feat(app): add character location tracking and display

app.go

@@ -5,6 +5,7 @@ import (
 	"errors"
 	"fmt"
 	"os"
+	"time"
 
 	"github.com/wailsapp/wails/v2/pkg/runtime"
 )
@@ -126,3 +127,11 @@ func (a *App) ListCharacters() ([]CharacterInfo, error) {
 	}
 	return list, nil
 }
+
+// GetCharacterLocations exposes current locations for all characters
+func (a *App) GetCharacterLocations() ([]CharacterLocation, error) {
+    if a.ssi == nil { return nil, errors.New("ESI not initialised") }
+    ctx, cancel := context.WithTimeout(a.ctx, 6*time.Second)
+    defer cancel()
+    return a.ssi.GetCharacterLocations(ctx)
+}