feat(bridge): exakte Peilung (Grad) zusätzlich zur Himmelsrichtung im Präfix

Neben "nordwestwaerts" jetzt auch die genaue Bearing-Gradzahl (0-359) —
"unterwegs nordwestwaerts (304 Grad)". Die KI nutzt, was die Frage braucht
(Pannenhilfe → Ort/km, Luftfahrt/Navigation → exakte Peilung).

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

bridge/aria_bridge.py

@@ -1220,8 +1220,9 @@ class ARIABridge:
             if anchor:
                 moved = _haversine_m(anchor["lat"], anchor["lon"], lat, lon)
                 if moved >= MIN_MOVE_M:
-                    self._last_heading = _heading_word(
-                        _bearing_deg(anchor["lat"], anchor["lon"], lat, lon))
+                    _bg = _bearing_deg(anchor["lat"], anchor["lon"], lat, lon)
+                    self._last_heading = _heading_word(_bg)
+                    self._last_bearing = int(round(_bg)) % 360   # exakte Peilung
                     self._heading_anchor = {"lat": lat, "lon": lon}
             else:
                 self._heading_anchor = {"lat": lat, "lon": lon}
@@ -1748,7 +1749,13 @@ class ARIABridge:
                 place = getattr(self, "_last_place_name", "")
                 where = f"{place} " if place else ""
                 heading = getattr(self, "_last_heading", "")
-                moving = f", unterwegs {heading}" if heading else ""
+                bearing = getattr(self, "_last_bearing", None)
+                if heading and bearing is not None:
+                    moving = f", unterwegs {heading} ({bearing} Grad)"
+                elif heading:
+                    moving = f", unterwegs {heading}"
+                else:
+                    moving = ""
                 parts.append(
                     f"[Stefans aktueller Standort: {where}(GPS {float(lat):.5f}, "
                     f"{float(lon):.5f}){moving}. Nutze das nur wenn die Frage sich "