Parker Solar Probe Observations of Compound Reconnection Exhaust Boundaries and Mirror-mode Structures in the near-Sun Heliospheric Current Sheet - Sun, W; Phan, T; Huang, J; Liu, YH; Slavin, JA; Romeo, O; Liu, M; Angelopoulos, V; Rahmati, A; Larson, D; Walia, N; Bale, S; et al. (Astrophysical Journal Letters, 2026)