[FRONTEND] Add accessible bulk-action review flow for destructive actions

[utksh1]

Problem

SecuScan needs a production-grade improvement in this area: Safer destructive workflows..

Scope

Replace single-step destructive bulk actions with review, keyboard-accessible confirmation, affected-count summary, and undo where feasible.

Acceptance Criteria

• The implementation is focused and does not introduce unrelated UI, docs, lockfile, or formatting churn.
• Security-sensitive behavior has explicit negative tests where applicable.
• Existing tests continue to pass, and new tests cover the main success and failure paths.
• Documentation or configuration examples are updated when operator behavior changes.

Verification

Tests should cover keyboard-only use, focus trap, cancel/confirm, and undo feedback.

Difficulty

Hard, useful issue intended for experienced contributors.

[Tanisha-sharma7302]

Hi @utksh1, I'd like to work on this issue under GSSoC '26. Can you please assign it to me and add the GSSoC label?