Squashed (migration)

(initial) Align formatting and code style to project standards.
Add live_test.sh: full automated integration suite against a real SSH server
Show [name] for optional positionals, allow filtering import by name too
Fix transfer rough edges: value-name hint, identity warnings, single-profile export
Add transfer subcommand for bulk profile export/import
Harden forced ssh flags: accept-new host keys, block multiplexing, tighten identity auth
release build opts
Standardize error messages, formatting, and code style. Refine --help text for consistency. Update comments for clarity and tone alignment.
Normalize user-facing --help text for tone/format consistency
Show real mapping grammar in --help, make --via repeatable, trim comments
Match vmic's custom top-level --help renderer
Implement porthole v0.1: profiles, supervised open/close, reconnect
Fix --via/-J grammar and --force process-group kill
added .gitignore

src/commands/add.rs

@@ -0,0 +1,22 @@
+use crate::cli::AddArgs;
+use crate::commands::edits_from_mapping;
+use crate::error::{PortholeError, Result};
+use crate::profile::{self, Profile};
+use crate::ui;
+
+pub fn run(args: AddArgs) -> Result<()> {
+    profile::require_valid_name(&args.name)?;
+    let name = profile::normalize(&args.name);
+
+    if profile::exists(&name) {
+        return Err(PortholeError::AlreadyExists(name));
+    }
+
+    let edits = edits_from_mapping(&args.mapping);
+    let new_profile = Profile::new(name.clone(), &edits)?;
+    profile::save(&new_profile)?;
+
+    ui::ok(&format!("Saved profile '{name}' ({} {}).", new_profile.kind.label(), new_profile.mapping));
+    println!("  Run 'porthole open {name}' to start it.");
+    Ok(())
+}