v0.7.0: scroll notify + autocomplete — TDD

Scroll notification: :scroll-notify flag in add-msg when scrolled up.
Autocomplete: @ file paths, /theme subcommand defaults, /focus dirs.
4 new TDD tests (6 assertions), 100% pass.
Core: 135/135 (100%).

Remaining deferred: scroll pads (needs Croatoan terminal), setup wizard (v0.8.0).

org/channel-tui-state.org

@@ -133,6 +133,7 @@ See *tui-theme-presets* for named presets (dark, light, solarized, gruvbox).")
               :messages (make-array 16 :adjustable t :fill-pointer 0)
               :scroll-offset 0 :busy nil :cursor-pos 0
               :pending-ctrl-x nil
+              :scroll-at-bottom t :scroll-notify nil
               :dirty (list nil nil nil))))
 #+end_src
 
@@ -167,6 +168,9 @@ See *tui-theme-presets* for named presets (dark, light, solarized, gruvbox).")
 
 (defun add-msg (role content &key gate-trace)
   (vector-push-extend (list :role role :content content :time (now) :gate-trace gate-trace) (st :messages))
+  ;; v0.7.0: notify when scrolled up and new msg arrives
+  (unless (st :scroll-at-bottom)
+    (setf (st :scroll-notify) t))
   (setf (st :dirty) (list t t nil)))
 #+end_src