Pick a DB file and store its name in session

assets/static/css/filepicker.css

@@ -0,0 +1,26 @@
+.filepicker {
+
+	details:has(input[type=radio]:checked)>summary,
+	label:has(input[type=radio]:checked) {
+		background-color: lightblue;
+	}
+
+	.directories {
+		margin-left: 0.7em;
+	}
+
+	.files>li {
+		list-style-type: none;
+	}
+
+	.directories+.files {
+		margin-top: 0;
+	}
+
+	.directories:has(+ .files) {
+		margin-bottom: 0;
+	}
+
+	max-height: 30em;
+	overflow-y: scroll;
+}

assets/static/css/site.css

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+body {
+	width: 60em;
+	margin-left: auto;
+	margin-right: auto;
+}