v0.6.0

Performance, correctness, and robustness release. Per-epoch processing is roughly 2× faster, two unit bugs in the velocity fit are fixed, and batch runs are more robust and resumable.

Highlights

• ~2× faster per epoch — the slow per-pixel sunpy/astropy coordinate transforms are replaced with an equivalent analytic, numba-accelerated path, validated against the sunpy implementation.
• Fixed two unit (degree/radian) bugs in the Doppler bulk-velocity fit

Performance

• Analytic helioprojective → heliographic/heliocentric geometry (replaces the per-pixel SkyCoord frame transforms).
• Coarse-grid AIA → HMI reprojection.
• numba-accelerated geometry, Legendre velocity-fit design matrix, and bilinear resampling.
• Vectorized region-statistics aggregation.
• Opt-in within-epoch multithreading via the SDO_THREADS environment variable (default 1, which is the safe setting under the across-epoch process pool).

Robustness & tooling

• Clearer end-of-run summaries and explicit per-epoch skip reasons; QUALITY-flag decoding with tolerated "soft" flags recorded in the output.
• New scripts/run_one.py (idempotent, resumable single-epoch processing), and scripts/stitch_tmp.py for robust, resumable, failure-isolated batch runs.

Plotting

• Image and mask plots now stamp the observation timestamp (formatted from DATE-OBS) in the upper-left corner, clear of the solar disk.

Full Changelog: https://github.com/palumbom/sdo-clv-pipeline/compare/v0.5.3...v0.6.0