[Agent] Ticket→feedback redirect uses dead highlight param

Agent brief

Category: bug | Severity: medium | Effort: XS

Problem

Support ticket → feedback conversion redirects with ?highlight={id} but feedback list does not read that param. Link does nothing useful.

Repro

1. Admin support → convert ticket to feedback
2. Follow redirect URL with ?highlight=
3. No scroll/highlight on target post

Files

• src/app/admin/support/ai-actions.ts — redirect URL
• src/components/feedback/ — add highlight handler or remove param

Acceptance criteria

• After conversion, user lands on post with visible highlight OR
• Redirect uses direct post URL /feedback/p/{id}

Suggested approach

Prefer direct post detail URL over list highlight param.