Portal v0.6.15: invites with their own mail, for invites to a conversation

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01GT37Z1Xtfd9pUuQtMTg6Yt

.gitea/workflows/deploy.yml

@@ -18,7 +18,7 @@ on:
       - .gitea/workflows/deploy.yml
 
 env:
-  PORTAL_RELEASE: v0.5.2
+  PORTAL_RELEASE: v0.6.15
   INSTANCE: uhhm-portal
 
 jobs:

.gitea/workflows/lint-and-reload.yml

@@ -20,7 +20,7 @@ jobs:
       # this site runs (PORTAL_RELEASE in deploy.yml).
       - name: Lint questions
         env:
-          IRIS_RELEASE: v0.5.2
+          IRIS_RELEASE: v0.6.15
         run: |
           # The checkout is on a noexec mount for this runner; the cargo
           # target dir is where it may run what it fetched.