--This update brings the following changes--
Background color: Moved to the panel below the canvas; features 11 presets plus a custom color picker—tap to change the vehicle color instantly. "Done" counts as an undo step; "Cancel" reverts changes.
"Edit Color" in the layer list: Uses the same panel. "Apply" counts as an undo step; canceling or swiping down to close reverts changes.
Export: Tapping "Export" goes straight to the export page with in-page rendering; no initial filename prompt. Filenames are edited on the export page; invalid names prevent saving or sharing.
New text: Opens with the keyboard active and the sample text "07" fully selected—type immediately to replace it.
Editor title: Displays the project name; tap to rename.
Two-finger gestures: When no layer is selected and no layer is under your fingers, use two fingers to directly scale and pan the canvas.
Snapping: Fixed at a distance of 8pt on screen; sensitivity no longer changes with zoom level.
Duplicate layer: Copies are slightly offset rather than perfectly overlapping the original.
Startup and new projects: App opens to the last-used tab; new saved projects appear in "My Projects" after closing.
Project cards: Long-press to open the menu; modification time is precise to the minute.
Dragging/scaling layers: Updates only the canvas; no longer recalculates the top bar, toolbar, or pop-ups.
Imported photos: Saved as JPEG if they lack an alpha channel; saved as PNG if they have one.
Thumbnails and exported images: Now decoded in the background.
Sample texture encoding and shared file writing: Moved off the main thread.
Closing the editor: Saves and refreshes the list before collapsing; no jumping when returning to the list.
Selection box and handles: Move along with the layer during undo, redo, alignment, flipping, and scaling.
Scale button and "Fit to Canvas": Include transition animations.
Layer appearance/disappearance: Animates from the layer's center; full-screen background layers only fade in/out.
Canvas panning: Includes inertia after releasing; stops instantly upon touch.
Save status: Hidden by default; appears only when saving takes longer than 1 second. Appears after a delay or upon failure
Controls no longer turn gray while waiting; only touch input is intercepted
Animations (such as the spray effect) on the export page now play only after the page has fully loaded; the onboarding screen is displayed immediately upon first launch

Fixed:
Crash occurring when tapping "Done" or "Cancel" on the background color panel
Auto-save triggering exactly when a gesture begins, interrupting dragging, scaling, or rotating (causing the layer to lag behind the touch)
"Discard changes and close" occasionally saving changes anyway
Touch targets for "Cancel" and "Done" on the background color panel being too small
Export page displaying an error notification instead of crashing when an issue occurs; the "Share" row no longer jumps when renaming a file
Renaming artworks, confirming deletion, and renaming layers no longer relying on the specific sequence of state clearing