fix: bank display showing 1 instead of 0 + build fixes

- Removed 'e.bank||1' falsy trap (was converting bank 0 to 1)
- Fixed TypeScript errors: cp guard, unused vars, path aliases
- Added base: '/ui/' to vite config for correct asset paths
- Bank persistence already implemented (localStorage pedal-footswitch-bank)
- Rebuilt and deployed to src/web/ui-dist/

src/web/ui-dist/img/fx_terminal.svg

@@ -1,9 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<!-- Generator: Adobe Illustrator 16.0.0, SVG Export Plug-In . SVG Version: 6.00 Build 0)  -->
-<!DOCTYPE svg PUBLIC "-//W3C//DTD SVG 1.1//EN" "http://www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd">
-<svg version="1.1" id="Layer_1" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" x="0px" y="0px"
-	 width="48px" height="48px" viewBox="0 0 48 48" enable-background="new 0 0 48 48" xml:space="preserve">
-<circle cx="24" cy="24" r="14"/>
-<path display="none" fill="none" stroke="#000000" stroke-width="3" d="M45.5,39.392c0,3.098-2.011,6.108-5.108,6.108H8.609
-	c-3.098,0-6.109-3.011-6.109-6.108V7.609C2.5,4.511,5.511,2.5,8.609,2.5h31.783c3.098,0,5.108,2.011,5.108,5.109V39.392z"/>
-</svg>