v0.8.0: TUI stabilization, command palette reverse-video highlight, hint bar redesign

- ROADMAP: consolidate all TUI work under v0.8.0 (removed premature
  v0.9.0/v0.10.x labels), restored original v0.9.0 eval harness plan
- channel-tui-view.org: Emacs-style reverse-video cursor (swap fg/bg
  instead of drawing █), hint bar now shows F:focus/MCP:count on left
  and token gauge + keybindings on right, sidebar reorganized to show
  GATE TRACE, RULES + BLOCK COUNT, COST, FILES panels
- channel-tui-main.org: command palette selection now uses reverse-video
  highlight (bg-input fg on input-fg bg, matching cursor style), fixed
  cond order so sel-p is checked before cat (all items had :category
  making sel-p unreachable), added session-cost extraction from daemon
- passepartout: export COLORTERM=truecolor for modern backend detection

lisp/channel-cli.lisp

@@ -0,0 +1,35 @@
+(in-package :passepartout)
+
+(defun channel-cli-input (text)
+  "Processes raw text from the command line."
+  (stimulus-inject (list :type :EVENT 
+                         :payload (list :sensor :user-input :text text) 
+                         :meta (list :source :CLI))))
+
+(defskill :passepartout-channel-cli
+  :priority 100
+  :trigger (lambda (ctx) (eq (getf (getf ctx :meta) :source) :CLI))
+  :deterministic (lambda (action ctx) (declare (ignore ctx)) action))
+
+(eval-when (:compile-toplevel :load-toplevel :execute)
+  (ql:quickload :fiveam :silent t))
+
+(defpackage :passepartout-channel-cli-tests
+  (:use :cl :passepartout)
+  (:export #:cli-suite))
+
+(in-package :passepartout-channel-cli-tests)
+
+(fiveam:def-suite cli-suite :description "Verification of the CLI Gateway")
+(fiveam:in-suite cli-suite)
+
+(fiveam:test test-channel-cli-input-format
+  "Contract 1: channel-cli-input injects a properly formed signal without error."
+  (handler-case
+      (progn (channel-cli-input "hello") (fiveam:pass))
+    (error (c)
+      (fiveam:fail "channel-cli-input crashed: ~a" c))))
+
+(handler-case
+    (progn (channel-cli-input "test-load") (log-message "CLI: Load-time test OK"))
+  (error (c) (log-message "CLI: Load-time test FAILED: ~a" c)))