diff --git a/hooks/README.md b/hooks/README.md
index c7884e3..e46fac2 100644
--- a/hooks/README.md
+++ b/hooks/README.md
@@ -11,6 +11,7 @@ Ready-to-use hook scripts for automating Claude Code workflows. Hooks integrate
 | `safety-guard.sh` | PreToolUse | Block dangerous commands (rm -rf /, force push, DROP TABLE) |
 | `sensitive-files.sh` | PreToolUse | Block access to .env, credentials, *.key files |
 | `auto-format.sh` | PostToolUse | Auto-format files after edit (prettier/black/gofmt/clang-format) |
+| `status-hook.sh` | UserPromptSubmit / Stop / PermissionRequest | Write session status to `.status` file for dashboard and notify-on-stop |
 | `notify-on-stop.sh` | Stop | Desktop/tmux notification when Claude finishes (30s threshold) |
 | `context-alert.sh` | Stop | Warn when context usage exceeds 80% or 95% |
 | `usage-logger.sh` | Session | Log session usage to `~/.claude/hooks/usage.jsonl` |
@@ -33,6 +34,7 @@ bash hooks/uninstall.sh
 Hooks are split into two tiers:
 
 **Recommended ON (enabled by default):**
+- `status-hook.sh` — writes real-time session status for dashboard and notify-on-stop
 - `notify-on-stop.sh` — desktop/tmux notification when Claude finishes
 - `safety-guard.sh` — blocks destructive commands before they run
 - `sensitive-files.sh` — blocks access to credential files
@@ -93,6 +95,24 @@ Fires on `PostToolUse` for file edit tool calls. Detects the file type and runs
 | `.rb` | `rubocop -a` | built-in |
 | `.java` | `google-java-format` | built-in |
 
+### status-hook.sh
+
+Tracks the real-time status of each Claude session by writing a `.status` file to `~/.claude/sessions/<pid>.status`.
+
+**Format:** `<status> <epoch>`
+
+| Status | Event | Meaning |
+|--------|-------|---------|
+| `working` | UserPromptSubmit | Claude is processing a user message |
+| `working` | PermissionRequest | Claude is executing a tool |
+| `idle` | Stop | Claude has finished responding |
+
+Both `UserPromptSubmit` and `PermissionRequest` write `working`, so the status stays WORKING throughout the entire response (thinking + tool execution + reply). Only `Stop` transitions to `idle`.
+
+When writing `idle`, the hook **preserves the epoch from the last `working` state** rather than using the current time. This lets `notify-on-stop.sh` calculate elapsed working time accurately.
+
+The `.status` file is also read by the dashboard (`statusline/dashboard.sh`) to show real-time status without polling the session JSON.
+
 ### notify-on-stop.sh
 
 Fires on `Stop` events. Sends a notification when Claude finishes a response. Only fires if the session has been active for more than **30 seconds** (avoids noise for quick replies).
diff --git a/hooks/README.zh-TW.md b/hooks/README.zh-TW.md
index 24e6b50..13285e5 100644
--- a/hooks/README.zh-TW.md
+++ b/hooks/README.zh-TW.md
@@ -11,6 +11,7 @@
 | `safety-guard.sh` | PreToolUse | 攔截危險指令（rm -rf /、force push、DROP TABLE）|
 | `sensitive-files.sh` | PreToolUse | 攔截存取 .env、credentials、*.key 等敏感檔案 |
 | `auto-format.sh` | PostToolUse | 編輯後自動格式化（prettier/black/gofmt/clang-format）|
+| `status-hook.sh` | UserPromptSubmit / Stop / PermissionRequest | 寫入 `.status` 檔供 dashboard 和 notify-on-stop 即時讀取 |
 | `notify-on-stop.sh` | Stop | Claude 完成時桌面/tmux 通知（30 秒門檻）|
 | `context-alert.sh` | Stop | Context 使用超過 80% 或 95% 時警告 |
 | `usage-logger.sh` | Session | 記錄 session 使用量至 `~/.claude/hooks/usage.jsonl` |
@@ -33,6 +34,7 @@ bash hooks/uninstall.sh
 Hooks 分為兩個層級：
 
 **建議開啟（預設啟用）：**
+- `status-hook.sh` — 即時寫入 session 狀態，供 dashboard 和 notify-on-stop 使用
 - `notify-on-stop.sh` — Claude 完成時桌面/tmux 通知
 - `safety-guard.sh` — 在執行前攔截破壞性指令
 - `sensitive-files.sh` — 攔截存取憑證檔案
@@ -93,6 +95,24 @@ Hooks 分為兩個層級：
 | `.rb` | `rubocop -a` | 內建 |
 | `.java` | `google-java-format` | 內建 |
 
+### status-hook.sh
+
+在三個事件寫入 session 狀態至 `~/.claude/sessions/<pid>.status`。
+
+**格式：** `<status> <epoch>`
+
+| 狀態 | 事件 | 說明 |
+|------|------|------|
+| `working` | UserPromptSubmit | Claude 正在處理使用者訊息 |
+| `working` | PermissionRequest | Claude 正在執行工具 |
+| `idle` | Stop | Claude 完成回應 |
+
+`UserPromptSubmit` 和 `PermissionRequest` 都寫入 `working`，所以整個回覆期間（思考 + 工具執行 + 回覆）狀態都保持 WORKING，只有 `Stop` 才轉為 `idle`。
+
+寫入 `idle` 時，hook 會**保留上次 `working` 的 epoch**，讓 `notify-on-stop.sh` 能準確計算實際工作時間。
+
+`.status` 檔也供 dashboard（`statusline/dashboard.sh`）即時顯示狀態，無需輪詢 session JSON。
+
 ### notify-on-stop.sh
 
 在 `Stop` 事件觸發。當 Claude 完成回應時發送通知。僅在 session 持續超過 **30 秒**時觸發（避免快速回覆的噪音）。
diff --git a/hooks/install.sh b/hooks/install.sh
index 9608456..ad49edb 100755
--- a/hooks/install.sh
+++ b/hooks/install.sh
@@ -165,6 +165,20 @@ if [ "$_install_recommended" = "1" ]; then
       else .hooks.PreToolUse = ((.hooks.PreToolUse // []) + [{"matcher":"Read|Edit|Write","hooks":[{"type":"command","command":"sh ~/.claude/hooks/sensitive-files.sh"}]}])
       end'
 
+    # status-hook (UserPromptSubmit + Stop + PermissionRequest)
+    # Must be installed before notify-on-stop; Stop ordering is enforced in Step 7.
+    # notify-on-stop depends on the .status file written by status-hook.
+    _jq_filter="$_jq_filter"'
+    | if ([(.hooks.UserPromptSubmit // [])[] | .hooks[]? | .command // ""] | any(test("hooks/status-hook"))) then .
+      else .hooks.UserPromptSubmit = ((.hooks.UserPromptSubmit // []) + [{"hooks":[{"type":"command","command":"sh ~/.claude/hooks/status-hook.sh working"}]}])
+      end
+    | if ([(.hooks.Stop // [])[] | .hooks[]? | .command // ""] | any(test("hooks/status-hook"))) then .
+      else .hooks.Stop = ((.hooks.Stop // []) + [{"hooks":[{"type":"command","command":"sh ~/.claude/hooks/status-hook.sh idle"}]}])
+      end
+    | if ([(.hooks.PermissionRequest // [])[] | .hooks[]? | .command // ""] | any(test("hooks/status-hook"))) then .
+      else .hooks.PermissionRequest = ((.hooks.PermissionRequest // []) + [{"hooks":[{"type":"command","command":"sh ~/.claude/hooks/status-hook.sh working"}]}])
+      end'
+
     # notify-on-stop (Stop)
     _jq_filter="$_jq_filter"'
     | if ([(.hooks.Stop // [])[] | .hooks[]? | .command // ""] | any(test("hooks/notify-on-stop"))) then .
diff --git a/hooks/status-hook.sh b/hooks/status-hook.sh
new file mode 100755
index 0000000..97583dc
--- /dev/null
+++ b/hooks/status-hook.sh
@@ -0,0 +1,51 @@
+#!/bin/sh
+# Claude Code hook: track session status in a .status file.
+#
+# Events (configure in settings.json):
+#   UserPromptSubmit  → sh ~/.claude/hooks/status-hook.sh working
+#   Stop              → sh ~/.claude/hooks/status-hook.sh idle
+#   PermissionRequest → sh ~/.claude/hooks/status-hook.sh waiting
+#
+# Output format: "<status> <epoch>" in ~/.claude/sessions/<claude_pid>.status
+#
+# For "idle", the epoch written is the one saved when "working" was set —
+# preserving the start of the working period so notify-on-stop.sh can
+# compute elapsed time accurately.
+
+STATUS="${1:?Usage: status-hook.sh <working|idle|waiting>}"
+SESSIONS_DIR="$HOME/.claude/sessions"
+
+# Find the Claude PID.  Hooks run as direct children of claude, so $PPID is
+# usually the claude PID itself.  Walk up a few levels to be safe.
+_claude_pid=""
+_check="$PPID"
+for _i in 1 2 3 4; do
+    _comm=$(ps -o comm= -p "$_check" 2>/dev/null | tr -d ' ')
+    if [ "$_comm" = "claude" ]; then
+        _claude_pid="$_check"
+        break
+    fi
+    _check=$(ps -o ppid= -p "$_check" 2>/dev/null | tr -d ' ')
+    [ -z "$_check" ] || [ "$_check" = "0" ] || [ "$_check" = "1" ] && break
+done
+
+[ -z "$_claude_pid" ] && exit 0
+
+_statusfile="$SESSIONS_DIR/${_claude_pid}.status"
+_epoch=$(date +%s)
+
+if [ "$STATUS" = "idle" ]; then
+    # Preserve the epoch recorded when "working" was written so that
+    # notify-on-stop.sh can compute how long the task actually took.
+    _working_epoch=""
+    if [ -f "$_statusfile" ]; then
+        _prev_status="" _prev_epoch=""
+        read -r _prev_status _prev_epoch < "$_statusfile" 2>/dev/null || true
+        if [ "$_prev_status" = "working" ] && [ -n "$_prev_epoch" ]; then
+            _working_epoch="$_prev_epoch"
+        fi
+    fi
+    _epoch="${_working_epoch:-$_epoch}"
+fi
+
+printf '%s %s\n' "$STATUS" "$_epoch" > "$_statusfile" 2>/dev/null || true