[Agent] /feedback/new ignores anonymous auth_mode

Agent brief

Category: bug | Severity: critical | Effort: S

Problem

/feedback/new always redirects to sign-in when no session, ignoring project.auth_mode of anonymous or optional. Only the embed iframe calls signInAnonymously().

Repro

1. Settings → Login & SSO → set Anonymous or Optional
2. Log out, visit /{slug}/feedback/new
3. Forced redirect to login instead of anonymous session

Files

• src/app/[projectSlug]/feedback/new/page.tsx (lines 22-25)
• Reference: src/app/embed/[projectSlug]/client.tsx auth effect

Acceptance criteria

• Anonymous/optional projects allow posting without manual login
• Required mode still redirects to sign-in
• Matches embed widget behavior

Suggested approach

Client wrapper or server action that signs in anonymously before render when auth_mode !== 'required'.