TUI: colored rendering + LLM routing fix + /eval REPL

- Colored chat: green user, white agent, yellow system, cyan input
- Clean handshake display (Connected v0.2.0)
- LLM routing fix: action-dispatch routes to :tui when reply-stream present
- /eval command works with proper *package* binding
- Swank REPL on port 4006 (configurable)
- Backspace support with Croatoan integer key codes
- Confirmed end-to-end: type message → LLM responds → displayed in TUI
- Chat messages truncated with :n to prevent overlap

lisp/gateway-tui.lisp

@@ -31,12 +31,13 @@
   (clear win)
   (box win 0 0)
   (add-string win
-   (format nil " Passepartout  ~a  [~a]  msgs:~a"
+   (format nil " Passepartout  ~a  [~a]  msgs:~a  scroll:~a"
            (if (st :connected) "● Connected" "○ Disconnected")
            (string-upcase (string (st :mode)))
-           (length (st :messages)))
-   :y 1 :x 1)
-  (add-string win (format nil " ~a" (now)) :y 2 :x 1)
+           (length (st :messages))
+           (if (> (st :scroll-offset) 0) (format nil "~a↑" (st :scroll-offset)) "0"))
+   :y 1 :x 1 :fgcolor (if (st :connected) :green :red))
+  (add-string win (format nil " ~a" (now)) :y 2 :x 1 :fgcolor :yellow)
   (refresh win))
 
 (defun view-chat (win h)
@@ -52,20 +53,28 @@
           while (< y (1- h))
           do (let ((msg (nth i msgs)))
                (let* ((role (getf msg :role))
-                      (content (or (getf msg :content) ""))
+                      (content (getf msg :content))
                       (time (or (getf msg :time) ""))
-                      (marker (case role (:user ">") (t " ")))
-                      (line (format nil "~a [~a] ~a" marker time content)))
-                 (add-string win line :y y :x 1 :n (1- w))
+                      (label (case role
+                               (:user (format nil "⬆ [~a] ~a" time content))
+                               (:agent (format nil "⬇ [~a] ~a" time content))
+                               (:system (format nil "   [~a] ~a" time content))
+                               (t (format nil "   [~a] ~a" time content))))
+                      (color (case role
+                               (:user :green)
+                               (:agent :white)
+                               (:system :yellow)
+                               (t :white))))
+                 (add-string win label :y y :x 1 :n (1- w) :fgcolor color)
                  (incf y)))))
   (refresh win))
 
 (defun view-input (win)
-  (clear win)
   (let* ((text (input-string))
          (w (or (width win) 78))
          (clip (min (length text) (1- w))))
-    (add-string win text :y 0 :x 0 :n clip)
+    (clear win)
+    (add-string win (format nil "~a " text) :y 0 :x 0 :n (1- w) :fgcolor :cyan)
     (setf (cursor-position win) (list 0 clip)))
   (refresh win))
 
@@ -139,10 +148,14 @@
            (setf (st :dirty) (list nil nil t))))))))
 
 (defun on-daemon-msg (msg)
-  (let ((text (getf (getf msg :payload) :text)))
-    (if text
-        (add-msg :agent text)
-        (add-msg :agent (format nil "~a" msg)))))
+  (let* ((payload (getf msg :payload))
+         (text (getf payload :text))
+         (action (getf payload :action)))
+    (cond
+      (text (add-msg :agent text))
+      ((eq action :handshake)
+       (add-msg :system (format nil "Connected v~a" (getf payload :version))))
+      (t (add-msg :agent (format nil "~a" msg))))))
 
 (defun send-daemon (msg)
   (let ((s (st :stream)))