diff --git a/_board/TASKS/P11-15_FIX_REMINDER_LIST_HANDLER.md b/_board/TASKS/P11-15_FIX_REMINDER_LIST_HANDLER.md
new file mode 100644
index 0000000..843dfc9
--- /dev/null
+++ b/_board/TASKS/P11-15_FIX_REMINDER_LIST_HANDLER.md
@@ -0,0 +1,24 @@
+# P11-15: Fix Reminder List Handler in Orchestrator
+
+**File**: `src/core/orchestrator.ts`  
+**Dependencies**: P11-09  
+**Phase**: 5 - Bug Fix
+
+## Description
+Fix the orchestrator to properly handle `reminder.list` messages from telegram-adapter.
+
+## Problem
+The `handleListReminders` and `handleCancelReminder` methods exist but are never called because `handleCoreMessage` doesn't have handlers for `reminder.list` and `reminder.cancel` message types.
+
+## Acceptance Criteria
+- `handleCoreMessage` checks for `reminder.list` type from telegram-adapter
+- `handleCoreMessage` checks for `reminder.cancel` type from telegram-adapter
+- Both handlers properly invoke the respective methods
+- Error handling is in place for both handlers
+
+## Implementation Notes
+- Add `reminder.list` handler in `handleCoreMessage` before `task.create` handler
+- Add `reminder.cancel` handler in `handleCoreMessage` before `task.create` handler
+- Both should check `fromProcess === "telegram-adapter"`
+- Extract `chatId` and `reminderId` (for cancel) from payload
+- Call the respective handler methods with proper error handling
diff --git a/_board/_BOARD.md b/_board/_BOARD.md
index cf42d79..4184192 100644
--- a/_board/_BOARD.md
+++ b/_board/_BOARD.md
@@ -2,6 +2,15 @@
 
 ## To Do
 
+### P11-15 Fix Reminder List Handler in Orchestrator
+- tags: [todo, reminder-system, phase-5, bugfix]
+- defaultExpanded: false
+  ```md
+  Fix the orchestrator to properly handle reminder.list messages from telegram-adapter.
+
+  Source: P11-15_FIX_REMINDER_LIST_HANDLER.md
+  ```
+
 ### P11-12 Manual End-to-End Testing
 - tags: [todo, reminder-system, phase-6, testing]
 - defaultExpanded: false
@@ -13,6 +22,15 @@
 
 ## In Progress
 
+### P11-15 Fix Reminder List Handler in Orchestrator
+- tags: [in-progress, reminder-system, phase-5, bugfix]
+- defaultExpanded: false
+  ```md
+  Fix the orchestrator to properly handle reminder.list messages from telegram-adapter.
+
+  Source: P11-15_FIX_REMINDER_LIST_HANDLER.md
+  ```
+
 ## Done
 ### P11-14 Fix Cron Expression Extraction in Executor
 - tags: [done, reminder-system, phase-4, bugfix]