# AD-491 Build Report

**Date:** 2026-05-01
**Commit:** (pending)
**Builder:** Wave 6 continuous-build

## Summary

Implemented AD-491 Infodynamic Telemetry per `prompts/ad-491-infodynamic-telemetry.md`.

## Sections Implemented

| Section | File | Status |
|---|---|---|
| Section 0: Event Type | `src/probos/events.py` | ✅ Added `INFODYNAMIC_REPORT` after `AGENT_SELF_NAMED` (fallback anchor used since AD-459 hasn't landed) |
| Section 1: `InfodynamicProbe` + `InfodynamicReport` | `src/probos/cognitive/infodynamic.py` (new) | ✅ 207 lines; 3 entropy signals + emit |
| Section 2: EventType insert | (covered by Section 0) | ✅ |
| Section 3: `InfodynamicConfig` | `src/probos/config.py` | ✅ Added Pydantic class + `infodynamic: InfodynamicConfig` field after `orders: OrdersConfig` |
| Section 4: Wire into startup | `src/probos/startup/finalize.py` | ✅ Inserted after AD-440 OrderManager block; `runtime.infodynamic_probe` (public) |
| Section 5: REST endpoint | `src/probos/routers/infodynamic.py` (new) + `src/probos/api.py` | ✅ Router registered |
| Tests | `tests/test_ad491_infodynamic.py` (new) | ✅ 10/10 pass at `-n 0` |
| Tracking | `PROGRESS.md`, `docs/development/roadmap.md:5995` | ✅ Updated |

## Test Results

- Focused gate: `pytest tests/test_ad491_infodynamic.py -v -n 0` → **10/10 passed in 0.50s**
- Full parallel gate: `pytest tests/ -q -n 8 --dist=loadfile` → **10340 passed (+10), 14 skipped, 151 warnings in 340.53s**

## Decisions / Anchors

- AD-491 is the FIRST Wave 6 prompt to land. Section 2 anchor uses `AGENT_SELF_NAMED` (line 190, AD-499) as fallback since `SERVICE_TIER_RESTORED` (AD-459) hasn't landed.
- Section 3 anchor uses `orders: OrdersConfig = OrdersConfig()  # AD-440` (line 1593) as terminal fallback since neither `degradation:` nor `pre_flight:` exist yet.
- Public attribute `runtime.infodynamic_probe` per Wave 5 retrospective convention #1.
- No new pyproject deps (stdlib `math`, `time`, `collections.Counter`).

## Pre-Commit Sanity Check

```
git diff --cached --stat
```

7 files changed, 305 insertions(+), 4 deletions(-). Max per-file deletion: 4 lines (`api.py` import block). Well under 200-line threshold.

## Acceptance Criteria

- [x] All 10 tests pass under `pytest tests/test_ad491_infodynamic.py -v -n 0`
- [x] Full parallel gate non-decreasing (+10 tests)
- [x] 1 new EventType in `events.py`
- [x] `runtime.infodynamic_probe` published as public attribute
- [x] `/api/infodynamic` returns 404 when probe absent (smoke-tested)
- [x] `cognitive/emergence_metrics.py` is unchanged (no overlap with AD-557)
