702fe9e134
Replace the OpPlaceholder stub at /settings with a three-card account page: - Profile: name, email, subject ID, deduped group chips (Authentik returns each group twice; dedupe in the computed). Last sign-in derived from JWT iat via the existing /api/_verify-token endpoint. - Security: three deep links to Authentik's user settings — change password, manage MFA devices, active sessions. We don't re-implement identity here; Authentik already has a polished UI for it. - Appearance: theme / density / env segmented controls. Shares the useTweaks composable with the floating Tweaks panel, so flipping here is reflected there and vice-versa.