feat(cli): add ls alias for the list command

CHANGELOG.md

@@ -2,6 +2,10 @@
 
 ## [Unreleased]
 
+### Added
+
+- `agent-tty ls` is now a short alias for `agent-tty list`. Like the `d`→`dashboard` alias, it is an explicit alias (not prefix matching), so it resolves unambiguously to `list` and is unaffected by the other commands ([#135](https://github.com/coder/agent-tty/pull/135)).
+
 ## [v0.4.0] - 2026-06-08
 
 ### Added

src/cli/main.ts

@@ -354,6 +354,7 @@ async function main(): Promise<void> {
 
   program
     .command('list')
+    .alias('ls')
     .description('List sessions')
     .option('--all', 'Include exited sessions', false)
     .option('--json', 'Emit a JSON command envelope', false)

test/integration/cli.test.ts

@@ -197,6 +197,16 @@ describe('CLI integration', () => {
     );
   });
 
+  it('resolves the `ls` alias to the list command', () => {
+    // `--help` exits before the action runs, so this exercises alias
+    // resolution without touching the Home Registry or reconciling sessions.
+    const result = runCli(['ls', '--help'], testEnv());
+
+    expect(result.status).toBe(0);
+    expect(result.stderr).toBe('');
+    expect(result.stdout).toContain('List sessions');
+  });
+
   it('accepts --append-newline for type', () => {
     const result = runCli(
       ['type', 'session-01', 'hello', '--append-newline', '--json'],