Initial project setup: Clojure Kit web app for BTC price tracking

Kit framework with Undertow, Reitit routing, Hiccup + HTMX templating,
Tailwind CSS v4, PostgreSQL (empty database), and mobile-first index page.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

env/test/resources/logback.xml

@@ -0,0 +1,11 @@
+<configuration>
+  <statusListener class="ch.qos.logback.core.status.NopStatusListener" />
+  <appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
+    <encoder>
+      <pattern>%d{HH:mm:ss.SSS} [%thread] %-5level %logger{36} - %msg%n</pattern>
+    </encoder>
+  </appender>
+  <root level="ERROR">
+    <appender-ref ref="STDOUT" />
+  </root>
+</configuration>