Implement Payload Library UI and Real Live Attack Data

[google-labs-jules]

Implemented the Payload Library page to display successful attack payloads from Firestore. Refactored the Live Attack View to use real Firestore data and AI flows instead of mock data.

Changes:

• Updated src/services/firestore-service.ts to include getSuccessfulPayloadsWithMetadata.
• Updated src/services/payload-service.ts to expose payload library data.
• Implemented src/app/(app)/payloads/page.tsx to list successful payloads.
• Refactored src/components/LiveAttackView.tsx to use real services for operations, conversation history, and AI generation (removing mocks).

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PR created automatically by Jules for task 1502364923887101254 started by @lucron9090

[google-labs-jules]

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