CHANGELOG: 1.0.0-rc.181 entry

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01HVeDQqrcrEZy6XBUCMZvyT

docs/CHANGELOG.md

@@ -1,6 +1,16 @@
 # Changelog
 ## 1.0.0
 
+### 1.0.0-rc.181
+
+* Rugnux: Several rotation sweeps of one crystal are merged as one dataset (`rugnux a_master.h5 b_master.h5`), on a common indexing and cell, with a non-isomorphous sweep left out and reported; `--sweeps separate` processes each sweep on its own. Bruker `.sfrm` frames and imgCIF files with a full goniometer axis chain are read.
+* Rugnux: More robust rotation processing - a retry with a more sensitive spot finder when no lattice is found, a self-consistent detector distance, long axes and doubled cells tested as hypotheses, a `-C` supercell multiple stepped down, and each ice ring merged, down-weighted or rejected on its own.
+* Rugnux: Serial stills are merged with a partiality-aware error model, reported as `ERROR_MODEL_A/B/C` with no ISa or R_merge/R_meas/R_pim; runs without `-S` have an overall intensity scale about 0.86-0.88 times that of earlier versions, with unchanged statistics. A second crystal form is left out of the merge and reported, the indexing ambiguity is resolved more reliably, and `--model` no longer influences processing.
+* Rugnux: The reported CC1/2 is the standard unweighted one, which can be lower than before on sweeps with weak frames; ISa comes with a 95% interval (`ISA_LOW`/`ISA_HIGH`).
+* Rugnux: Model refinement adds anisotropic/TLS, local NCS and twin refinement where R-free supports them; building waters and relabelling ions is now off by default (`--refine-solvent` turns it on).
+* NXmx: A detector of several modules is written as `module_0` ... `module_N` only, so DIALS reads each module as its own panel.
+* Other: JPEG previews use a bundled encoder (libjpeg-turbo no longer needed), Rugnux prints how to cite it, and the release archives contain the HTML documentation.
+
 ### 1.0.0-rc.180
 
 * Rugnux: A placed model is refined by default - restrained maximum-likelihood refinement on the GPU (CPU without one), writing `<prefix>_refined_model.cif`, `<prefix>_refined_maps.mtz` and the difference-map blobs in `<prefix>_blobs.json`; `--no-refine` skips it.