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

Cargo.toml

@@ -0,0 +1,32 @@
+[package]
+name        = "porthole"
+version     = "0.1.0"
+edition     = "2021"
+description = "Create and manage named SSH port forwards."
+license     = "AGPL-3+"
+
+[[bin]]
+name = "porthole"
+path = "src/main.rs"
+
+[dependencies]
+clap          = { version = "4", features = ["derive"] }
+clap_complete = "4"
+
+thiserror = "^2"
+dirs      = "6"
+
+serde      = { version = "1", features = ["derive"] }
+serde_json = "1"
+toml       = "^1"
+
+libc = "0.2"
+
+# Keep panics from corrupting a partially-written state file - abort is
+# fine for a CLI/supervisor as there's no long-lived in-process state to
+# unwind (state lives on disk and is written atomically, see src/atomic.rs).
+[profile.release]
+panic         = "abort"
+lto           = true
+opt-level     = 3
+codegen-units = 1