docs: condense the rc170 changelog to one line per change

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

docs/CHANGELOG.md

@@ -3,11 +3,10 @@
 
 ### 1.0.0-rc.170
 
-* Fixed a `jfjoch_broker` crash during indexing: a non-finite value reaching the FFT shortlist, space-group operator ranking or indexing-refinement sorts no longer causes undefined behaviour, and GPU FFT indexer kernel launches are now error-checked.
-* rugnux needs about a third less peak memory to scale, merge and post-refine rotation data with tens of millions of partial observations, with identical results.
+* Fixed a `jfjoch_broker` crash during indexing: sorting no longer misbehaves on non-finite values, and GPU FFT indexer kernel launches are now error-checked.
+* rugnux needs about a third less peak memory to scale, merge and post-refine rotation data, with identical results.
 * `rugnux --model`: the placed coordinate file carries the space group its own coordinates obey, and says so when that is not the group the reflection files beside it carry.
-* `jfjoch_viewer`: fixes in the dataset plots (the stacked plots line up their y axes, the horizontal crosshair follows the cursor, a run in progress labels the angles of its whole sweep), in the inspector (a long dataset name wraps instead of being cut off, a live session shows its sample-head angles) and in the layout (the resize handle beside the file panel is centred).
-* `jfjoch_viewer`: the black outline around spot markers is now off by default, switchable with an "Outline spots in black" checkbox under "Image features", and the highest-pixel markers are black-outlined white boxes around the pixel instead of crosses on top of it.
+* `jfjoch_viewer`: fixes in the dataset plots, inspector and layout; spot markers lose their black outline by default (a checkbox under "Image features" restores it) and the highest-pixel markers are white boxes around the pixel.
 
 ### 1.0.0-rc.169