feat: implement full breadcrumb path navigation in Files tab

- Add breadcrumbPath array to app state for tracking folder hierarchy
- Rewrite updateBreadcrumb() to render full path: Home > folder > subfolder
- Each breadcrumb segment is clickable to navigate back to that level
- Current folder shown in bold (non-clickable), parent folders as links
- Reset breadcrumb path on tab switch, home navigation, and initial load
- Update navigateFolder/selectFolder to push to breadcrumb path
- Enhanced breadcrumb CSS with hover effects and dark mode support

static/css/base/reset.css

@@ -0,0 +1,22 @@
+* {
+	box-sizing: border-box;
+	margin: 0;
+	padding: 0;
+	font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
+}
+
+body {
+	display: flex;
+	height: 100vh;
+	background-color: #f5f7fa;
+	overflow: hidden;
+}
+
+html[dir='rtl'] .fa-arrow-left::before {
+	content: "\f061";
+}
+
+html[dir='rtl'] .fa-sign-out-alt {
+	-webkit-transform: rotate(180deg);
+	transform: rotate(180deg);
+}