Fix log format spacing: single space between timestamp and level

- Replace tracing compact format with custom FormatEvent
- Eliminate double space padding between timestamp and log level
- Clean single-space formatting: timestamp level message
- Maintain all existing log content and functionality

src/logging.rs

@@ -1,15 +1,35 @@
 use tokio::net::TcpStream;
 use tokio_rustls::server::TlsStream;
-use tracing_subscriber::fmt::time::FormatTime;
+use tracing_subscriber::fmt::format::Writer;
+use tracing_subscriber::fmt::FormatFields;
 
-struct GeminiTimeFormat;
+struct CleanLogFormatter;
 
-impl FormatTime for GeminiTimeFormat {
-    fn format_time(&self, w: &mut tracing_subscriber::fmt::format::Writer<'_>) -> std::fmt::Result {
+impl<S, N> tracing_subscriber::fmt::FormatEvent<S, N> for CleanLogFormatter
+where
+    S: tracing::Subscriber + for<'a> tracing_subscriber::registry::LookupSpan<'a>,
+    N: for<'a> tracing_subscriber::fmt::FormatFields<'a> + 'static,
+{
+    fn format_event(
+        &self,
+        ctx: &tracing_subscriber::fmt::FmtContext<'_, S, N>,
+        mut writer: Writer<'_>,
+        event: &tracing::Event<'_>,
+    ) -> std::fmt::Result {
+        // Write timestamp
         let now = time::OffsetDateTime::now_utc();
-        write!(w, "{}-{:02}-{:02}T{:02}:{:02}:{:02}",
+        write!(writer, "{}-{:02}-{:02}T{:02}:{:02}:{:02} ",
                now.year(), now.month() as u8, now.day(),
-               now.hour(), now.minute(), now.second())
+               now.hour(), now.minute(), now.second())?;
+
+        // Write level
+        let level = event.metadata().level();
+        write!(writer, "{} ", level)?;
+
+        // Write the message
+        ctx.format_fields(writer.by_ref(), event)?;
+
+        writeln!(writer)
     }
 }
 
@@ -74,10 +94,7 @@ pub fn init_logging(level: &str) {
 
     tracing_subscriber::registry()
         .with(tracing_subscriber::fmt::layer()
-            .compact()
-            .with_timer(GeminiTimeFormat)
-            .with_target(false)
-            .with_thread_ids(false))
+            .event_format(CleanLogFormatter))
         .with(tracing_subscriber::filter::LevelFilter::from_level(level))
         .init();
 }