feat: improve depot UX and packaging workflow

- add shared terminal UI helpers for colored info/warn/success logs and yes/no prompts
- add Python build backend (PEP 517/setup.py wheel build + install) and expose python in interactive spec creation
- expand spec/build flags (post_configure, make phase targets/dirs, configure_file, no_strip, no_compress_man)
- support split-output staging with internal .depot output dirs, shell helpers (haul/subdestdir), and per-output deps/provides overrides
- improve staging with ELF auto-strip and zstd manpage compression (with opt-out flags)
- enforce runtime deps before install and support legacy lifecycle hook script names
- improve manual source handling with files/urls lists and stricter validation

src/source/extractor.rs

@@ -35,7 +35,7 @@ pub fn extract_archive(
         .and_then(|n| n.to_str())
         .unwrap_or("");
 
-    println!("Extracting: {}", filename);
+    crate::log_info!("Extracting: {}", filename);
 
     if filename.ends_with(".tar.gz") || filename.ends_with(".tgz") {
         extract_tar_gz(archive_path, &extract_path)?;
@@ -70,7 +70,7 @@ pub fn extract_archive(
         );
     }
 
-    println!("Extracted to: {}", extract_path.display());
+    crate::log_info!("Extracted to: {}", extract_path.display());
     Ok(extract_path)
 }