feat: Add cross-mode analytics dashboard with geofencing, correlations, and data export

Adds a unified analytics mode under the Security nav group that aggregates
data across all signal modes. Includes emergency squawk alerting (7700/7600/7500),
vertical rate anomaly detection, ACARS/VDL2-to-ADS-B flight correlation,
geofence zones with enter/exit detection for aircraft/vessels/APRS stations,
temporal pattern detection, RSSI history tracking, Meshtastic topology mapping,
and JSON/CSV data export.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

utils/flight_correlator.py

@@ -0,0 +1,84 @@
+"""Match ACARS/VDL2 messages to ADS-B aircraft by callsign."""
+
+from __future__ import annotations
+
+import time
+from collections import deque
+
+
+class FlightCorrelator:
+    """Correlate ACARS and VDL2 messages with ADS-B aircraft."""
+
+    def __init__(self, max_messages: int = 1000):
+        self._acars_messages: deque[dict] = deque(maxlen=max_messages)
+        self._vdl2_messages: deque[dict] = deque(maxlen=max_messages)
+
+    def add_acars_message(self, msg: dict) -> None:
+        self._acars_messages.append({
+            **msg,
+            '_corr_time': time.time(),
+        })
+
+    def add_vdl2_message(self, msg: dict) -> None:
+        self._vdl2_messages.append({
+            **msg,
+            '_corr_time': time.time(),
+        })
+
+    def get_messages_for_aircraft(
+        self, icao: str | None = None, callsign: str | None = None
+    ) -> dict[str, list[dict]]:
+        """Match ACARS/VDL2 messages by callsign, flight, or registration fields."""
+        if not icao and not callsign:
+            return {'acars': [], 'vdl2': []}
+
+        search_terms: set[str] = set()
+        if callsign:
+            search_terms.add(callsign.strip().upper())
+        if icao:
+            search_terms.add(icao.strip().upper())
+
+        acars = []
+        for msg in self._acars_messages:
+            if self._msg_matches(msg, search_terms):
+                acars.append(self._clean_msg(msg))
+
+        vdl2 = []
+        for msg in self._vdl2_messages:
+            if self._msg_matches(msg, search_terms):
+                vdl2.append(self._clean_msg(msg))
+
+        return {'acars': acars, 'vdl2': vdl2}
+
+    @staticmethod
+    def _msg_matches(msg: dict, terms: set[str]) -> bool:
+        """Check if any identifying field in msg matches the search terms."""
+        for field in ('flight', 'tail', 'reg', 'callsign', 'icao', 'addr'):
+            val = msg.get(field)
+            if val and str(val).strip().upper() in terms:
+                return True
+        return False
+
+    @staticmethod
+    def _clean_msg(msg: dict) -> dict:
+        """Return message without internal correlation fields."""
+        return {k: v for k, v in msg.items() if not k.startswith('_corr_')}
+
+    @property
+    def acars_count(self) -> int:
+        return len(self._acars_messages)
+
+    @property
+    def vdl2_count(self) -> int:
+        return len(self._vdl2_messages)
+
+
+# Singleton
+_correlator: FlightCorrelator | None = None
+
+
+def get_flight_correlator() -> FlightCorrelator:
+    global _correlator
+    if _correlator is None:
+        _correlator = FlightCorrelator()
+    return _correlator