docs(memory): deprecate plan mode and index project mode

assets/global_mem_insight_template.txt

@@ -3,7 +3,7 @@
 L0(META-SOP): memory_management_sop
 L2: 现空
 L3: memory_cleanup_sop(记忆整理) | ui_detect.py | ocr_utils.py | subagent | web_setup_sop
-| procmem_scanner | keychain | ljqCtrl_sop+.py | tmwebdriver_sop | autonomous_operation_sop | scheduled_task_sop | vision_sop | adb_ui.py
+| procmem_scanner | keychain | ljqCtrl_sop+.py | tmwebdriver_sop | autonomous_operation_sop | scheduled_task_sop | vision_sop | adb_ui.py | project_mode_sop
 L4: L4_raw_sessions/ 历史会话
 
 浏览器特殊操作: tmwebdriver_sop(文件上传/图搜/PDF blob/物理坐标/HttpOnly Cookie/autofill突破/跨域iframe/CDP/跨tab)

assets/global_mem_insight_template_en.txt

@@ -3,7 +3,7 @@ Read L2 or ls ../memory/ for L3 when needed
 L0(META-SOP): memory_management_sop
 L2: currently empty
 L3: memory_cleanup_sop(memory cleanup) | ui_detect.py | ocr_utils.py | subagent | web_setup_sop
-| procmem_scanner | keychain | ljqCtrl_sop+.py | tmwebdriver_sop | autonomous_operation_sop | scheduled_task_sop | vision_sop | adb_ui.py
+| procmem_scanner | keychain | ljqCtrl_sop+.py | tmwebdriver_sop | autonomous_operation_sop | scheduled_task_sop | vision_sop | adb_ui.py | project_mode_sop
 L4: L4_raw_sessions/ historical sessions
 
 Browser special ops: tmwebdriver_sop(file upload/image search/PDF blob/physical coords/HttpOnly Cookie/autofill bypass/cross-origin iframe/CDP/cross-tab)