diff --git a/src/daemon/experience.py b/src/daemon/experience.py
index 1745ded..59503c3 100644
--- a/src/daemon/experience.py
+++ b/src/daemon/experience.py
@@ -1,3 +1,5 @@
+# DEPRECATED per §19 重设计 — 经验蒸馏改为双层 daily cron（L1 各 agent + L2 庞统）
+# 保留代码供参考，后续 P3 清理时物理删除
 """Experience Distillation — 经验蒸馏
 
 从已完成的任务产出中提取经验：
diff --git a/src/daemon/skill_system.py b/src/daemon/skill_system.py
index a54afb4..4e7bb15 100644
--- a/src/daemon/skill_system.py
+++ b/src/daemon/skill_system.py
@@ -1,3 +1,6 @@
+# DEPRECATED per §19 重设计 — 不再参与 skill 发现/加载
+# 实际 skill 发现走 openclaw 原生 <available_skills> 机制
+# 保留代码供参考，后续 P3 清理时物理删除
 """Skill System — 技能注册、加载、匹配、执行
 
 三层自由度：
diff --git a/src/daemon/ticker.py b/src/daemon/ticker.py
index dec6b06..cf28dce 100644
--- a/src/daemon/ticker.py
+++ b/src/daemon/ticker.py
@@ -332,25 +332,10 @@ class Ticker:
             except Exception as e:
                 logger.warning("HealthChecker error for %s: %s", project_id, e)
 
-        # 9. 经验蒸馏（完成的 task 自动触发）
+        # 9. 经验蒸馏 — DEPRECATED per §19, 双层 daily cron 替代
+        # 保留参数向后兼容，不再执行逐任务蒸馏
         if self.experience_distiller:
-            try:
-                conn2 = get_connection(db_path)
-                try:
-                    done_tasks = conn2.execute(
-                        "SELECT id FROM tasks WHERE status='done' AND updated_at > datetime('now', '-60 seconds')"
-                    ).fetchall()
-                finally:
-                    conn2.close()
-                for row in done_tasks:
-                    t = Blackboard(db_path).get_task(row[0])
-                    if t:
-                        self.experience_distiller.distill_from_task(
-                            task_id=t.id, task_title=t.title, task_type=t.task_type
-                        )
-            except Exception as e:
-                logger.warning(
-                    "ExperienceDistiller error for %s: %s", project_id, e)
+            logger.debug("ExperienceDistiller deprecated per §19, skipping (use L1/L2 daily cron)")
 
         # 10. 扫描后状态
         result["summary_after"] = queries.task_summary()