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/programming-standards.lisp

@@ -0,0 +1,23 @@
+(in-package :passepartout)
+
+(defun standards-git-clean-p (dir)
+  "Checks if a directory has uncommitted changes."
+  (let ((status (uiop:run-program (list "git" "-C" (namestring dir) "status" "--porcelain")
+                                 :output :string
+                                 :ignore-error-status t)))
+    (string= "" (string-trim '(#\Space #\Newline #\Tab) status))))
+
+(defun standards-lisp-verify (code)
+  "Enforces Lisp structural and semantic standards using utils-lisp."
+  (let ((result (lisp-validate code :strict t)))
+    (if (eq (getf result :status) :success)
+        t
+        (error (getf result :reason)))))
+
+(defun standards-lisp-format (code)
+  "Ensures Lisp code adheres to formatting standards."
+  (lisp-format code))
+
+(defskill :passepartout-programming-standards
+  :priority 100
+  :trigger (lambda (ctx) (declare (ignore ctx)) nil))