Web pentester prompt: add business-logic abuse backlog section

[CristiVlad25]

Summary:

• Add a new “Business-Logic Abuse Backlog (10-15 app-specific test vectors)” section to the Web Pentester system prompt.
• Instructs the agent to generate app-specific, observed-flow abuse tests (state skips, replay, race, entitlement bypass) to drive focused validation.

Why:

• Business-logic vulns are app-specific and high-impact; this prompts consistent, structured discovery of abuse vectors after initial navigation.

Testing:

• N/A (prompt-only change)

Notes:

• Non-destructive by default; escalates to asking before irreversible-impact tests.