feat(ai-sdk): legal-corpus coverage + Phase-2 citation-graph assessment (#33)

ai-compliance-sdk/internal/api/handlers/rag_handlers.go

@@ -75,9 +75,10 @@ func (h *RAGHandlers) Search(c *gin.Context) {
 	}
 
 	c.JSON(http.StatusOK, gin.H{
-		"query":   req.Query,
-		"results": results,
-		"count":   len(results),
+		"query":      req.Query,
+		"results":    results,
+		"count":      len(results),
+		"assessment": ucca.Assess(results),
 	})
 }
 
@@ -206,3 +207,32 @@ func (h *RAGHandlers) HandleScrollChunks(c *gin.Context) {
 		"total":       len(chunks),
 	})
 }
+
+// LegalCorpusStructure returns the composition (distinct articles, annexes,
+// recitals + chunk count) of every ingested eur-lex legal act, so the coverage
+// page can show WHAT was ingested instead of just the act name.
+// GET /sdk/v1/rag/legal-corpus
+func (h *RAGHandlers) LegalCorpusStructure(c *gin.Context) {
+	acts, err := h.ragClient.CorpusStructure(c.Request.Context())
+	if err != nil {
+		c.JSON(http.StatusInternalServerError, gin.H{"error": "failed to aggregate legal corpus: " + err.Error()})
+		return
+	}
+
+	arts, anns, recs := 0, 0, 0
+	for _, a := range acts {
+		arts += a.Articles
+		anns += a.Annexes
+		recs += a.Recitals
+	}
+
+	c.JSON(http.StatusOK, gin.H{
+		"regulations": acts,
+		"totals": gin.H{
+			"regulations": len(acts),
+			"articles":    arts,
+			"annexes":     anns,
+			"recitals":    recs,
+		},
+	})
+}