Add admin bypass in `hasPermission` composable to prevent FE lockout

[cstns]

Description

Context / Problem
Current hasPermission(scope, teamMembership, context) can deny admins when application-level roles are lower than team role. This risks locking out admins in the UI. Add an early return that grants all permissions if teamMembership.role === 'admin' (or equivalent numeric) or user.admin === true (from the account store).

Acceptance criteria

• hasPermission returns true immediately when:
  • teamMembership.role is admin, or
  • user.admin === true.
• Bypass applies before any application-level role checks or feature-flag logic.
• Non-admin behavior remains unchanged, including application-scoped role resolution.
• No server-side authorization changes. FE-only safeguard.

Epic/Story

No response

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