guest-access.md: dashboard self-serve invites replace the email path, note awaiting-setup state and credit return on cancel

guest-access.md

@@ -7,9 +7,14 @@ only once.
 
 ## How to send guest access
 
-Email [info@inference.coop](mailto:info@inference.coop) with your friend's
-name and email address. They get an **invitation email** from the co-op,
-naming you, with a link to set up their account — it takes about a minute.
+On your [dashboard](https://dashboard.inference.coop), open the **Guests**
+card, enter your friend's email address (name optional), and click
+**Send invite**. There's no approval step: the account is provisioned right
+away, and your friend gets an **invitation email** from the co-op, naming
+you, with a link to set up their account. Setting it up takes about a minute.
+
+New guests show as **Invited — awaiting setup** until they accept it. The
+card also lists the guests you've sent.
 
 ## What your guest gets
 
@@ -27,7 +32,7 @@ Guest access is not membership — no Matrix, governance forum, or vote.
 When **the $2 is spent or the 60 days are up**, whichever comes first, your
 friend gets an email saying so. Access stops; **the account and its data are
 kept** — and a guest can end it early with the **Cancel guest access** link
-on their dashboard.
+on their dashboard, returning any unspent credit to the co-op.
 
 ## Becoming a member