
+      "alternatives": "Unconditional force removal is convenient, but can destroy unreviewed work and blur task completion with directory cleanup.",
+      "zh": {
+        "title": "Worktree 清理默认拒绝不安全操作",
+        "description": "只有 git 创建成功后才绑定任务。删除仅接受 worktree 根目录下的已知路径；状态无法验证或存在未保存改动时，除非明确选择丢弃，否则拒绝删除，并且不会顺带完成任务。"
+      },
+      "ja": {
+        "title": "Worktree の片付けは安全側に失敗する",
+        "description": "git の作成成功後にだけタスクを紐付ける。削除は worktree ルート配下の既知パスだけを受け付け、状態を確認できない場合や変更が残る場合は明示的な破棄なしに拒否し、タスクを副作用で完了させない。"
       }
     }
   ]