diff --git a/src/bin/poc-daemon/context.rs b/src/bin/poc-daemon/context.rs
index d4b4987..ff65a3a 100644
--- a/src/bin/poc-daemon/context.rs
+++ b/src/bin/poc-daemon/context.rs
@@ -50,7 +50,7 @@ pub fn git_context() -> String {
     }
     let ctx = parts.join(" | ");
     if ctx.len() > 300 {
-        ctx[..300].to_string()
+        ctx.chars().take(300).collect()
     } else {
         ctx
     }
diff --git a/src/bin/poc-daemon/notify.rs b/src/bin/poc-daemon/notify.rs
index adc2520..b91c723 100644
--- a/src/bin/poc-daemon/notify.rs
+++ b/src/bin/poc-daemon/notify.rs
@@ -169,7 +169,7 @@ impl NotifyState {
 
         info!(
             "notification: type={ntype} urgency={urgency} threshold={threshold} msg={}",
-            &message[..message.len().min(80)]
+            message.chars().take(80).collect::<String>()
         );
 
         self.pending.push(Notification {
diff --git a/src/bin/poc-daemon/tmux.rs b/src/bin/poc-daemon/tmux.rs
index b85dd4b..afd5417 100644
--- a/src/bin/poc-daemon/tmux.rs
+++ b/src/bin/poc-daemon/tmux.rs
@@ -32,7 +32,8 @@ pub fn find_claude_pane() -> Option<String> {
 ///
 /// Sequence: Escape q C-c C-u (clear input), wait, type message, Enter.
 pub fn send_prompt(pane: &str, msg: &str) -> bool {
-    info!("SEND [{pane}]: {}...", &msg[..msg.len().min(100)]);
+    let preview: String = msg.chars().take(100).collect();
+    info!("SEND [{pane}]: {preview}...");
 
     let send = |keys: &[&str]| {
         Command::new("tmux")