TASK REPORT 1
Completed date: 2026-07-05
Tasks completed:
1. Ctrl key color select (eyedropper on canvas click/drag while holding Ctrl/Cmd)
2. Mouse gestures (Shift+drag on canvas to resize active brush tools)
3. Hiding panels (Tab key toggles all utility panels, displaying only the canvas)

Implementation details:
- Added brush resizing helper variables and `hide_panels` field to ToolState and HcieApp.
- Updated canvas/mod.rs input handling to handle Ctrl color picking and Shift resizing.
- Prevented stroke begin and end hooks from creating blank history steps during gestures.
- Updated app/mod.rs CentralPanel rendering to bypass dock layout entirely when hide_panels is active.
- Added Tab shortcut key check to toggle the panels.
- Successfully verified build and captured tools panel screenshot.