3c835f4592
Automatic alignment's phase-correlation translation search is unreliable, so add a Fusion -> Manual Alignment dialog: every angle's CH4 threshold mask overlaid at once with distinct colors/opacity, a selector for the active angle, arrow keys to nudge translation and Q/E to nudge rotation, an Auto De-rotate button that snaps to the known scan angle, and Save/Clear controls backed by a JSON sidecar that's restored automatically on reload. Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>