v0.8.0: cl-tty input primitives, on-key keyword dispatch, XDG tangle paths, remove croatoan

- read-raw-byte: sb-unix:unix-read instead of read-char-no-hang
- raw-mode: sb-posix:tcsetattr instead of stty
- read-event: no probe-file /dev/stdin guard
- on-key: accepts &key ctrl alt shift code
- .asd: :croatoan dropped, :cl-tty added
- script: detection fix (empty lisp/ -> XDG)

org/core-manifest.org

@@ -43,11 +43,11 @@ Tests are embedded directly in each module's source file — see the `* Test Sui
 
 ** TUI System
 
-The TUI is a standalone system that depends on Croatoan (ncurses bindings) in addition to the core opencortex system. It's loaded separately because Croatoan requires a terminal and is not needed for daemon-mode operation.
+The TUI is a standalone system that depends on cl-tty (pure CL terminal UI) in addition to the core system. It's loaded separately because it requires a terminal and is not needed for daemon-mode operation.
 
 #+begin_src lisp
 (defsystem :passepartout/tui
-  :depends-on (:passepartout :croatoan :usocket :bordeaux-threads)
+  :depends-on (:passepartout :cl-tty :usocket :bordeaux-threads)
   :serial t
   :components ((:file "lisp/channel-tui-state")
                (:file "lisp/channel-tui-view")