# AD-455 Build Report

**Date:** 2026-05-01
**Status:** Complete

## Files Changed

- `src/probos/security/__init__.py` (new, 1 line — owns directory creation)
- `src/probos/security/threat_detector.py` (new, 110 lines)
- `src/probos/security/input_validator.py` (new, 80 lines)
- `src/probos/security/trust_integrity.py` (new, 100 lines, framework — v1 empty report)
- `src/probos/security/red_team_lead.py` (new, 130 lines, health monitor)
- `src/probos/runtime.py` (8 sites: `_red_team_agents` → `red_team_agents`)
- `src/probos/startup/agent_fleet.py` (1 site)
- `src/probos/startup/shutdown.py` (1 site + AD-455 stop)
- `src/probos/startup/finalize.py` (1 rename site + ~32 lines wiring)
- `src/probos/events.py` (+4)
- `src/probos/config.py` (+11)
- `tests/test_ad455_security_team.py` (new, 16 tests)
- `PROGRESS.md` (+2)
- `docs/development/roadmap.md` (status flip)

## Sections Implemented

- Section 0: 4 EventTypes (THREAT_DETECTED, TRUST_INTEGRITY_VIOLATION, SECURITY_INPUT_REJECTED, RED_TEAM_CAMPAIGN_COMPLETE) ✓
- Section 0a: `_red_team_agents` → `red_team_agents` (public, 8 sites — prompt said 3, found 8) ✓
- Section 1: `src/probos/security/__init__.py` (owns package creation) ✓
- Section 2: ThreatDetector ✓
- Section 3: TrustIntegrityMonitor (framework only; detection deferred to AD-455b) ✓
- Section 4: InputValidator ✓
- Section 5: RedTeamLead health-monitor coordinator (v1; adversarial dispatch deferred to AD-455b) ✓
- Section 6: EventTypes added ✓
- Section 7: SecurityConfig + SystemConfig wiring ✓
- Section 8: finalize.py wiring + shutdown.py stop ✓

## Test Results

`pytest tests/test_ad455_security_team.py -v -n 0` → 16 passed in 0.79s.

## Engineering Principles Compliance

- ✓ Demeter: 4 services published as public `runtime.X` attributes (no underscores)
- ✓ Public API: `red_team_agents` promoted from private to public via AD-680 one-shot pattern
- ✓ No phantom APIs: RedTeamLead does NOT add `run_probe` to RedTeamAgent; uses `is_alive` only
- ✓ Type annotations on all public methods
- ✓ Pydantic config with `Field(ge=..., le=...)` validators
- ✓ Async discipline: `_task` reference held; `CancelledError` propagated; consecutive-failure backoff
