feat(portal): refine account identity controls

design/us-005-user-dashboard.md

@@ -3,7 +3,7 @@ type: User Story
 title: Manage linked accounts from the dashboard
 description: Authenticated users maintain their profile and active Java Edition accounts.
 tags: [player, dashboard, minecraft, profile]
-timestamp: 2026-08-01T18:43:58Z
+timestamp: 2026-08-01T22:04:17Z
 story_id: US-005
 status: verified
 ---
@@ -20,7 +20,7 @@ As a registered player, I want to manage my profile and linked Minecraft account
 - [x] The user can soft-remove an active account.
 - [x] The user can choose exactly one active primary account.
 - [x] Removing a primary account promotes another active account when one exists.
-- [x] Name and primary changes show the expected Discord nickname and require confirmation.
+- [x] Name and primary changes preview the expected Discord nickname and require explicit confirmation before either profile mutation occurs.
 - [x] The dashboard shows recent portal and game IP observations with classification and available location.
 - [x] The user can revoke the current session by signing out.
 
@@ -32,7 +32,7 @@ As a registered player, I want to manage my profile and linked Minecraft account
 
 # Validation
 
-Server actions verify the current session and constrain every account lookup by the authenticated user ID.
+Server actions verify the current session, constrain every account lookup by the authenticated user ID, and require the explicit Discord confirmation field before name or primary-account mutations. Confirmation parsing is covered by [`apps/web/src/lib/dashboard-change-confirmation.test.ts`](../apps/web/src/lib/dashboard-change-confirmation.test.ts).
 
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