Create reports/explainability.py

reports/explainability.py

@@ -0,0 +1,23 @@
+def explainability_report(results):
+    agencies = {r["agency"] for r in results}
+    exemptions = set()
+
+    for r in results:
+        exemptions |= set(classify_exemptions(r["snippet"])["codes"])
+
+    return f"""
+## System Explainability Report
+
+**Purpose:** Public FOIA document discovery  
+**Data Sources:** Public electronic reading rooms  
+**Agencies Covered:** {', '.join(agencies)}
+
+### Safety Controls
+- Robots.txt enforcement
+- Per-agency kill switches
+- Redaction detection
+- Exemption surfacing
+
+### FOIA Exemptions Detected
+{', '.join(exemptions) or 'None'}
+"""