diff --git a/src/lib/thread.hpp b/src/lib/thread.hpp
index 7b81d7413..70e4ee91f 100644
--- a/src/lib/thread.hpp
+++ b/src/lib/thread.hpp
@@ -214,9 +214,9 @@ namespace lib {
         void waitGracePeriod()  noexcept;
         
         /* empty implementation for some policy methods */
-        void handle_begin_thread() { }
-        void handle_after_thread() { }
-        void handle_thread_still_running() { }
+        void handle_begin_thread() { }   ///< called immediately at start of thread
+        void handle_after_thread() { }   ///< called immediately before end of thread
+        void handle_loose_thread() { }   ///< called when destroying wrapper on still running thread
       };
     
     
@@ -253,7 +253,7 @@ namespace lib {
           }
         
         void
-        handle_thread_still_running()
+        handle_loose_thread()
           {
             BAS::waitGracePeriod();
           }
@@ -283,13 +283,67 @@ namespace lib {
           }
         
         void
-        handle_thread_still_running()
+        handle_loose_thread()
           {
             ALERT (thread, "Self-managed thread was deleted from outside. Abort.");
           }
       };
     
     
+    /**
+     * Thread Lifecycle Policy Extension:
+     * additionally self-manage the thread-wrapper allocation.
+     * @warning the thread-wrapper must have been heap-allocated.
+     */
+    template<class BAS, class TAR>
+    struct PolicyLifecycleHook
+      : PolicyLaunchOnly<BAS>
+      {
+        using BasePol = PolicyLaunchOnly<BAS>;
+        using BasePol::BasePol;
+        
+        using Hook = function<void(TAR&)>;
+        
+        Hook hook_beginThread{};
+        Hook hook_afterThread{};
+        Hook hook_looseThread{};
+        
+        TAR&
+        castInstance()
+          {
+            return static_cast<TAR*>(
+                   static_cast<void*> (this));
+          }
+        
+        void
+        handle_begin_thread()
+          {
+            if (hook_beginThread)
+              hook_beginThread (castInstance());
+            else
+              BasePol::handle_begin_thread();
+          }
+        
+        void
+        handle_after_thread()
+          {
+            if (hook_afterThread)
+              hook_afterThread (castInstance());
+            else
+              BasePol::handle_after_thread();
+          }
+        
+        void
+        handle_loose_thread()
+          {
+            if (hook_looseThread)
+              hook_looseThread (castInstance());
+            else
+              BasePol::handle_loose_thread();
+          }
+      };
+    
+    
     /**
      * Thread Lifecycle Policy:
      * - thread with the ability to publish results
@@ -328,7 +382,7 @@ namespace lib {
           }
         
         void
-        handle_thread_still_running()
+        handle_loose_thread()
           {
             ALERT (thread, "Thread '%s' was not joined. Abort.", BAS::threadID_.c_str());
           }
@@ -360,7 +414,7 @@ namespace lib {
        ~ThreadLifecycle()
           {
             if (Policy::isLive())
-              Policy::handle_thread_still_running();
+              Policy::handle_loose_thread();
           }
         
         /** derived classes may create a disabled thread */
@@ -423,6 +477,40 @@ namespace lib {
                 return move(*this);
               }
             
+            template<typename HOOK>
+            Launch&&
+            atStart (HOOK&& hook)
+              {
+                return addHook (&Policy::hook_beginThread, forward<HOOK> (hook));
+              }
+            
+            template<typename HOOK>
+            Launch&&
+            atEnd (HOOK&& hook)
+              {
+                return addHook (&Policy::hook_afterThread, forward<HOOK> (hook));
+              }
+            
+            template<typename HOOK>
+            Launch&&
+            onOrphan (HOOK&& hook)
+              {
+                return addHook (&Policy::hook_looseThread, forward<HOOK> (hook));
+              }
+            
+          private:
+            template<typename HOOK, class FUN>
+            Launch&&
+            addHook (FUN Policy::*storedHook, HOOK&& hook)
+              {
+                return addLayer ([storedHook, hook = forward<HOOK>(hook)]
+                                 (ThreadLifecycle& wrapper)
+                                    {
+                                      wrapper.*storedHook = move (hook);
+                                      chain (wrapper);
+                                    });
+              }
+            
             Launch&&
             addLayer (Act action)
               {
diff --git a/wiki/thinkPad.ichthyo.mm b/wiki/thinkPad.ichthyo.mm
index 4b7625c9c..056657e52 100644
--- a/wiki/thinkPad.ichthyo.mm
+++ b/wiki/thinkPad.ichthyo.mm
@@ -65206,6 +65206,7 @@
 </node>
 <node CREATED="1696529718984" ID="ID_1539716722" MODIFIED="1696529944892" TEXT="zus&#xe4;tzlichen Erweiterungspunkt nutzen">
 <arrowlink COLOR="#fdfcc6" DESTINATION="ID_1373519021" ENDARROW="Default" ENDINCLINATION="-114;10;" ID="Arrow_ID_736802000" STARTARROW="None" STARTINCLINATION="116;8;"/>
+<arrowlink COLOR="#fdfcc6" DESTINATION="ID_1004228427" ENDARROW="Default" ENDINCLINATION="-114;10;" ID="Arrow_ID_936715522" STARTARROW="None" STARTINCLINATION="116;8;"/>
 <icon BUILTIN="idea"/>
 </node>
 <node BACKGROUND_COLOR="#e0ceaa" COLOR="#690f14" CREATED="1696529962087" ID="ID_683965677" MODIFIED="1696531663483" TEXT="ownership wird hier gekapert">
@@ -65310,6 +65311,26 @@
 <icon BUILTIN="stop-sign"/>
 </node>
 </node>
+<node BACKGROUND_COLOR="#eee5c3" COLOR="#990000" CREATED="1696899336883" ID="ID_241659538" MODIFIED="1696899355344" TEXT="andere Idee: man k&#xf6;nnte nun Variante-1 auf Variante-2 zur&#xfc;ckf&#xfc;hren">
+<icon BUILTIN="idea"/>
+<node CREATED="1696899356785" ID="ID_1810857858" MODIFIED="1696899370834" TEXT="...und zwar weil Variante-1 jetzt ziemlich hohl geworden ist"/>
+<node CREATED="1696899371359" ID="ID_204770506" MODIFIED="1696899384536" TEXT="im Besonderen wird gar keine spezielle Storage ben&#xf6;tigt"/>
+<node CREATED="1696899394883" ID="ID_221270967" MODIFIED="1696899414119" TEXT="das hei&#xdf;t: das k&#xf6;nnte genausogut ein lifecycle-Hook machen">
+<icon BUILTIN="idea"/>
+</node>
+<node CREATED="1696899431703" ID="ID_804029707" MODIFIED="1696899484220" TEXT="...und dieser w&#xfc;rde eine ThreadLifecycle-Instanz als Argument bekommen">
+<richcontent TYPE="NOTE"><html>
+  <head>
+    
+  </head>
+  <body>
+    <p>
+      ...und wir w&#228;ren aus der Nummer raus: das ist n&#228;mlich oberhalb der protected inheritance
+    </p>
+  </body>
+</html></richcontent>
+</node>
+</node>
 </node>
 </node>
 <node CREATED="1696532404400" ID="ID_1917558827" MODIFIED="1696539443047" TEXT="Variante-2 : optional-Lifecycle">
@@ -65326,8 +65347,8 @@
   </body>
 </html></richcontent>
 </node>
-<node BACKGROUND_COLOR="#fdfdcf" COLOR="#ff0000" CREATED="1696532676404" ID="ID_91266848" MODIFIED="1696624166370" TEXT="Front-End">
-<icon BUILTIN="flag-pink"/>
+<node COLOR="#5b280f" CREATED="1696532676404" ID="ID_91266848" MODIFIED="1696934197232" TEXT="Front-End">
+<icon BUILTIN="button_cancel"/>
 <node CREATED="1696532680835" ID="ID_553798887" MODIFIED="1696536376316">
 <richcontent TYPE="NODE"><html>
   <head/>
@@ -65350,8 +65371,7 @@
 </html></richcontent>
 <icon BUILTIN="button_cancel"/>
 </node>
-</node>
-<node BACKGROUND_COLOR="#fdfdcf" COLOR="#ff0000" CREATED="1696536837512" ID="ID_1958442975" MODIFIED="1696624184191" TEXT="Lebenszyklus-Zustand wird atomar verwaltet (acquire_release)">
+<node COLOR="#5b280f" CREATED="1696536837512" ID="ID_1958442975" MODIFIED="1696934192282" TEXT="Lebenszyklus-Zustand wird atomar verwaltet (acquire_release)">
 <richcontent TYPE="NOTE"><html>
   <head/>
   <body>
@@ -65360,7 +65380,28 @@
     </p>
   </body>
 </html></richcontent>
-<icon BUILTIN="flag-pink"/>
+<icon BUILTIN="button_cancel"/>
+</node>
+<node BACKGROUND_COLOR="#e0ceaa" COLOR="#690f14" CREATED="1696934162253" ID="ID_724180880" MODIFIED="1696934184964" STYLE="fork" TEXT="das f&#xfc;hrt zu starker Kopplung im Design">
+<icon BUILTIN="stop-sign"/>
+</node>
+</node>
+<node CREATED="1696934198943" ID="ID_737180308" MODIFIED="1696934210349" TEXT="besser: funktionale Erweiterungspunkte">
+<node CREATED="1696934212695" ID="ID_1626568717" MODIFIED="1696934238138" TEXT="diese werden als std::function gespeichert"/>
+<node CREATED="1696934261703" ID="ID_266607477" MODIFIED="1696934280168" TEXT="und aus entsprechenden Policy-hooks heraus aufgerufen"/>
+<node CREATED="1696934280923" ID="ID_787857879" MODIFIED="1696934285592" TEXT="Hooks">
+<node CREATED="1696529808620" ID="ID_78597801" MODIFIED="1696529832292" TEXT="umbenennen: &#x27fc; handle_after_thread"/>
+<node CREATED="1696529836760" ID="ID_1004228427" MODIFIED="1696934402647" TEXT="zus&#xe4;tzlich: &#x27ff; handle_begin_thread">
+<linktarget COLOR="#fdfcc6" DESTINATION="ID_1004228427" ENDARROW="Default" ENDINCLINATION="-114;10;" ID="Arrow_ID_936715522" SOURCE="ID_1539716722" STARTARROW="None" STARTINCLINATION="116;8;"/>
+</node>
+<node CREATED="1696529836760" ID="ID_1153306127" MODIFIED="1696934476853" TEXT="zus&#xe4;tzlich: &#x27ff; handle_loose_thread">
+<linktarget COLOR="#fdfcc6" DESTINATION="ID_1153306127" ENDARROW="Default" ENDINCLINATION="-114;10;" ID="Arrow_ID_880044186" SOURCE="ID_1868637331" STARTARROW="None" STARTINCLINATION="263;12;"/>
+<node CREATED="1696933886929" HGAP="25" ID="ID_796423082" MODIFIED="1696933932976" TEXT="(wird aufgerufen aus dem Destruktor &#x2014; falls der Thread noch l&#xe4;uft)" VSHIFT="7">
+<font NAME="SansSerif" SIZE="11"/>
+<icon BUILTIN="info"/>
+</node>
+</node>
+</node>
 </node>
 </node>
 <node CREATED="1696532838782" ID="ID_46766207" MODIFIED="1696532858447" TEXT="der Konflikt im Lebensdauer-Thema ist damit beigelegt">
@@ -65978,7 +66019,13 @@
 <icon BUILTIN="ksmiletris"/>
 </node>
 </node>
-<node CREATED="1696538612261" ID="ID_661367597" MODIFIED="1696538614839" TEXT="f&#xfc;r Variante-2"/>
+<node CREATED="1696538612261" ID="ID_661367597" MODIFIED="1696538614839" TEXT="f&#xfc;r Variante-2">
+<node CREATED="1696933810166" ID="ID_906750178" MODIFIED="1696933829261" TEXT="stelle Storage bereit als std::function"/>
+<node CREATED="1696529718984" ID="ID_1868637331" MODIFIED="1696934476853" TEXT="die schon definierten Hooks + zus&#xe4;tzlichen Erweiterungspunkt">
+<arrowlink COLOR="#fdfcc6" DESTINATION="ID_1153306127" ENDARROW="Default" ENDINCLINATION="-114;10;" ID="Arrow_ID_880044186" STARTARROW="None" STARTINCLINATION="263;12;"/>
+<icon BUILTIN="idea"/>
+</node>
+</node>
 </node>
 <node COLOR="#338800" CREATED="1696690988844" ID="ID_480585061" MODIFIED="1696861459249" TEXT="das Race-Problem addressieren">
 <icon BUILTIN="button_ok"/>