The Marquee, shapes and a moved selection snap to View › Snap To; Ctrl draws freely (13.5a)

TASKS.md

@@ -425,8 +425,10 @@ Reviews for this section ran on codex `gpt-6.1-sol` at `max` (agent `codex-sol`)
 - 13.4a review (Fable 5.1): round 1 FAIL (the swatch's minimize case, its white ring and radius untested); round 2 PASS.
 - [x] 13.4b Part two: Export JPEG's zoomable preview and tidier layout, the View menu's zoom on it, one OK on the import error (`ac6f309`).
 - 13.4b review (Fable 5.1): round 1 FAIL (the full-size preview passed Qt's 128 MB decode limit on large canvases, so they could not export; the kept middle's `min` untested); round 2 PASS.
-- [ ] 13.5 Part two: the marquee, shapes and a moved selection snap to View › Snap To (`d6e3e93`, `8b1369a`); View › Grid Settings… with Restore Defaults (`1c819d0`, `db5eafa`).
-- [ ] 13.6 Part three: Ctrl+Z while typing takes back what was typed (`ee68ba9`); font previews in the Type bar (`1bd1df4`).
+- [x] 13.5a Part three: the marquee, shapes and a moved selection snap to View › Snap To (`d6e3e93`, `8b1369a`).
+- 13.5a review (Fable 5.1): round 1 FAIL (test gaps: rounding, the targets without centres, a path's own box, the drag's reach when zoomed); round 2 FAIL (the nearer of two lines); round 3 FAIL (the nearer line neither first nor lowest). All fixed, each mutant caught; closed after the third round.
+- [ ] 13.5b Part four: View › Grid Settings… with Restore Defaults (`1c819d0`, `db5eafa`).
+- [ ] 13.6 Part five: Ctrl+Z while typing takes back what was typed (`ee68ba9`); font previews in the Type bar (`1bd1df4`).
 - [ ] 13.7 Versions 1.3.6–1.3.7: New Canvas presets in a More menu (`aaf3dc0`); the project's Quick Look preview (`14aad18`, `4868465`) judged: the package's preview file is format, Finder's thumbnail extension is macOS alone.
 - [ ] 13.8 Version 1.4, part one: the changes behind the GPU canvas that the CPU canvas and export share: a sharper canvas with adjustment layers (adjustment surfaces at device resolution, adjustment operations scaled with the surface, direct sampling for an upright layer at 1:1, tiled layers included) and the PSD adjustment and mask fixes (`8c0417b`); Photoshop's positive Saturation (`fe7a83d`); Levels and Hue/Saturation on all cores (`af3b568`); a blur's preview kept while the layer grows (`3ccc125`); the hierarchy kept until what shapes it changes (`d0135c8`, `dcf1c66`).
 - [ ] 13.9a Part two: blending. Clipping stacks and live-mask coverage at device resolution; an adjustment in any mode over the document and inside a stack, blended at full coverage, its alpha restored, then mixed through mask and opacity (`6dc2219`); a clipping stack composited in its base's mode in every mode, on the canvas, in export and in Copy Merged (`8ab32c9`; Qt keeps the stack's mode: a held judgment to prove); Soft Light by Photoshop's formula as Core Image computes it, on the canvas, in export and in Copy Merged (`5a8f6ce`: a 0.9 source over a 0.5 backdrop gives about 170; compare Qt's formula first); soft, partly clear painted layers blending alike in Soft Light, Overlay, Multiply and Color Dodge (`e6c964b`, `softEdgedLayersBlendTheSame`).