diff --git a/s05_todo_write/code.py b/s05_todo_write/code.py
index 9c88de35..0529cba3 100644
--- a/s05_todo_write/code.py
+++ b/s05_todo_write/code.py
@@ -232,10 +232,8 @@ register_hook("Stop", summary_hook)
 #  agent_loop — same as s04 + nag reminder counter
 # ═══════════════════════════════════════════════════════════
 
-rounds_since_todo = 0
-
 def agent_loop(messages: list):
-    global rounds_since_todo
+    rounds_since_todo = 0
     while True:
         # s05: nag reminder — inject if model hasn't updated todos for 3 rounds
         if rounds_since_todo >= 3 and messages:
diff --git a/s06_subagent/code.py b/s06_subagent/code.py
index 2732246b..901a6368 100644
--- a/s06_subagent/code.py
+++ b/s06_subagent/code.py
@@ -312,10 +312,8 @@ register_hook("Stop", summary_hook)
 #  agent_loop — same as s05 + nag reminder, task auto-dispatches
 # ═══════════════════════════════════════════════════════════
 
-rounds_since_todo = 0
-
 def agent_loop(messages: list):
-    global rounds_since_todo
+    rounds_since_todo = 0
     while True:
         # s05: nag reminder
         if rounds_since_todo >= 3 and messages:
diff --git a/s07_skill_loading/code.py b/s07_skill_loading/code.py
index b4506fc5..45c04313 100644
--- a/s07_skill_loading/code.py
+++ b/s07_skill_loading/code.py
@@ -356,10 +356,8 @@ register_hook("Stop", summary_hook)
 #  agent_loop — same as s05-s06 + nag reminder
 # ═══════════════════════════════════════════════════════════
 
-rounds_since_todo = 0
-
 def agent_loop(messages: list):
-    global rounds_since_todo
+    rounds_since_todo = 0
     while True:
         if rounds_since_todo >= 3 and messages:
             messages.append({"role": "user",
diff --git a/s08_context_compact/README.en.md b/s08_context_compact/README.en.md
index 15199c37..b35b7125 100644
--- a/s08_context_compact/README.en.md
+++ b/s08_context_compact/README.en.md
@@ -136,7 +136,7 @@ def compact_history(messages):
 
 Sometimes the API still returns `prompt_too_long` (413) — when context grows faster than compression triggers.
 
-This triggers **reactive_compact**: more aggressive than compact_history, it retreats from the tail, but still avoids leaving an orphaned `tool_result`.
+This triggers **reactive_compact**: more aggressive than compact_history in trigger (emergency response to a 413 error), but more conservative in what it removes, keeping ~5 recent messages and only summarizing earlier history. Still avoids an orphaned `tool_result`.
 
 ```python
 def reactive_compact(messages):
diff --git a/s08_context_compact/README.ja.md b/s08_context_compact/README.ja.md
index da174d0a..9d8ba810 100644
--- a/s08_context_compact/README.ja.md
+++ b/s08_context_compact/README.ja.md
@@ -136,7 +136,7 @@ def compact_history(messages):
 
 API がまだ `prompt_too_long`（413）を返すことがある。コンテキストの増加速度が圧縮のトリガー速度を上回る場合。
 
-この時 **reactive_compact** がトリガーされる：compact_history よりもさらに積極的だが、末尾を残す際も孤立した `tool_result` を残さないようにする。
+この時 **reactive_compact** がトリガーされる。トリガー方式は compact_history より積極的（413 エラー後の緊急対応）だが、圧縮方針はより温和で、末尾約 5 件のメッセージを保持し、早期の履歴だけを要約する。孤立した `tool_result` を残さないよう配慮する。
 
 ```python
 def reactive_compact(messages):
diff --git a/s08_context_compact/README.md b/s08_context_compact/README.md
index ab5dae54..7f63b49f 100644
--- a/s08_context_compact/README.md
+++ b/s08_context_compact/README.md
@@ -136,7 +136,7 @@ def compact_history(messages):
 
 有时候 API 还是返回 `prompt_too_long`（413），上下文增长速度快于压缩触发速度时。
 
-这时触发 **reactive_compact**：比 compact_history 更激进，从尾部回退，但仍要避免留下孤立 `tool_result`。
+这时触发 **reactive_compact**：触发方式比 compact_history 更激进（API 报错后的应急手段），但压缩策略更温和，保留最近约 5 条原始消息，只总结较早历史。同样避免留下孤立 `tool_result`。
 
 ```python
 def reactive_compact(messages):
diff --git a/s10_system_prompt/README.en.md b/s10_system_prompt/README.en.md
index fcaa99c9..bcf1811a 100644
--- a/s10_system_prompt/README.en.md
+++ b/s10_system_prompt/README.en.md
@@ -68,9 +68,6 @@ Split the monolithic string into a dictionary, each key is a topic:
 ```python
 PROMPT_SECTIONS = {
     "identity": "You are a coding agent. Act, don't explain.",
-    "tools": "Available tools: bash, read_file, write_file.",
-    "workspace": f"Working directory: {WORKDIR}",
-    "memory": "Relevant memories are injected below when available.",
 }
 ```
 
@@ -86,8 +83,12 @@ def assemble_system_prompt(context: dict) -> str:
 
     # Always loaded
     sections.append(PROMPT_SECTIONS["identity"])
-    sections.append(PROMPT_SECTIONS["tools"])
-    sections.append(PROMPT_SECTIONS["workspace"])
+
+    # Dynamic — tools and workspace from context
+    tools = ", ".join(context.get("enabled_tools", []))
+    if tools:
+        sections.append(f"Available tools: {tools}.")
+    sections.append(f"Working directory: {context.get("workspace", WORKDIR)}")
 
     # On-demand — based on real state, not keywords
     memories = context.get("memories", "")
diff --git a/s10_system_prompt/README.ja.md b/s10_system_prompt/README.ja.md
index 50f8f95f..cfe8f95b 100644
--- a/s10_system_prompt/README.ja.md
+++ b/s10_system_prompt/README.ja.md
@@ -68,9 +68,6 @@ s10 は prompt アセンブリ機構に焦点を当てる。s08-s09 の能力を
 ```python
 PROMPT_SECTIONS = {
     "identity": "You are a coding agent. Act, don't explain.",
-    "tools": "Available tools: bash, read_file, write_file.",
-    "workspace": f"Working directory: {WORKDIR}",
-    "memory": "Relevant memories are injected below when available.",
 }
 ```
 
@@ -86,8 +83,12 @@ def assemble_system_prompt(context: dict) -> str:
 
     # 常にロード
     sections.append(PROMPT_SECTIONS["identity"])
-    sections.append(PROMPT_SECTIONS["tools"])
-    sections.append(PROMPT_SECTIONS["workspace"])
+
+    # context から動的に tools と workspace を取得
+    tools = ", ".join(context.get("enabled_tools", []))
+    if tools:
+        sections.append(f"Available tools: {tools}.")
+    sections.append(f"Working directory: {context.get("workspace", WORKDIR)}")
 
     # オンデマンド — 実際の状態に基づく、キーワードではない
     memories = context.get("memories", "")
diff --git a/s10_system_prompt/README.md b/s10_system_prompt/README.md
index 2ed0d6a5..0cd95930 100644
--- a/s10_system_prompt/README.md
+++ b/s10_system_prompt/README.md
@@ -68,9 +68,6 @@ s10 聚焦 prompt 组装机制。以 s08-s09 的能力为背景，但不重复
 ```python
 PROMPT_SECTIONS = {
     "identity": "You are a coding agent. Act, don't explain.",
-    "tools": "Available tools: bash, read_file, write_file.",
-    "workspace": f"Working directory: {WORKDIR}",
-    "memory": "Relevant memories are injected below when available.",
 }
 ```
 
@@ -86,8 +83,12 @@ def assemble_system_prompt(context: dict) -> str:
 
     # 始终加载
     sections.append(PROMPT_SECTIONS["identity"])
-    sections.append(PROMPT_SECTIONS["tools"])
-    sections.append(PROMPT_SECTIONS["workspace"])
+
+    # 从 context 动态获取 tools 和 workspace
+    tools = ", ".join(context.get("enabled_tools", []))
+    if tools:
+        sections.append(f"Available tools: {tools}.")
+    sections.append(f"Working directory: {context.get("workspace", WORKDIR)}")
 
     # 按需加载 — 基于真实状态，不是关键词
     memories = context.get("memories", "")
diff --git a/s10_system_prompt/code.py b/s10_system_prompt/code.py
index 723adc6d..be1d5f3d 100644
--- a/s10_system_prompt/code.py
+++ b/s10_system_prompt/code.py
@@ -41,9 +41,6 @@ MODEL = os.environ["MODEL_ID"]
 
 PROMPT_SECTIONS = {
     "identity": "You are a coding agent. Act, don't explain.",
-    "tools": "Available tools: bash, read_file, write_file.",
-    "workspace": f"Working directory: {WORKDIR}",
-    "memory": "Relevant memories are injected below when available.",
 }
 
 
@@ -51,10 +48,14 @@ def assemble_system_prompt(context: dict) -> str:
     """Select and join prompt sections based on current context."""
     sections = []
 
-    # Always loaded — identity, tools, workspace
+    # Always loaded — identity
     sections.append(PROMPT_SECTIONS["identity"])
-    sections.append(PROMPT_SECTIONS["tools"])
-    sections.append(PROMPT_SECTIONS["workspace"])
+
+    # Dynamic — tools and workspace from context
+    tools = ", ".join(context.get("enabled_tools", []))
+    if tools:
+        sections.append(f"Available tools: {tools}.")
+    sections.append(f"Working directory: {context.get("workspace", WORKDIR)}")
 
     # Conditional — memory loaded when MEMORY.md exists and has content
     memories = context.get("memories", "")
diff --git a/s11_error_recovery/code.py b/s11_error_recovery/code.py
index 8a4862b8..f54fe28c 100644
--- a/s11_error_recovery/code.py
+++ b/s11_error_recovery/code.py
@@ -272,10 +272,10 @@ def agent_loop(messages: list, context: dict):
         # ── LLM call: with_retry handles 429/529, outer handles rest ──
         try:
             response = with_retry(
-                lambda mt=max_tokens, mdl=state.current_model:
-                    client.messages.create(
-                        model=mdl, system=system, messages=messages,
-                        tools=TOOLS, max_tokens=mt),
+                lambda: client.messages.create(
+                    model=state.current_model, system=system,
+                    messages=messages, tools=TOOLS,
+                    max_tokens=max_tokens),
                 state)
         except Exception as e:
             # Path 2: prompt_too_long -> reactive compact (once)
diff --git a/s17_autonomous_agents/README.en.md b/s17_autonomous_agents/README.en.md
index 2d676faf..d229194b 100644
--- a/s17_autonomous_agents/README.en.md
+++ b/s17_autonomous_agents/README.en.md
@@ -195,15 +195,15 @@ Two teammates claim and work in parallel. Lead only creates tasks and spawns tea
 | Component | Before (s16) | After (s17) |
 |-----------|-------------|-------------|
 | Task assignment | Lead manually assigns | Teammates auto-claim (can_start checks deps) |
-| Teammate state | WORK or exit | WORK → IDLE (60s poll) → SHUTDOWN |
+| Teammate state | WORK → IDLE (1s inbox poll) → WORK / SHUTDOWN | WORK → IDLE (5s inbox + task board poll, 60s timeout) → WORK / SHUTDOWN |
 | claim_task | No owner check | Rejects tasks that already have an owner |
-| IDLE phase shutdown | Doesn't handle shutdown_request | Dispatches shutdown immediately and exits |
-| Lead inbox | Prints only, not in context | consume_lead_inbox injects into history |
-| New functions | — | idle_poll, scan_unclaimed_tasks, consume_lead_inbox |
+| IDLE phase shutdown | Exits after receiving shutdown_request | Dispatches shutdown immediately and exits |
+| Lead inbox | consume_lead_inbox routes protocol responses and injects into context | Reuses consume_lead_inbox mechanism |
+| New functions | consume_lead_inbox already exists | idle_poll, scan_unclaimed_tasks (reuses consume_lead_inbox) |
 | Identity persistence | System prompt only | Auto re-inject after compression |
-| Lead tools | 14 (s16) | 14 (unchanged) |
+| Lead tools | 14 | 14 (unchanged) |
 | Teammate tools | 5 | 8 (+ list_tasks, claim_task, complete_task) |
-| Teammate exit | Exit after task done | Exit only after 60s idle timeout |
+| Teammate exit | WORK ends → enters IDLE, waits for shutdown_request (no timeout) | Exits after 60s idle timeout or receiving shutdown_request |
 
 ---
 
diff --git a/s17_autonomous_agents/README.ja.md b/s17_autonomous_agents/README.ja.md
index a88642d8..14177872 100644
--- a/s17_autonomous_agents/README.ja.md
+++ b/s17_autonomous_agents/README.ja.md
@@ -195,15 +195,15 @@ if len(messages) <= 3:
 | コンポーネント | 変更前 (s16) | 変更後 (s17) |
 |--------------|------------|------------|
 | タスク割り当て | Lead が手動 assign | チームメイトが自動認領（can_start で依存確認） |
-| チームメイト状態 | WORK または終了 | WORK → IDLE（60s ポーリング） → SHUTDOWN |
+| チームメイト状態 | WORK → IDLE（1s 間隔で inbox をポーリング）→ WORK / SHUTDOWN | WORK → IDLE（5s 間隔で inbox + タスクボードをポーリング、60s タイムアウト）→ WORK / SHUTDOWN |
 | claim_task | owner チェックなし | 既に owner があるタスクを拒否 |
-| IDLE フェーズシャットダウン | shutdown_request を処理しない | 即座にシャットダウンをディスパッチして終了 |
-| Lead inbox | 印刷のみ、コンテキストに入らない | consume_lead_inbox で history に注入 |
-| 新規関数 | — | idle_poll, scan_unclaimed_tasks, consume_lead_inbox |
+| IDLE フェーズシャットダウン | shutdown_request を受信後に終了 | 即座にシャットダウンをディスパッチして終了 |
+| Lead inbox | consume_lead_inbox がプロトコル応答をルーティングしコンテキストに注入 | consume_lead_inbox 機構を踏襲 |
+| 新規関数 | consume_lead_inbox は既存 | idle_poll, scan_unclaimed_tasks（consume_lead_inbox を踏襲） |
 | 身份保持 | system prompt のみ | 圧縮後に自動再注入 |
-| Lead ツール | 14 (s16) | 14（変更なし） |
+| Lead ツール | 14 | 14（変更なし） |
 | チームメイトツール | 5 | 8（+ list_tasks, claim_task, complete_task） |
-| チームメイト終了条件 | タスク完了後即終了 | 60s アイドルタイムアウト後のみ終了 |
+| チームメイト終了条件 | WORK 完了後 IDLE に入り、shutdown_request を待って終了（タイムアウトなし） | 60s アイドルタイムアウトまたは shutdown_request 受信で終了 |
 
 ---
 
diff --git a/s17_autonomous_agents/README.md b/s17_autonomous_agents/README.md
index b3192c2d..0370cdbc 100644
--- a/s17_autonomous_agents/README.md
+++ b/s17_autonomous_agents/README.md
@@ -195,15 +195,15 @@ if len(messages) <= 3:
 | 组件 | 之前 (s16) | 之后 (s17) |
 |------|-----------|-----------|
 | 任务分配 | Lead 手动 assign | 队友自动认领（can_start 检查依赖） |
-| 队友状态 | WORK 或退出 | WORK → IDLE（轮询 60s） → SHUTDOWN |
+| 队友状态 | WORK → IDLE（每 1s 轮询 inbox）→ WORK / SHUTDOWN | WORK → IDLE（每 5s 轮询 inbox + 任务板，60s 超时）→ WORK / SHUTDOWN |
 | claim_task | 无 owner 检查 | 拒绝已有 owner 的任务 |
-| IDLE 阶段关机 | 不处理 shutdown_request | 直接 dispatch shutdown 并退出 |
-| Lead inbox | 只打印，不进上下文 | consume_lead_inbox 统一注入 history |
-| 新函数 | — | idle_poll, scan_unclaimed_tasks, consume_lead_inbox |
+| IDLE 阶段关机 | 收到 shutdown_request 后退出 | 直接 dispatch shutdown 并退出 |
+| Lead inbox | consume_lead_inbox 路由协议响应并注入上下文 | 沿用 consume_lead_inbox 机制 |
+| 新函数 | 已有 consume_lead_inbox | idle_poll, scan_unclaimed_tasks（沿用 consume_lead_inbox） |
 | 身份保持 | 仅 system prompt | 压缩后自动重注入 |
-| Lead 工具 | 14 (s16) | 14（不变） |
+| Lead 工具 | 14 | 14（不变） |
 | 队友工具 | 5 | 8（+ list_tasks, claim_task, complete_task） |
-| 队友退出条件 | 完成任务即退出 | 60s 无新任务才退出 |
+| 队友退出条件 | WORK 完进入 IDLE，等待 shutdown_request 后退出（无超时） | 60s 无新任务或收到 shutdown_request 后退出 |
 
 ---