feat(term): replace vterm with ghostel as the terminal engine

I swapped the terminal engine from vterm to ghostel (libghostty-vt) everywhere. term-config replaces vterm-config (the F12 terminal, the C-; x menu, tmux history capture), and ai-term replaces ai-vterm (the F9 Claude-agent launcher). ghostel renders the agent TUI without vterm's flicker under heavy streaming, and one engine now covers every terminal workflow.

Two behavior changes fall out of the swap. F9 launches in a terminal frame now: ghostel renders in TTY frames, so the old GUI-only guard is gone. Terminal windows no longer dim when unfocused: ghostel resolves its palette into the native module per-terminal, so there's no per-window color hook to dim through the way vterm had.

auto-dim drops its vterm color-advice path, the dashboard Terminal button launches ghostel, and the vterm and vterm-toggle packages are removed. The tmux pane-history and copy-mode machinery carried over unchanged. It keys on the pty tty, which ghostel exposes.

1 files changed, 0 insertions, 78 deletions

diff --git a/tests/test-ai-vterm--terminal-guard.el b/tests/test-ai-vterm--terminal-guard.el
deleted file mode 100644
index 5a7971bf..00000000
--- a/tests/test-ai-vterm--terminal-guard.el
+++ /dev/null
@@ -1,78 +0,0 @@
-;;; test-ai-vterm--terminal-guard.el --- Tests for the terminal-frame guard -*- lexical-binding: t; -*-
-
-;;; Commentary:
-;; AI-vterm launches a graphical vterm side window, so it is GUI-only.
-;; `cj/--ai-vterm-refuse-in-terminal' signals a `user-error' when the
-;; current frame is a terminal frame; each interactive entry point
-;; (`cj/ai-vterm', `cj/ai-vterm-pick-project', `cj/ai-vterm-close')
-;; calls it first so F9 and friends decline -- with a message -- in a
-;; terminal frame instead of launching a vterm.  The check is per-frame
-;; at command time, not at load, so a daemon serving both GUI and
-;; terminal frames keeps the launcher working in its GUI frames.
-;;
-;; `env-terminal-p' is mocked so the tests are deterministic regardless
-;; of whether the run itself is graphical (batch runs are terminal).
-
-;;; Code:
-
-(require 'ert)
-(require 'cl-lib)
-
-(add-to-list 'load-path (expand-file-name "modules" user-emacs-directory))
-(add-to-list 'load-path (expand-file-name "tests" user-emacs-directory))
-(require 'ai-vterm)
-
-;; ---------------------------- the guard helper ----------------------------
-
-(ert-deftest test-ai-vterm--refuse-in-terminal-errors-in-terminal-frame ()
-  "Error: terminal frame -> `user-error', so the command declines."
-  (cl-letf (((symbol-function 'env-terminal-p) (lambda () t)))
-    (should-error (cj/--ai-vterm-refuse-in-terminal) :type 'user-error)))
-
-(ert-deftest test-ai-vterm--refuse-in-terminal-passes-in-gui-frame ()
-  "Normal: GUI frame -> returns nil, no error, command proceeds."
-  (cl-letf (((symbol-function 'env-terminal-p) (lambda () nil)))
-    (should-not (cj/--ai-vterm-refuse-in-terminal))))
-
-;; ------------------- the three interactive entry points -------------------
-
-(ert-deftest test-ai-vterm-f9-declines-in-terminal-without-dispatching ()
-  "Error: F9 in a terminal frame errors and never reaches dispatch."
-  (let ((dispatched nil))
-    (cl-letf (((symbol-function 'env-terminal-p) (lambda () t))
-              ((symbol-function 'cj/--ai-vterm-dispatch)
-               (lambda () (setq dispatched t) '(pick-project))))
-      (should-error (cj/ai-vterm) :type 'user-error)
-      (should-not dispatched))))
-
-(ert-deftest test-ai-vterm-pick-project-declines-in-terminal-without-prompting ()
-  "Error: C-F9 in a terminal frame errors and never reaches the picker."
-  (let ((prompted nil))
-    (cl-letf (((symbol-function 'env-terminal-p) (lambda () t))
-              ((symbol-function 'cj/--ai-vterm-pick-project)
-               (lambda () (setq prompted t) "/tmp")))
-      (should-error (cj/ai-vterm-pick-project) :type 'user-error)
-      (should-not prompted))))
-
-(ert-deftest test-ai-vterm-close-declines-in-terminal-without-targeting ()
-  "Error: M-F9 in a terminal frame errors and never reaches close-target."
-  (let ((targeted nil))
-    (cl-letf (((symbol-function 'env-terminal-p) (lambda () t))
-              ((symbol-function 'cj/--ai-vterm-close-target)
-               (lambda () (setq targeted t) nil)))
-      (should-error (cj/ai-vterm-close) :type 'user-error)
-      (should-not targeted))))
-
-(ert-deftest test-ai-vterm-f9-passes-guard-in-gui-frame ()
-  "Normal: F9 in a GUI frame passes the guard and reaches dispatch."
-  (let ((dispatched nil))
-    (cl-letf (((symbol-function 'env-terminal-p) (lambda () nil))
-              ((symbol-function 'cj/--ai-vterm-dispatch)
-               (lambda () (setq dispatched t) '(pick-project)))
-              ((symbol-function 'cj/ai-vterm-pick-project)
-               (lambda (&optional _arg) nil)))
-      (cj/ai-vterm)
-      (should dispatched))))
-
-(provide 'test-ai-vterm--terminal-guard)
-;;; test-ai-vterm--terminal-guard.el ends here