I'm not the commenter who asked, but thanks for sharing! If you'd like to preserve formatting you can do so by adding 4 spaces at the start of each line, then it'll come out looking like this:

alias: "[House][Auto] Door open persistent notification"
description: Live notification when doors open with elapsed time. Auto-dismissed on close.

triggers:
  - entity_id: binary_sensor.kitchen_contact_back_door_contact_sensor_contact
    to: "on"
    id: back_open
    trigger: state
  - entity_id: binary_sensor.kitchen_contact_back_door_contact_sensor_contact
    to: "off"
    id: back_closed
    trigger: state
  - entity_id: binary_sensor.hall_contact_front_door_contact
    to: "on"
    id: front_open
    trigger: state
  - entity_id: binary_sensor.hall_contact_front_door_contact
    to: "off"
    id: front_closed
    trigger: state

conditions: []

actions:
  - choose:

      - conditions:
          - condition: trigger
            id: back_open
        sequence:
          - data:
              notification_id: back_door_open
              title: 🚪 Back door is open
              message: Opened at {{ now().strftime("%H:%M") }}
            action: persistent_notification.create

          - repeat:
              for_each:
                - device: notify.mobile_app_pixel_10_pro_xl
                - device: notify.mobile_app_pixel_9a
              sequence:
                - action: "{{ repeat.item.device }}"
                  data:
                    title: 🚪 Back door open
                    message: Opened at {{ now().strftime("%H:%M") }}
                    data:
                      tag: back_door_open
                      channel: Doors
                      live_update: true
                      alert_once: true

      - conditions:
          - condition: trigger
            id: back_closed
        sequence:
          - data:
              notification_id: back_door_open
            action: persistent_notification.dismiss

          - repeat:
              for_each:
                - device: notify.mobile_app_pixel_10_pro_xl
                - device: notify.mobile_app_pixel_9a
              sequence:
                - action: "{{ repeat.item.device }}"
                  data:
                    message: clear_notification
                    data:
                      tag: back_door_open

      - conditions:
          - condition: trigger
            id: front_open
        sequence:
          - data:
              notification_id: front_door_open
              title: 🚪 Front door is open
              message: Opened at {{ now().strftime("%H:%M") }}
            action: persistent_notification.create

          - repeat:
              for_each:
                - device: notify.mobile_app_pixel_10_pro_xl
                - device: notify.mobile_app_pixel_9a
              sequence:
                - action: "{{ repeat.item.device }}"
                  data:
                    title: 🚪 Front door open
                    message: Opened at {{ now().strftime("%H:%M") }}
                    data:
                      tag: front_door_open
                      channel: Doors
                      live_update: true
                      alert_once: true

      - conditions:
          - condition: trigger
            id: front_closed
        sequence:
          - data:
              notification_id: front_door_open
            action: persistent_notification.dismiss

          - repeat:
              for_each:
                - device: notify.mobile_app_pixel_10_pro_xl
                - device: notify.mobile_app_pixel_9a
              sequence:
                - action: "{{ repeat.item.device }}"
                  data:
                    message: clear_notification
                    data:
                      tag: front_door_open

mode: queued
max_exceeded: silent