refactor: clear package-lint warnings for MELPA prep

I worked through the package-lint backlog and got it to zero. Five changes:

1. Renamed six interactive debug commands from the private `chime--debug-*'
   prefix to the public `chime-debug-*' form. They were always M-x targets,
   so the private prefix was just wrong. The autoload cookies stay because
   public commands SHOULD be autoloaded. README, docstring references in
   chime.el, and the matching tests follow the rename.

2. Dropped `Version', `Package-Requires', and `Keywords' headers from
   chime-org-contacts.el. Auxiliary files in a multi-file package shouldn't
   carry their own metadata — package-lint flags it as an error because the
   headers have no effect outside the main file. The main file (chime.el)
   already declares the chime package's metadata.

3. Dropped `Keywords' from chime-debug.el for the same reason.

4. Dropped the auto-loader for the optional chime-org-contacts integration
   from chime.el. The old code used `with-eval-after-load 'org-capture' to
   pull the file in, which package-lint flags as a configuration pattern
   that doesn't belong in a package. Users who want the integration now
   require it themselves; the README shows both the plain `with-eval-after-load'
   pattern and the `use-package :after' form. chime-org-contacts.el's
   internal `with-eval-after-load' went away too — by the time the user has
   required the file, they've already gated it on org-capture being loaded,
   so the inner check is redundant.

5. Dropped the redundant `with-eval-after-load' from chime-org-contacts.el's
   activation block. The setup function still guards on
   `(boundp 'org-capture-templates)' so it's safe to require either order.

Behavioral note: this is a small breaking change for anyone whose config
relied on the auto-load. The README change spells out the migration path.

1 files changed, 10 insertions, 8 deletions

diff --git a/chime-org-contacts.el b/chime-org-contacts.el
index 73904c2..6c9e590 100644
--- a/chime-org-contacts.el
+++ b/chime-org-contacts.el
@@ -3,11 +3,12 @@
 ;; Copyright (C) 2025-2026 Craig Jennings
 
 ;; Author: Craig Jennings <c@cjennings.net>
-;; Version: 1.0.0
-;; Package-Requires: ((emacs "27.1") (org "9.0"))
-;; Keywords: calendar, org-mode, contacts
 ;; URL: https://github.com/cjennings/chime
 
+;; This file is part of the chime package.  Version, Package-Requires, and
+;; Keywords live on the main file (chime.el); auxiliary files do not repeat
+;; them per package-lint convention.
+
 ;; This program is free software: you can redistribute it and/or modify
 ;; it under the terms of the GNU General Public License as published by
 ;; the Free Software Foundation, either version 3 of the License, or
@@ -145,11 +146,12 @@ Added: %U"
 
 ;;; Activation
 
-;; Set up the capture template when org-capture is loaded,
-;; but only if chime-org-contacts-file is configured
-(with-eval-after-load 'org-capture
-  (when chime-org-contacts-file
-    (chime-org-contacts--setup-capture-template)))
+;; chime.el guards the require of this file behind its own
+;; `with-eval-after-load' on `org-capture', so by the time we get here
+;; org-capture is loaded.  Set up the template directly when the user
+;; has configured `chime-org-contacts-file'.
+(when chime-org-contacts-file
+  (chime-org-contacts--setup-capture-template))
 
 (provide 'chime-org-contacts)
 ;;; chime-org-contacts.el ends here