IMPROVEMENT — Add empty state illustrations/banners for history tables

[prakshithamalla-art]

Problem

When a user visits the Security, E2E, Load, or Attack Pipeline tabs for the first time, the "History" sections are entirely blank or show raw empty tables, which can feel unpolished.

Proposed Solution

Create a clean reusable EmptyHistoryState component showing a subtle Lucide icon (e.g., History or ShieldAlert), a friendly descriptive notice, and a shortcut button pointing to run a new scan.

File(s) to Modify

• app/console/security/page.tsx
• app/console/attack-pipeline/page.tsx
• app/console/e2e/page.tsx

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