Fix compilation errors for development commands

- Fix feature gate placement for development commands
- Make struct definitions always available, only gate implementations
- Fix Self constructor usage in unit structs
- Ensure development commands compile without development feature enabled
- Fix CLI argument handling for development commands
- Project now compiles successfully in CI/CD environment

src/commands/internals.rs

@@ -9,21 +9,16 @@ use std::path::Path;
 use std::process::Command as ProcessCommand;
 use std::os::unix::fs::PermissionsExt;
 
-#[cfg(feature = "development")]
-// TODO: Re-enable when implementing real file operations
-// use {
-//     cap_std::fs::Dir,
-//     cap_std_ext::cap_tempfile,
-// };
 /// Internals command - Internal system commands for advanced operations
 pub struct InternalsCommand;
 
 impl InternalsCommand {
     pub fn new() -> Self {
-        Self
+        InternalsCommand
     }
 }
 
+#[cfg(feature = "development")]
 impl Command for InternalsCommand {
     fn execute(&self, args: &[String]) -> AptOstreeResult<()> {
         if args.is_empty() || args.contains(&"--help".to_string()) || args.contains(&"-h".to_string()) {