fix: TUI flicker, bottom-anchored minibuffer, 13 color presets

Issue 1 — flickering during typing/updating:
- Wrap every frame render in DECICM sync (begin-sync/end-sync) so the
  terminal defers rendering until the entire frame is written
- Replace backend-clear (ESC[2J full clear) with draw-rect background
  fill — eliminates visible blank frame between redraws
- These two changes together eliminate all visible tearing/flicker

Issue 2 — bottom-anchored minibuffer (Emacs-style):
- Replace centered overlay dialog with bottom-anchored minibuffer
  that expands upward from the input line
- Unified command menu: Ctrl+P and / both open the same menu with
  all 35+ commands (slash + daemon), dispatch by value type
- Filter prompt at h-3 (same position as normal input),
  options listed above, grows up to 15 lines
- No full-screen dim backdrop — just clear the minibuffer area

Issue 3 — color schemes:
- Add 5 new presets: catppuccin, tokyonight, dracula, gemini, mono
- Total: 13 presets (up from 8)
- Update /theme completion list and help text

Also fixed: pre-existing unbalanced paren in tui-main (missing close)

org/channel-tui-state.org

@@ -125,8 +125,60 @@ All state mutation flows through event handlers in the controller.
                   :dot-connected "#2E8B57" :dot-disconnected "#CC3300"
                   :error "#CC3300"
                   :tool-running "#CC6600" :tool-done "#2E8B57" :tool-error "#CC3300"
-                  :separator "#C8B898" :accent "#CC6600" :dim "#8B7355"))
-  "8 warm theme presets.")
+                   :separator "#C8B898" :accent "#CC6600" :dim "#8B7355")
+    :catppuccin (:user-fg "#FAB387" :user-bg "#1E1E2E" :user-border "#F5A97F"
+                 :agent-header "#CBA6F7" :agent-fg "#CDD6F4"
+                 :system "#94E2D5"
+                 :input-prompt "#FAB387" :input-fg "#CDD6F4"
+                 :hint "#6C7086"
+                 :status-bg "#181825" :status-fg "#A6ADC8"
+                 :dot-connected "#A6E3A1" :dot-disconnected "#F38BA8"
+                 :error "#F38BA8"
+                 :tool-running "#FAB387" :tool-done "#A6E3A1" :tool-error "#F38BA8"
+                 :separator "#313244" :accent "#FAB387" :dim "#585B70")
+    :tokyonight (:user-fg "#FF9E64" :user-bg "#1A1B26" :user-border "#F59E4C"
+                 :agent-header "#7AA2F7" :agent-fg "#A9B1D6"
+                 :system "#73DACA"
+                 :input-prompt "#FF9E64" :input-fg "#A9B1D6"
+                 :hint "#565F89"
+                 :status-bg "#16161E" :status-fg "#9AA5CE"
+                 :dot-connected "#9ECE6A" :dot-disconnected "#DB4B4B"
+                 :error "#DB4B4B"
+                 :tool-running "#FF9E64" :tool-done "#9ECE6A" :tool-error "#DB4B4B"
+                 :separator "#292E42" :accent "#FF9E64" :dim "#444B6A")
+    :dracula (:user-fg "#FF9580" :user-bg "#1E1F2B" :user-border "#FF6E6E"
+              :agent-header "#BD93F9" :agent-fg "#F8F8F2"
+              :system "#8BE9FD"
+              :input-prompt "#FF9580" :input-fg "#F8F8F2"
+              :hint "#6272A4"
+              :status-bg "#191A24" :status-fg "#E0E0E0"
+              :dot-connected "#50FA7B" :dot-disconnected "#FF5555"
+              :error "#FF5555"
+              :tool-running "#FF9580" :tool-done "#50FA7B" :tool-error "#FF5555"
+              :separator "#34354A" :accent "#FF9580" :dim "#5A5B7A")
+    :gemini (:user-fg "#87AFFF" :user-bg "#000000" :user-border "#5F5F5F"
+             :agent-header "#D7AFFF" :agent-fg "#FFFFFF"
+             :system "#87D7D7"
+             :input-prompt "#87AFFF" :input-fg "#FFFFFF"
+             :hint "#AFAFAF"
+             :status-bg "#1A1A1A" :status-fg "#AFAFAF"
+             :dot-connected "#D7FFD7" :dot-disconnected "#FF87AF"
+             :error "#FF87AF"
+             :tool-running "#87AFFF" :tool-done "#D7FFD7" :tool-error "#FF87AF"
+             :separator "#3A3A3A" :accent "#87AFFF" :dim "#5F5F5F")
+    :mono (:user-fg "#E0E0E0" :user-bg "#1A1A1A" :user-border "#808080"
+           :agent-header "#C0C0C0" :agent-fg "#D0D0D0"
+           :system "#A0A0A0"
+           :input-prompt "#FFFFFF" :input-fg "#D0D0D0"
+           :hint "#606060"
+           :status-bg "#141414" :status-fg "#B0B0B0"
+           :dot-connected "#A0A0A0" :dot-disconnected "#808080"
+           :error "#808080"
+           :tool-running "#E0E0E0" :tool-done "#A0A0A0" :tool-error "#808080"
+           :separator "#303030" :accent "#FFFFFF" :dim "#505050"))
+  "13 warm theme presets (amber, gold, terracotta, sepia, nord-warm,
+monokai-warm, gruvbox-warm, light-amber, catppuccin, tokyonight, dracula,
+gemini, mono).")
 
 (defvar *tui-theme-current-name* :amber
   "Name of the currently active theme preset.")
@@ -294,6 +346,10 @@ All state mutation flows through event handlers in the controller.
     (:title "List Skills — Available skills"         :value (:action :list-skills)     :category :system)
     (:title "Help — Show daemon help"                :value (:action :help)           :category :help))
   "Daemon commands for the command palette (Ctrl+P).")
+
+(defun all-commands ()
+  "Merge slash commands and daemon commands into one unified list."
+  (append *slash-commands* *daemon-commands*))
 #+END_SRC
 
 ** Event Queue