What is the Mirror?
The Mirror is where you can see what the system notices in you. Everything here is a hypothesis, not a verdict — look at yourself, nod, or shake your head.
Echo is reflection on your entries: a warm look at the day, a calmer one at the whole week. The Portrait goes further — what settled out of those days into a picture of you, told in a few paragraphs, with the last week's changes at the top.
Under every paragraph of the Portrait you can see what it came from. The full list of observations opens from the bottom of it; there you confirm, correct or remove anything that does not sound like you. A pattern from Echo that you find accurate can become one of those observations. Your entries in full live in the Journal.

Echo
Reflection on your entries: a warm look at the day, a calmer one at the week.
Portrait
What settled out of those days into a picture of you, told in paragraphs — each with its evidence underneath.