4a7a6fd401
The dangerous-command approval prompt renders the flagged command so the user can decide whether to approve. If the agent constructed it with a credential (curl -H 'Authorization: Bearer sk-...', psql postgres://user:pw@host, an execute_code script with api_key = 'sk-...'), that secret hit stdout and, via the gateway notify payload, Discord/Slack messages — which are screenshottable and forwardable. Apply the existing agent.redact.redact_sensitive_text() to every user-facing approval surface. Redaction is display-only: the raw command still executes after approval, and approval persistence keys off pattern_key (not the command text), so the allowlist is unaffected. Decision context (URL, flags, command structure) is preserved; only the secret value masks. Covers all surfaces, including the execute_code path the original PR missed: - prompt_dangerous_approval(): callback + stdout fallback - check_all_command_guards(): gateway approval_data + cron/batch pending fallback - check_execute_code_guard(): gateway approval_data + no-notifier pending fallback (script body can embed credentials) Adds TestApprovalPromptRedaction covering callback redaction, no-over-redaction of clean commands, and the execute_code pending fallback. Salvaged from PR #13139 by @sgabel; extended to the execute_code surface.