feat(tests): add integration tests for inhibit command parsing

Add integration tests that verify the inhibit command parses arguments correctly, covering normal execution, daemon flag usage, and default values for why and who. This provides regression protection for CLI parsing behavior.

- New Feature: Integration tests for inhibit subcommand parsing

tests/inhibit.rs

@@ -0,0 +1,43 @@
+use clap::Parser;
+use lapctl::cli::{Cli, Commands};
+
+#[test]
+fn test_inhibit_cli_parsing() {
+    let args = vec!["lapctl", "inhibit", "sleep", "10", "--why", "testing"];
+    let cli = Cli::parse_from(args);
+
+    if let Commands::Inhibit {
+        command,
+        why,
+        who,
+        daemon,
+    } = cli.command
+    {
+        assert_eq!(command, vec!["sleep".to_string(), "10".to_string()]);
+        assert_eq!(why, "testing");
+        assert_eq!(who, "lapctl"); // default value
+        assert!(!daemon);
+    } else {
+        panic!("Command should be Inhibit");
+    }
+}
+
+#[test]
+fn test_inhibit_daemon_parsing() {
+    let args = vec!["lapctl", "inhibit", "--daemon"];
+    let cli = Cli::parse_from(args);
+
+    if let Commands::Inhibit {
+        command,
+        why,
+        who,
+        daemon,
+    } = cli.command
+    {
+        assert!(command.is_empty());
+        assert_eq!(why, "lapctl inhibiting sleep"); // default value
+        assert!(daemon);
+    } else {
+        panic!("Command should be Inhibit");
+    }
+}