refactor: retire unreferenced modules to an archive directory

A reachability sweep from init.el found eight .el files that nothing in the config loads or references. I moved them under archive/ (off the load-path, still tracked in git) so they stay readable and restorable rather than deleted. archive/README.org records the rule (every .el outside archive/ should be actively used) and why each file was retired.

I retired show-kill-ring, duet-config, and mu4e-org-contacts-setup from modules/, and eplot, profile-dotemacs, titlecase, titlecase-data, and edit-indirect from custom/. Retiring show-kill-ring also removed the orphaned M-K -> M-S-k translation in keyboard-compat, which had left M-K a dead key. Its tests now assert seventeen translations and guard M-K's absence.

1 files changed, 0 insertions, 19 deletions

diff --git a/modules/duet-config.el b/modules/duet-config.el
deleted file mode 100644
index 2dc7ad2e..00000000
--- a/modules/duet-config.el
+++ /dev/null
@@ -1,19 +0,0 @@
-;;; duet-config.el --- DUET dual-pane commander configuration -*- lexical-binding: t -*-
-
-;;; Commentary:
-;; Personal configuration glue for the DUET package, developed locally at
-;; ~/code/duet.  Keybindings, defcustom values, and connection storage live
-;; here; the package itself stays free of personal opinions.
-;;
-;; Not yet required from init.el — DUET is a pre-alpha skeleton.  Wire it in
-;; once Stage 1 provides usable commands.
-
-;;; Code:
-
-(use-package duet
-  :load-path "~/code/duet"
-  :ensure nil
-  :commands (duet))
-
-(provide 'duet-config)
-;;; duet-config.el ends here