fix(session): increase default session timeout to 1 week (#30)

* fix(session): increase default session timeout to 1 week

Changed the default session timeout from 1 hour (3600s) to 1 week (604800s)
in both cortex-app-server config and cortex-engine state defaults.

* fix(batch): silence unused variable clippy warnings

Author: echobt

src/cortex-app-server/src/config.rs

@@ -331,7 +331,7 @@ fn default_max_sessions() -> usize {
 }
 
 fn default_session_timeout() -> u64 {
-    3600 // 1 hour
+    604800 // 1 week
 }
 
 fn default_max_messages() -> usize {

src/cortex-batch/src/batch_ops.rs

@@ -65,7 +65,7 @@ async fn atomic_write(path: &Path, content: &[u8]) -> std::io::Result<()> {
 
         match fs::rename(&temp_path, path).await {
             Ok(()) => break,
-            Err(e) if retries > 0 => {
+            Err(_) if retries > 0 => {
                 retries -= 1;
                 tokio::time::sleep(tokio::time::Duration::from_millis(50)).await;
                 continue;

src/cortex-batch/src/multi_edit.rs

@@ -65,7 +65,7 @@ async fn atomic_write(path: &Path, content: &[u8]) -> std::io::Result<()> {
 
         match fs::rename(&temp_path, path).await {
             Ok(()) => break,
-            Err(e) if retries > 0 => {
+            Err(_) if retries > 0 => {
                 retries -= 1;
                 tokio::time::sleep(tokio::time::Duration::from_millis(50)).await;
                 continue;

src/cortex-engine/src/state/mod.rs

@@ -69,7 +69,7 @@ impl Default for StateConfig {
     fn default() -> Self {
         Self {
             max_sessions: 100,
-            session_timeout: Duration::from_secs(3600),
+            session_timeout: Duration::from_secs(604800), // 1 week
             turn_timeout: Duration::from_secs(300),
             persist: false,
             persist_dir: None,