fix(rust): say when and where an account was linked, as the website's row does

Found by the emulator walk, not by the suite: the app's row carried the
name and the Steam id and stopped there, while the website's says "linked
just now on rust-oxide". Neither fact is part of the identity — a link is
fleet-wide — but which server minted the code is where a support
conversation starts, and the module's own schema comment says so.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01PMH6bw1jXMgbyF3ZWGEzSM

app/src/main/java/com/runicgateway/app/ui/rust/RustAccountScreen.kt

@@ -188,6 +188,23 @@ private fun LinkRow(link: RustLinkDto, busy: Boolean, onUnlink: () -> Unit) {
                     style = MaterialTheme.typography.bodySmall,
                     color = MaterialTheme.colorScheme.onSurfaceVariant,
                 )
+
+                // When, and which server minted the code. Not part of the
+                // identity — a link is fleet-wide — but it is where a support
+                // conversation starts, and the website's own row says it.
+                val when_ = rustAgo(link.linkedAt)
+                val where = link.serverId?.takeIf { it.isNotBlank() }
+
+                if (when_ != null || where != null) {
+                    Text(
+                        text = listOfNotNull(
+                            when_?.let { stringResource(R.string.rust_account_linked_when, it) },
+                            where,
+                        ).joinToString(" · "),
+                        style = MaterialTheme.typography.bodySmall,
+                        color = MaterialTheme.colorScheme.onSurfaceVariant,
+                    )
+                }
             }
 
             TextButton(onClick = onUnlink, enabled = !busy) {

app/src/main/res/values/strings.xml

@@ -621,6 +621,7 @@
     <string name="rust_link_error">Could not link that code.</string>
     <string name="rust_unlink_action">Unlink</string>
     <string name="rust_unlink_error">Could not unlink that account.</string>
+    <string name="rust_account_linked_when">linked %1$s</string>
     <string name="rust_account_none">No Steam account is linked to this profile yet.</string>
     <string name="rust_account_fleet_note">A link covers every server this community runs — a Steam account is one person wherever they play. You can also type /unlink in game.</string>
     <string name="rust_held_title">What you can do in game</string>