stills: widen per-frame cell-refine angle bound to [30,150] deg

The stills per-frame XtalOptimizer in IndexAndRefine used the struct-default
monoclinic angle bound [60,120] deg, which clamps a beta outside that window
(e.g. NmHR / 7O8F, C2 beta=131.78) to the boundary and corrupts the per-frame
cell. Both indexers already use [30,150] (FFBIDXIndexer, FFT settings); this
aligns the per-frame refine with them. Rotation path is unaffected
(refine_unit_cell is false there).

Verified on NmHR serial stills: FFBIDX with the correct C2 cell went from
0.01% to 9.10% indexed, recovering the true mC cell (beta~131.7) instead of a
clamped beta=120; 60k-image merge reaches 2.61 A at 99.8% completeness.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

image_analysis/IndexAndRefine.cpp

@@ -205,6 +205,11 @@ void IndexAndRefine::RefineGeometryIfNeeded(DataMessage &msg, IndexAndRefine::In
         .latt = *outcome.lattice_candidate,
         .crystal_system = outcome.symmetry.crystal_system,
         .min_spots = experiment.GetIndexingSettings().GetViableCellMinSpots(),
+        // Match the [30,150] deg bound the indexers already use (FFBIDXIndexer, FFT settings):
+        // the struct default [60,120] clamps a monoclinic beta outside that window (e.g. NmHR
+        // beta=131.8) to the boundary, corrupting the per-frame cell refinement.
+        .min_angle_deg = 30.0f,
+        .max_angle_deg = 150.0f,
         .refine_beam_center = true,
         .refine_distance_mm = false,
         .refine_detector_angles = false,