test visuals

backend/src/api/analysis_api.py

@@ -251,6 +251,7 @@ class BeaconCandidateEvidence(BaseModel):
     packet_count: int
     avg_interval_seconds: float
     jitter_ratio: float
+    interval_samples: List[float] = Field(default_factory=list)
     first_seen: datetime
     last_seen: datetime
 

backend/src/utilities/database.py

@@ -2056,6 +2056,7 @@ class DatabasePool:
                     "packet_count": int(record.get("packet_count") or 0),
                     "avg_interval_seconds": round(avg_interval, 2),
                     "jitter_ratio": round(jitter_ratio, 3),
+                    "interval_samples": [round(interval, 2) for interval in intervals[:16]],
                     "first_seen": first_seen_raw.isoformat() if hasattr(first_seen_raw, "isoformat") else first_seen_raw,
                     "last_seen": last_seen_raw.isoformat() if hasattr(last_seen_raw, "isoformat") else last_seen_raw,
                 }