refactor: JSON data column for findings, code snippets captured and displayed

guarddog_nexus/api/findings.py

@@ -21,9 +21,9 @@ async def list_findings(
 ):
     q = select(Finding)
     if rule:
-        q = q.where(Finding.rule == rule)
+        q = q.where(func.json_extract(Finding.data, "$.rule") == rule)
     if severity:
-        q = q.where(Finding.severity == severity)
+        q = q.where(func.json_extract(Finding.data, "$.severity") == severity)
     if scan_id:
         q = q.where(Finding.scan_id == scan_id)
 
@@ -38,10 +38,7 @@ async def list_findings(
             {
                 "id": f.id,
                 "scan_id": f.scan_id,
-                "rule": f.rule,
-                "severity": f.severity,
-                "message": f.message,
-                "location": f.location,
+                **f.data,
                 "created_at": f.created_at.isoformat() if f.created_at else None,
             }
             for f in findings