Auth screens: equal-weight buttons for Request access / Sign up / Sign in

[mbmorote]

Summary

• Replaced the small text links at the bottom of the Sign In, Create account, and Request access forms with a consistent pair of tinted-fill buttons (soft accent background, muted question text + accent-colored action word).
• Goal: the "no invite code yet" path (Request access) reads as an equally valid, easy-to-tap action instead of a buried afterthought link, without going as heavy as a solid outlined button.
• Same pattern applied across all three sub-views for consistency (LoginForm.tsx, SignupForm.tsx).

Test plan

• Open / (or click "Log in") → Sign In modal shows two tinted buttons at the bottom: "Don't have one? Request access" / "Have an invite code? Sign up"
• Click "Have an invite code? Sign up" → switches to Create account form; bottom shows "Don't have an invite code? Request access" / "Already have an account? Sign in"
• Click "Request access" from Sign In or "Get started — ask for an invite" → Request access form; bottom shows "Have an invite code? Sign up" / "Already have an account? Sign in"
• Standalone /login and /signup pages (non-modal) render the same buttons and link correctly (no onSwitchTo* handlers, plain <Link>s)
• No change to default sub-mode/behavior — only the bottom link styling changed

🤖 Generated with Claude Code

https://claude.ai/code/session_01MRdDUELqiZ26PxiEH64kgt