feat(cli): hint Ctrl+G restart after auto-upgrade

src/help.rs

@@ -440,6 +440,7 @@ Switch channel and update:
 Auto-update is on by default. On startup a background process checks
 GitHub Releases, and while a coding agent is running it rechecks every
 few hours, then installs in place. The next `{bin}` uses the new build.
+Press Ctrl+G in the agent to restart and resume after an auto-upgrade.
 
   auto_update: false     in ~/.anyrouter/config.yaml to turn it off
   channel: beta          follow main (GitHub prereleases)
@@ -458,7 +459,7 @@ While installing, a spinner ticks with the from → to versions and channel:
   ⠋ Updating v0.1.11 -> v0.1.99 (stable channel)
   ✔ Updated to v0.1.99
 
-  Run anyr to start using the new version.
+  Run anyr to start using the new version. Press Ctrl+G in the agent to restart and resume.
 
 --check reports current vs latest without installing.
 --fixture <path> / ANYR_RELEASES_JSON skips the network (tests / dry-run).

src/spinner.rs

@@ -12,7 +12,11 @@ use crate::term::{self, BLUE, SUCCESS};
 /// Braille spinner frames. Consecutive indices are visually distinct.
 pub const FRAMES: &[&str] = &["⠋", "⠙", "⠹", "⠸", "⠼", "⠴", "⠦", "⠧", "⠇", "⠏"];
 
-pub const START_USING: &str = "Run anyr to start using the new version.";
+/// After an in-place upgrade, a running agent still has the old binary in memory.
+pub const RESTART_RESUME_HINT: &str = "Press Ctrl+G in the agent to restart and resume.";
+
+pub const START_USING: &str =
+    "Run anyr to start using the new version. Press Ctrl+G in the agent to restart and resume.";
 
 const DEFAULT_INTERVAL_MS: u64 = 80;
 const DEFAULT_MIN_TICKS: usize = 4;
@@ -311,5 +315,7 @@ mod tests {
         );
         assert!(text.contains("✔ Would update to v0.1.99"), "{text}");
         assert!(text.contains(START_USING), "{text}");
+        assert!(text.contains(RESTART_RESUME_HINT), "{text}");
+        assert!(text.contains("Ctrl+G"), "{text}");
     }
 }

src/upgrade.rs

@@ -547,7 +547,8 @@ fn print_pending_notice(env: &BTreeMap<String, String>) {
     }
     let running = VERSION.trim().strip_prefix('v').unwrap_or(VERSION.trim());
     if ver == running {
-        eprintln!("anyr: updated to {ver}");
+        eprintln!("anyr: auto-updated to {ver}");
+        eprintln!("{}", crate::spinner::RESTART_RESUME_HINT);
         let _ = fs::remove_file(&path);
     }
 }
@@ -923,6 +924,13 @@ mod tests {
         assert!(!auto_update_enabled(&env));
     }
 
+    #[test]
+    fn pending_notice_mentions_auto_update_and_ctrl_g() {
+        assert!(crate::spinner::RESTART_RESUME_HINT.contains("Ctrl+G"));
+        assert!(crate::spinner::RESTART_RESUME_HINT.contains("restart and resume"));
+        assert!(crate::spinner::START_USING.contains("Ctrl+G"));
+    }
+
     fn parsed_check() -> ParsedArgs {
         ParsedArgs {
             command: "upgrade".into(),

tests/cli.rs

@@ -910,6 +910,10 @@ fn upgrade_help_mentions_channel_stable_beta() {
         stdout.contains("Run anyr to start using the new version."),
         "upgrade help should show the post-update hint, got:\n{stdout}"
     );
+    assert!(
+        stdout.contains("Ctrl+G") && stdout.contains("restart and resume"),
+        "upgrade help should mention Ctrl+G restart/resume after auto-upgrade:\n{stdout}"
+    );
 }
 
 #[test]