# R04 — FORENSIC GRAPH AUDIT

**Mission:** R-04  
**Date:** 2026-06-22  
**Auditor:** Governance Agent  
**Source of truth:** `data/SKILLS_GRAPH.json` (SHA: c3aea3081423e7fa85ebb81608b36d83063e0966)  
**Mutation:** NONE — read-only audit

---

## PHASE 0 — TRUTH CHECK

### Graph Header (from SKILLS_GRAPH.json)

| Field | Value |
|---|---|
| schema_version | 2.0.0 |
| generated_at | 2026-06-22T12:12:00+03:00 |
| generation_mission | R-02F |
| total_active_nodes_enumerated | 197 |
| total_excluded_nodes | 1 |
| total_edges | **0** |
| categories_enumerated | 8 of 17 |
| categories_pending | 9 |

### Cross-File Consistency

| File | Nodes Claimed | Edges Claimed | Match? |
|---|---|---|---|
| SKILLS_GRAPH.json | 197 active (8 cats) | 0 | AUTHORITATIVE |
| MEMORY_STATE.md | UNKNOWN (R-01/R-02 recovery state) | UNKNOWN | NOT VERIFIED |
| DECISION_LOG.md | Not a metrics source | N/A | N/A |
| R03_EDGE_EVIDENCE.md | FILE NOT FOUND | FILE NOT FOUND | ❌ MISSING |
| R03_GRAPH_ANALYSIS.md | FILE NOT FOUND | FILE NOT FOUND | ❌ MISSING |
| R03_VALIDATION_REPORT.md | FILE NOT FOUND | FILE NOT FOUND | ❌ MISSING |

**FINDING:** R-03 was never executed or committed. The three R-03 files listed as authoritative sources in the R-04 mission do not exist in the repository. R-04 proceeds from SKILLS_GRAPH.json as the sole authoritative source.

**State divergence:** No divergence possible — SKILLS_GRAPH.json is the only numeric source. No STATE_DIVERGENCE_REPORT.md required.

---

## PHASE 1 — GRAPH INTEGRITY AUDIT

### Audit Results

| Check | Result | Detail |
|---|---|---|
| Duplicate Node IDs | ✅ PASS | 0 duplicates across 197 nodes |
| Duplicate Edges | ✅ PASS | 0 edges, nothing to duplicate |
| Invalid Target Audit | ✅ PASS | No edges to validate |
| Invalid Source Audit | ✅ PASS | No edges to validate |
| Self-Reference Audit | ✅ PASS | No edges to validate |
| Broken Reference Audit | ✅ PASS | No edges to validate |
| Orphan Node Audit | ❌ FAIL | ALL 197 nodes have degree=0 |
| Isolated Component Audit | ❌ FAIL | 197 connected components of size 1 |

### Node ID Format Audit

All 197 nodes follow the `skill:slug` prefix convention. No malformed IDs detected.

### Category Assignment Audit

All 197 nodes have a valid category assignment. No node has a null or missing category.

### Excluded Node Audit

One node excluded: `skill:web-scraping` from `skills/11-web/web-scraping.md`  
Canonical path: `skills/04-action-execution/web-scraping.md`  
Decision: D-R02E.2-001 — duplicate path, not a bad ID.

### GRAPH_INTEGRITY_SCORE

```
Base score: 100
Deduction — all nodes orphaned (-30): -30
Deduction — 197 isolated components (-20): -20
Deduction — 9 categories not yet enumerated (-10): -10
Deduction — R-03 prerequisite files missing (-5): -5

GRAPH_INTEGRITY_SCORE: 35 / 100
```

**Primary cause:** The graph has no edges. All node-level checks pass. All edge-level checks are vacuously true (nothing to fail). The structural deficit is total absence of connectivity.
