refactor(system-utils): major refactoring / adding tests

Theme:
Modularize system-utilities into separate modules.
Clean up any typos, buts, and unused variables.
Add some initial ERT tests for new modules created.

Changes:
- Extract file handling into its own module (file-config)
- Extract keyboard macro management into its own module (keyboard-macros)
- Extract buffer burying (instead of killing) into its own module (undead-buffers)
- Extract all date/time config into its own module (chrono-tools)
- Moved keybinding discovery functionality and help into keybindings module
- Combine flyspell and abbrev (spell-check and autocorrect) to flyspell-and-abbrev.el
- Rename epa-config.el to auth-config.el for auth-source and epa settings.
- Refactor `cj/kill-other-window` for more accurate buffer handling.
- Include "*ert*" in the default bury (don't kill) list as killing it kills test runs.
- Bind C-c M-m to inhibit-mouse-mode
- Remove the unused ledger-file variable in user-constants.el.
- Removed obsolete C-x x m, C-x x r, and C-x x d key mappings.
- C-; b r to call cj/rename-buffer-and-file instead of typo’d function
- Other purely cosmetic comment changes to system-utils.el
ERT tests:
- Rename ERT test definitions to include module scopes (file-config, keyboard-macros)
- Add an ERT test for the timer bell's existence.
- Add ERT tests to cover `cj/kill-buffer-or-bury-alive`, prefix-arg behavior, window-killing commands, and bulk operations.
- Add test `authinfo-file` exists Missing authinfo triggers a debug message
- Add test that `gpg2` executable is on the user’s PATH
- Remove outdated authinfo test.
- Add “Run these tests” note where missing.

1 files changed, 57 insertions, 0 deletions

diff --git a/modules/auth-config.el b/modules/auth-config.el
new file mode 100644
index 000000000..43849f20f
--- /dev/null
+++ b/modules/auth-config.el
@@ -0,0 +1,57 @@
+;; auth-config.el --- Configuration for Authentication Utilities -*- lexical-binding: t; -*-
+;; author Craig Jennings <c@cjennings.net>
+
+;;; Commentary:
+;;
+;; Configuration for Emacs authentication and GPG integration:
+
+;; • auth-source
+;;   – Forces use of your default authinfo file
+;;   – Disable external GPG agent in favor of Emacs’s own prompt
+;;   – Enable auth-source debug messages
+
+;; • Easy PG Assistant (epa)
+;;   – Force using the ‘gpg2’ executable for encryption/decryption operations
+
+;;; Code:
+
+(require 'user-constants) ;; defines authinfo-file location
+
+;; -------------------------------- Auth Sources -------------------------------
+;; auth sources settings
+
+(use-package auth-source
+  :ensure nil                   ;; built in
+  :demand t                     ;; load this package immediately
+  :config
+  (setq auth-sources `(,authinfo-file))
+  (setenv "GPG_AGENT_INFO" nil) ;; emacs use internal prompt, not gpg agent
+  (setq auth-source-debug t))   ;; echo debug info to Messages
+
+;; ----------------------------- Easy PG Assistant -----------------------------
+;; Key management, cryptographic operations on regions and files, dired
+;; integration, and automatic encryption/decryption of *.gpg files.
+
+(use-package epa
+  :ensure nil                    ;; built-in
+  :defer .5
+  :config
+  (setq epg-gpg-program "gpg2")) ;; force use gpg2 (not gpg v.1)
+
+(provide 'auth-config)
+;;; auth-config.el ends here.
+
+;; --------------------------------- ERT Tests ---------------------------------
+;; Run these tests with M-x ert RET t RET
+
+(require 'ert)
+(require 'cl-lib)
+
+(ert-deftest auth-config/authinfo-file-exists ()
+  "Verify that `authinfo-file` actually exists on disk."
+  (should (and (stringp authinfo-file)
+			   (file-exists-p authinfo-file))))
+
+(ert-deftest auth-config/gpg2-is-on-path ()
+  "Verify that the `gpg2` executable is on the user’s PATH."
+  (should (executable-find "gpg2")))