v4: users sign in to one gerbeur instance with their account on another — topic instances, each with its own admins, domain and data, had no way to share accounts. Sign-in is federated over a subset of OpenID Connect, the authorization code flow with PKCE: each instance is an identity provider for its own users and a client for the others', and signs what it tells them with an Ed25519 key kept in federation_keys and published at /.well-known/jwks.json, beside its metadata at /.well-known/openid-configuration. Only sign-in is federated: an account from another instance is a local users row linked to (issuer, subject) in user_identities, with no password (password_hash ''), so sessions, roles, permissions, the socket and every foreign key work as before.

A remote user is name@host here, in users.username, in paths (/@alice@music.example) and in mentions, through one handle rule in shared/validation.ts that paths, MENTION_RE and Markdown all build on; Markdown undoes GFM's email autolink of a handle. Their name, email and avatar come from their home at each sign-in and by its signed events (federation_outbox, delivered by the federation job with backoff): a rename at home leaves the old handle an alias here, and a password change or a withdrawn grant ends their sessions here. Their password, email, avatar and name can't change here (assertLocalUser), nor can they sign in elsewhere from here.

An admin keeps the trusted and blocked instances on /manage (federation:manage): a trusted instance's users sign in from a button on the login page, a blocked one's can't and are signed out at once, and any other's join with an invite from the register page. The /authorize page asks the user once per instance, and /settings lists the instances their account signs in to, each disconnectable; /login?next= brings a signed-out visitor back to /authorize. Emails stay unique among local accounts only, and migration 0024 adds the tables, makes that index partial and reserves authorize and federation as category slugs. remote/gerbeur-instance.ts is the only way to other instances: https and public addresses only, no redirects, no certificate fallback, unless GERBEUR_FEDERATION_ALLOW_PRIVATE lets two instances on one machine talk.

298 backend tests and 702 frontend tests pass, and deno check, deno fmt, deno lint, tsc, eslint, doc:lint and i18n:compile --strict are clean; checked end to end with two built instances on one machine: sign-in through the other's login and consent pages, consent skipped once granted and asked again after disconnecting, a rename and a password change at home reaching the other, and blocking; screenshots of the login, consent, profile, settings and manage pages at 1280 and 390px.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

locales/en.po

@@ -51,7 +51,7 @@ msgstr "{0} more online: {restNames}"
 
 #. placeholder {0}: VALIDATION.USERNAME_MIN
 #. placeholder {1}: VALIDATION.USERNAME_MAX
-#: src/pages/UserRegister.tsx:145
+#: src/pages/UserRegister.tsx:147
 msgid "{0}–{1} characters: letters, numbers, or underscores"
 msgstr "{0}–{1} characters: letters, numbers, or underscores"
 
@@ -280,6 +280,10 @@ msgstr "<0>{0}</0> upvoted <1>{1}</1>"
 msgid "<0>{0}</0> was added to <1>{1}</1>"
 msgstr "<0>{0}</0> was added to <1>{1}</1>"
 
+#: src/pages/Authorize.tsx:138
+msgid "<0>{name}</0> ({host}) asks to sign you in with your account here, <1>@{username}</1>. It will receive your username, your email address and your avatar."
+msgstr "<0>{name}</0> ({host}) asks to sign you in with your account here, <1>@{username}</1>. It will receive your username, your email address and your avatar."
+
 #: src/components/chat/ChatModal.tsx:778
 msgid "1 new message"
 msgstr "1 new message"
@@ -296,10 +300,14 @@ msgstr "A link is required"
 msgid "a post"
 msgstr "a post"
 
-#: src/pages/Settings.tsx:85
+#: src/pages/Settings.tsx:89
 msgid "Account"
 msgstr "Account"
 
+#: src/components/profile/ProfileHeader.tsx:144
+msgid "Account on <0>{host}</0>"
+msgstr "Account on <0>{host}</0>"
+
 #: src/components/comment/CommentThread.tsx:102
 msgid "Add a comment…"
 msgstr "Add a comment…"
@@ -309,7 +317,7 @@ msgstr "Add a comment…"
 msgid "Add category"
 msgstr "Add category"
 
-#: src/components/profile/ProfileHeader.tsx:153
+#: src/components/profile/ProfileHeader.tsx:173
 msgid "Add email…"
 msgstr "Add email…"
 
@@ -342,10 +350,14 @@ msgstr "All"
 msgid "Already dumped by {0} {1}"
 msgstr "Already dumped by {0} {1}"
 
-#: src/pages/UserRegister.tsx:175
+#: src/pages/UserRegister.tsx:179
 msgid "Already have an account? <0>Log in</0>"
 msgstr "Already have an account? <0>Log in</0>"
 
+#: src/components/federation/PeerManager.tsx:149
+msgid "An instance's address, like music.example"
+msgstr "An instance's address, like music.example"
+
 #: src/utils/shared/api.ts:35
 msgid "An unexpected error occurred."
 msgstr "An unexpected error occurred."
@@ -355,14 +367,14 @@ msgstr "An unexpected error occurred."
 msgid "email.digest.andMore"
 msgstr "and {n} more"
 
-#: src/pages/Settings.tsx:101
+#: src/pages/Settings.tsx:134
 msgid "Appearance"
 msgstr "Appearance"
 
 #. placeholder {0}: VALIDATION.PASSWORD_MIN
 #: src/components/profile/ChangePasswordModal.tsx:101
 #: src/pages/ResetPassword.tsx:124
-#: src/pages/UserRegister.tsx:164
+#: src/pages/UserRegister.tsx:166
 msgid "At least {0} characters"
 msgstr "At least {0} characters"
 
@@ -370,7 +382,7 @@ msgstr "At least {0} characters"
 msgid "At most {maxLength} characters."
 msgstr "At most {maxLength} characters."
 
-#: src/pages/Settings.tsx:46
+#: src/pages/Settings.tsx:48
 msgid "Auto"
 msgstr "Auto"
 
@@ -379,6 +391,18 @@ msgstr "Auto"
 msgid "Back to login"
 msgstr "Back to login"
 
+#: src/pages/FederationCallback.tsx:66
+msgid "Back to the login page"
+msgstr "Back to the login page"
+
+#: src/components/federation/PeerManager.tsx:163
+msgid "Block"
+msgstr "Block"
+
+#: src/components/federation/PeerManager.tsx:33
+msgid "Blocked"
+msgstr "Blocked"
+
 #. js-lingui-explicit-id
 #: api/mail/digest.ts:225
 msgid "email.digest.by"
@@ -394,6 +418,11 @@ msgstr "by @{username} · {n, plural, one {# dump} other {# dumps}}"
 msgid "Can't connect to the live updates server. Upvotes and notifications may not sync until it reconnects."
 msgstr "Can't connect to the live updates server. Upvotes and notifications may not sync until it reconnects."
 
+#: src/pages/Authorize.tsx:117
+#: src/pages/Authorize.tsx:145
+msgid "Can't sign in there"
+msgstr "Can't sign in there"
+
 #: src/components/category/CategoryManager.tsx:225
 #: src/components/category/CategoryManager.tsx:226
 #: src/components/chat/ChatEditBox.tsx:92
@@ -404,6 +433,7 @@ msgstr "Can't connect to the live updates server. Upvotes and notifications may
 #: src/components/profile/DescriptionEditor.tsx:97
 #: src/components/profile/EmailEditor.tsx:83
 #: src/components/shared/ConfirmModal.tsx:63
+#: src/pages/Authorize.tsx:158
 #: src/pages/Dump.tsx:445
 #: src/pages/DumpEdit.tsx:565
 msgid "Cancel"
@@ -423,7 +453,7 @@ msgid "Cancel search"
 msgstr "Cancel search"
 
 #: src/components/category/CategorySelect.tsx:33
-#: src/pages/Manage.tsx:30
+#: src/pages/Manage.tsx:36
 msgid "Categories"
 msgstr "Categories"
 
@@ -431,7 +461,7 @@ msgstr "Categories"
 msgid "Category"
 msgstr "Category"
 
-#: src/components/profile/ProfileHeader.tsx:95
+#: src/components/profile/ProfileHeader.tsx:102
 msgid "Change avatar"
 msgstr "Change avatar"
 
@@ -439,12 +469,16 @@ msgstr "Change avatar"
 msgid "Change image"
 msgstr "Change image"
 
+#: src/pages/Settings.tsx:101
+msgid "Change it on {home}"
+msgstr "Change it on {home}"
+
 #: src/components/profile/ChangePasswordModal.tsx:66
 #: src/components/profile/ChangePasswordModal.tsx:120
 msgid "Change password"
 msgstr "Change password"
 
-#: src/pages/Settings.tsx:96
+#: src/pages/Settings.tsx:112
 msgid "Change password…"
 msgstr "Change password…"
 
@@ -464,10 +498,14 @@ msgstr "Chat"
 msgid "Chat ({unreadChatCount} unread)"
 msgstr "Chat ({unreadChatCount} unread)"
 
-#: src/pages/UserRegister.tsx:106
+#: src/pages/UserRegister.tsx:108
 msgid "Checking invite…"
 msgstr "Checking invite…"
 
+#: src/components/federation/PeerManager.tsx:154
+msgid "Checking…"
+msgstr "Checking…"
+
 #: src/components/profile/ChangePasswordModal.tsx:75
 #: src/components/shared/Modal.tsx:76
 msgid "Close"
@@ -493,7 +531,7 @@ msgstr "Close without posting? The attached file won't be kept — everything yo
 msgid "Collapse player"
 msgstr "Collapse player"
 
-#: src/pages/Settings.tsx:110
+#: src/pages/Settings.tsx:143
 msgid "Color scheme"
 msgstr "Color scheme"
 
@@ -507,10 +545,22 @@ msgstr "Community"
 msgid "Confirm new password"
 msgstr "Confirm new password"
 
+#: src/components/federation/FederatedSignIn.tsx:111
+msgid "Connecting…"
+msgstr "Connecting…"
+
 #: src/contexts/ws/WSProvider.tsx:757
 msgid "Connection lost — this message may not have been sent"
 msgstr "Connection lost — this message may not have been sent"
 
+#: src/components/federation/FederatedSignIn.tsx:113
+msgid "Continue"
+msgstr "Continue"
+
+#: src/pages/Authorize.tsx:155
+msgid "Continue as @{username}"
+msgstr "Continue as @{username}"
+
 #: src/components/profile/ProfileOwnActions.tsx:99
 msgid "Copied!"
 msgstr "Copied!"
@@ -540,6 +590,10 @@ msgstr "Could not rename"
 msgid "Could not save"
 msgstr "Could not save"
 
+#: src/components/federation/PeerManager.tsx:146
+msgid "Couldn't add that instance"
+msgstr "Couldn't add that instance"
+
 #: src/components/dump/create/DumpCreateModal.tsx:607
 msgid "Couldn't load a preview for this link — check it, or post it as-is and refresh the preview later."
 msgstr "Couldn't load a preview for this link — check it, or post it as-is and refresh the preview later."
@@ -548,6 +602,10 @@ msgstr "Couldn't load a preview for this link — check it, or post it as-is and
 msgid "Couldn't load the chat."
 msgstr "Couldn't load the chat."
 
+#: src/components/federation/FederatedSignIn.tsx:102
+msgid "Couldn't reach that instance"
+msgstr "Couldn't reach that instance"
+
 #: src/pages/Unsubscribe.tsx:116
 msgid "Couldn't unsubscribe"
 msgstr "Couldn't unsubscribe"
@@ -576,11 +634,11 @@ msgstr "Creating…"
 msgid "Current password"
 msgstr "Current password"
 
-#: src/pages/Settings.tsx:48
+#: src/pages/Settings.tsx:50
 msgid "Dark"
 msgstr "Dark"
 
-#: src/pages/Settings.tsx:121
+#: src/pages/Settings.tsx:154
 msgid "Default tab"
 msgstr "Default tab"
 
@@ -655,6 +713,10 @@ msgstr "Description (optional)"
 msgid "Discard"
 msgstr "Discard"
 
+#: src/components/federation/GrantList.tsx:84
+msgid "Disconnect"
+msgstr "Disconnect"
+
 #: src/components/chat/ChatModal.tsx:743
 msgid "Disconnected — reconnecting…"
 msgstr "Disconnected — reconnecting…"
@@ -730,7 +792,7 @@ msgstr "Edit {0}"
 msgid "Edit description"
 msgstr "Edit description"
 
-#: src/components/profile/ProfileHeader.tsx:151
+#: src/components/profile/ProfileHeader.tsx:171
 msgid "Edit email"
 msgstr "Edit email"
 
@@ -772,11 +834,11 @@ msgstr "Editing"
 msgid "Editing {0}"
 msgstr "Editing {0}"
 
-#: src/pages/Settings.tsx:145
+#: src/pages/Settings.tsx:178
 msgid "Email"
 msgstr "Email"
 
-#: src/pages/UserRegister.tsx:152
+#: src/pages/UserRegister.tsx:154
 msgid "Email address"
 msgstr "Email address"
 
@@ -822,6 +884,8 @@ msgstr "Failed to post comment"
 msgid "Failed to post reply"
 msgstr "Failed to post reply"
 
+#: src/components/federation/GrantList.tsx:98
+#: src/components/federation/PeerManager.tsx:143
 #: src/components/playlist/PlaylistEditForm.tsx:185
 #: src/components/profile/DescriptionEditor.tsx:99
 #: src/components/profile/EmailEditor.tsx:86
@@ -836,7 +900,7 @@ msgstr "Failed to save category"
 msgid "Failed to save edit"
 msgstr "Failed to save edit"
 
-#: src/components/profile/ProfileHeader.tsx:162
+#: src/components/profile/ProfileHeader.tsx:182
 msgid "Failed to update avatar"
 msgstr "Failed to update avatar"
 
@@ -844,7 +908,7 @@ msgstr "Failed to update avatar"
 msgid "Failed to update role"
 msgstr "Failed to update role"
 
-#: src/pages/Settings.tsx:119
+#: src/pages/Settings.tsx:152
 msgid "Feeds"
 msgstr "Feeds"
 
@@ -879,7 +943,7 @@ msgstr "Follow some users to see their dumps here."
 
 #: src/components/feed/FeedTabBar.tsx:43
 #: src/components/profile/ProfileFollowTab.tsx:140
-#: src/pages/Settings.tsx:55
+#: src/pages/Settings.tsx:57
 #: src/pages/UserPublicProfile.tsx:161
 msgid "Followed"
 msgstr "Followed"
@@ -894,7 +958,7 @@ msgstr "Following"
 msgid "email.digest.forYou"
 msgstr "For you"
 
-#: src/pages/UserLogin.tsx:97
+#: src/pages/UserLogin.tsx:101
 msgid "Forgot password?"
 msgstr "Forgot password?"
 
@@ -929,11 +993,11 @@ msgid "email.reset.hi"
 msgstr "Hi {username},"
 
 #: src/components/feed/FeedTabBar.tsx:39
-#: src/pages/Settings.tsx:52
+#: src/pages/Settings.tsx:54
 msgid "Hot"
 msgstr "Hot"
 
-#: src/pages/UserLogin.tsx:136
+#: src/pages/UserLogin.tsx:142
 msgid "If that address is registered you'll receive a reset link shortly."
 msgstr "If that address is registered you'll receive a reset link shortly."
 
@@ -965,7 +1029,11 @@ msgstr "In the chat"
 msgid "Insert emoji"
 msgstr "Insert emoji"
 
-#: src/pages/UserRegister.tsx:117
+#: src/pages/Manage.tsx:43
+msgid "Instances"
+msgstr "Instances"
+
+#: src/pages/UserRegister.tsx:119
 msgid "Invalid invite"
 msgstr "Invalid invite"
 
@@ -979,7 +1047,7 @@ msgstr "Invalid link"
 msgid "Invite link"
 msgstr "Invite link"
 
-#: src/components/profile/ProfileHeader.tsx:116
+#: src/components/profile/ProfileHeader.tsx:126
 msgid "invited by"
 msgstr "invited by"
 
@@ -998,8 +1066,12 @@ msgstr "invited by you"
 msgid "Invitees"
 msgstr "Invitees"
 
+#: src/components/federation/FederatedSignIn.tsx:105
+msgid "Its address, like music.example"
+msgstr "Its address, like music.example"
+
 #: src/components/feed/FeedTabBar.tsx:41
-#: src/pages/Settings.tsx:54
+#: src/pages/Settings.tsx:56
 msgid "Journal"
 msgstr "Journal"
 
@@ -1007,11 +1079,16 @@ msgstr "Journal"
 msgid "Keep editing"
 msgstr "Keep editing"
 
+#. placeholder {0}: relativeTime(grant.lastUsedAt)
+#: src/components/federation/GrantList.tsx:77
+msgid "last used {0}"
+msgstr "last used {0}"
+
 #: src/components/profile/UsernameField.tsx:59
 msgid "Letters, numbers and underscores only"
 msgstr "Letters, numbers and underscores only"
 
-#: src/pages/Settings.tsx:47
+#: src/pages/Settings.tsx:49
 msgid "Light"
 msgstr "Light"
 
@@ -1068,17 +1145,20 @@ msgstr "Loading profile…"
 #: src/components/category/CategoryManager.tsx:60
 #: src/components/chat/ChatModal.tsx:763
 #: src/components/editor/EmojiPickerPopup.tsx:125
+#: src/components/federation/PeerManager.tsx:108
 #: src/components/playlist/PlaylistMembershipPanel.tsx:45
 #: src/components/shared/ListState.tsx:38
 #: src/components/shared/LoadMoreButton.tsx:32
 #: src/components/social/UserListPopover.tsx:151
+#: src/pages/Authorize.tsx:122
 msgid "Loading…"
 msgstr "Loading…"
 
 #: src/components/layout/AppHeader.tsx:208
-#: src/pages/UserLogin.tsx:41
-#: src/pages/UserLogin.tsx:67
-#: src/pages/UserLogin.tsx:86
+#: src/pages/FederationCallback.tsx:31
+#: src/pages/UserLogin.tsx:44
+#: src/pages/UserLogin.tsx:71
+#: src/pages/UserLogin.tsx:90
 msgid "Log in"
 msgstr "Log in"
 
@@ -1090,16 +1170,22 @@ msgstr "Log in to like"
 msgid "Log in to vote"
 msgstr "Log in to vote"
 
-#: src/components/layout/UserMenu.tsx:126
+#. placeholder {0}: peer.name ?? peer.host
+#: src/components/federation/FederatedSignIn.tsx:97
+msgid "Log in with {0}"
+msgstr "Log in with {0}"
+
+#: src/components/layout/UserMenu.tsx:127
 #: src/pages/UserPublicProfile.tsx:131
 msgid "Log out"
 msgstr "Log out"
 
-#: src/pages/UserLogin.tsx:85
+#: src/pages/UserLogin.tsx:89
 msgid "Logging in…"
 msgstr "Logging in…"
 
-#: src/pages/UserLogin.tsx:72
+#: src/pages/FederationCallback.tsx:63
+#: src/pages/UserLogin.tsx:76
 msgid "Login failed"
 msgstr "Login failed"
 
@@ -1107,9 +1193,9 @@ msgstr "Login failed"
 msgid "Lowercase letters, numbers and single hyphens only"
 msgstr "Lowercase letters, numbers and single hyphens only"
 
-#: src/components/layout/UserMenu.tsx:113
-#: src/pages/Manage.tsx:24
-#: src/pages/Manage.tsx:29
+#: src/components/layout/UserMenu.tsx:114
+#: src/pages/Manage.tsx:27
+#: src/pages/Manage.tsx:34
 #: src/pages/UserPublicProfile.tsx:164
 msgid "Manage"
 msgstr "Manage"
@@ -1138,7 +1224,7 @@ msgstr "Name"
 
 #: src/components/chat/ChatModal.tsx:692
 #: src/components/feed/FeedTabBar.tsx:40
-#: src/pages/Settings.tsx:53
+#: src/pages/Settings.tsx:55
 msgid "New"
 msgstr "New"
 
@@ -1231,6 +1317,10 @@ msgstr "No users match \"{q}\"."
 msgid "Not following anyone yet."
 msgstr "Not following anyone yet."
 
+#: src/pages/Authorize.tsx:103
+msgid "Not from here"
+msgstr "Not from here"
+
 #: src/pages/Community.tsx:127
 msgid "Nothing happened this month."
 msgstr "Nothing happened this month."
@@ -1248,7 +1338,7 @@ msgstr "Nothing here yet."
 #: src/components/layout/NotificationBell.tsx:57
 #: src/pages/Notifications.tsx:387
 #: src/pages/Notifications.tsx:505
-#: src/pages/Settings.tsx:130
+#: src/pages/Settings.tsx:163
 msgid "Notifications"
 msgstr "Notifications"
 
@@ -1256,11 +1346,11 @@ msgstr "Notifications"
 msgid "Notifications ({unreadNotificationCount} unread)"
 msgstr "Notifications ({unreadNotificationCount} unread)"
 
-#: src/pages/Settings.tsx:60
+#: src/pages/Settings.tsx:62
 msgid "Off"
 msgstr "Off"
 
-#: src/pages/Settings.tsx:59
+#: src/pages/Settings.tsx:61
 msgid "On"
 msgstr "On"
 
@@ -1300,6 +1390,18 @@ msgstr "Open the chat"
 msgid "or <0>browse files</0>"
 msgstr "or <0>browse files</0>"
 
+#: src/components/federation/FederatedSignIn.tsx:82
+msgid "Or join with your account on another gerbeur"
+msgstr "Or join with your account on another gerbeur"
+
+#: src/components/federation/FederatedSignIn.tsx:83
+msgid "Or log in with your account on another gerbeur"
+msgstr "Or log in with your account on another gerbeur"
+
+#: src/pages/Settings.tsx:128
+msgid "Other instances"
+msgstr "Other instances"
+
 #: src/pages/UserPublicProfile.tsx:157
 msgid "Overview"
 msgstr "Overview"
@@ -1308,13 +1410,14 @@ msgstr "Overview"
 msgid "Page not found"
 msgstr "Page not found"
 
-#: src/pages/Settings.tsx:90
-#: src/pages/UserLogin.tsx:82
+#: src/pages/Settings.tsx:96
+#: src/pages/Settings.tsx:106
+#: src/pages/UserLogin.tsx:86
 msgid "Password"
 msgstr "Password"
 
 #. placeholder {0}: VALIDATION.PASSWORD_MIN
-#: src/pages/UserRegister.tsx:158
+#: src/pages/UserRegister.tsx:160
 msgid "Password (min. {0} characters)"
 msgstr "Password (min. {0} characters)"
 
@@ -1416,17 +1519,17 @@ msgstr "Refreshing stream…"
 msgid "Refreshing…"
 msgstr "Refreshing…"
 
-#: src/pages/UserRegister.tsx:45
-#: src/pages/UserRegister.tsx:129
-#: src/pages/UserRegister.tsx:169
+#: src/pages/UserRegister.tsx:47
+#: src/pages/UserRegister.tsx:131
+#: src/pages/UserRegister.tsx:171
 msgid "Register"
 msgstr "Register"
 
-#: src/pages/UserRegister.tsx:168
+#: src/pages/UserRegister.tsx:170
 msgid "Registering…"
 msgstr "Registering…"
 
-#: src/pages/UserRegister.tsx:134
+#: src/pages/UserRegister.tsx:136
 msgid "Registration failed"
 msgstr "Registration failed"
 
@@ -1434,6 +1537,12 @@ msgstr "Registration failed"
 msgid "Related"
 msgstr "Related"
 
+#. placeholder {0}: peer.host
+#: src/components/federation/PeerManager.tsx:133
+#: src/components/federation/PeerManager.tsx:134
+msgid "Remove {0}"
+msgstr "Remove {0}"
+
 #: src/components/form/FileDropZone.tsx:139
 msgid "Remove file"
 msgstr "Remove file"
@@ -1472,7 +1581,7 @@ msgstr "Reply"
 msgid "Replying to"
 msgstr "Replying to"
 
-#: src/pages/UserLogin.tsx:148
+#: src/pages/UserLogin.tsx:154
 msgid "Request failed"
 msgstr "Request failed"
 
@@ -1579,12 +1688,12 @@ msgstr "Seek"
 msgid "Send"
 msgstr "Send"
 
-#: src/pages/UserLogin.tsx:157
+#: src/pages/UserLogin.tsx:163
 msgid "Send reset link"
 msgstr "Send reset link"
 
 #: src/components/chat/PendingItem.tsx:104
-#: src/pages/UserLogin.tsx:156
+#: src/pages/UserLogin.tsx:162
 msgid "Sending…"
 msgstr "Sending…"
 
@@ -1603,8 +1712,8 @@ msgid "email.settings"
 msgstr "Settings"
 
 #: src/components/layout/UserMenu.tsx:104
-#: src/pages/Settings.tsx:72
-#: src/pages/Settings.tsx:84
+#: src/pages/Settings.tsx:75
+#: src/pages/Settings.tsx:88
 msgid "Settings"
 msgstr "Settings"
 
@@ -1612,6 +1721,19 @@ msgstr "Settings"
 msgid "Several people are typing…"
 msgstr "Several people are typing…"
 
+#: src/pages/Authorize.tsx:37
+msgid "Sign in elsewhere"
+msgstr "Sign in elsewhere"
+
+#: src/pages/Authorize.tsx:135
+msgid "Sign in to {name}?"
+msgstr "Sign in to {name}?"
+
+#: src/pages/Authorize.tsx:154
+#: src/pages/FederationCallback.tsx:73
+msgid "Signing you in…"
+msgstr "Signing you in…"
+
 #: src/components/profile/ProfileOwnActions.tsx:102
 msgid "Single use, valid for 7 days."
 msgstr "Single use, valid for 7 days."
@@ -1636,7 +1758,7 @@ msgstr "Someone asked to reset the password of your {site} account. The button b
 msgid "Something went wrong"
 msgstr "Something went wrong"
 
-#: src/pages/Settings.tsx:132
+#: src/pages/Settings.tsx:165
 msgid "Sounds"
 msgstr "Sounds"
 
@@ -1644,7 +1766,7 @@ msgstr "Sounds"
 msgid "Start fresh"
 msgstr "Start fresh"
 
-#: src/pages/Settings.tsx:103
+#: src/pages/Settings.tsx:136
 msgid "Style"
 msgstr "Style"
 
@@ -1696,11 +1818,11 @@ msgstr "The new order couldn't be saved. Try again."
 msgid "This comment couldn't be deleted. Try again."
 msgstr "This comment couldn't be deleted. Try again."
 
-#: src/pages/UserRegister.tsx:118
+#: src/pages/UserRegister.tsx:120
 msgid "This invite link is missing, expired, or already used."
 msgstr "This invite link is missing, expired, or already used."
 
-#: src/pages/UserLogin.tsx:104
+#: src/pages/UserLogin.tsx:110
 msgid "This is a mirage."
 msgstr "This is a mirage."
 
@@ -1716,7 +1838,11 @@ msgstr "This page does not exist."
 msgid "This reset link is missing or malformed."
 msgstr "This reset link is missing or malformed."
 
-#: src/pages/Settings.tsx:168
+#: src/pages/FederationCallback.tsx:38
+msgid "This sign-in link is incomplete."
+msgstr "This sign-in link is incomplete."
+
+#: src/pages/Settings.tsx:201
 msgid "This site doesn't send email, so no digest goes out."
 msgstr "This site doesn't send email, so no digest goes out."
 
@@ -1763,6 +1889,14 @@ msgstr "Top this week"
 msgid "Track {0}"
 msgstr "Track {0}"
 
+#: src/components/federation/PeerManager.tsx:155
+msgid "Trust"
+msgstr "Trust"
+
+#: src/components/federation/PeerManager.tsx:32
+msgid "Trusted"
+msgstr "Trusted"
+
 #: src/components/chat/ChatModal.tsx:668
 msgid "Try again"
 msgstr "Try again"
@@ -1826,7 +1960,7 @@ msgstr "Unsubscribed"
 msgid "email.digest.upload"
 msgstr "upload"
 
-#: src/components/profile/ProfileHeader.tsx:72
+#: src/components/profile/ProfileHeader.tsx:79
 msgid "Upload failed"
 msgstr "Upload failed"
 
@@ -1883,9 +2017,9 @@ msgstr "User menu"
 
 #: src/components/profile/ProfileManageTab.tsx:61
 #: src/components/profile/UsernameField.tsx:51
-#: src/pages/Settings.tsx:87
-#: src/pages/UserLogin.tsx:75
-#: src/pages/UserRegister.tsx:137
+#: src/pages/Settings.tsx:91
+#: src/pages/UserLogin.tsx:79
+#: src/pages/UserRegister.tsx:139
 msgid "Username"
 msgstr "Username"
 
@@ -1894,6 +2028,10 @@ msgstr "Username"
 msgid "Users"
 msgstr "Users"
 
+#: src/components/federation/PeerManager.tsx:169
+msgid "Users of a trusted instance sign in here with their account there. Those of a blocked one can't. Users of any other instance need an invite."
+msgstr "Users of a trusted instance sign in here with their account there. Those of a blocked one can't. Users of any other instance need an invite."
+
 #: src/components/profile/ProfileSection.tsx:43
 msgid "View all →"
 msgstr "View all →"
@@ -1952,6 +2090,10 @@ msgstr "Yesterday"
 msgid "You can post it anyway."
 msgstr "You can post it anyway."
 
+#: src/components/federation/GrantList.tsx:93
+msgid "You haven't signed in to another gerbeur with this account yet."
+msgstr "You haven't signed in to another gerbeur with this account yet."
+
 #: src/pages/Unsubscribe.tsx:94
 msgid "You won't get the monthly recap any more. You can turn it back on in your settings."
 msgstr "You won't get the monthly recap any more. You can turn it back on in your settings."
@@ -1997,7 +2139,15 @@ msgstr "You've reached the end."
 msgid "email.welcome.preheader"
 msgstr "Your account is ready."
 
-#: src/pages/UserLogin.tsx:152
+#: src/pages/Authorize.tsx:104
+msgid "Your account lives on {home}: sign in to other instances from there."
+msgstr "Your account lives on {home}: sign in to other instances from there."
+
+#: src/pages/Settings.tsx:119
+msgid "Your account lives on {home}: your password, email address, avatar and username change there."
+msgstr "Your account lives on {home}: your password, email address, avatar and username change there."
+
+#: src/pages/UserLogin.tsx:158
 msgid "Your email address"
 msgstr "Your email address"