refactor: Use cj/log-silently for debug messages

Converted debug/informational messages to use cj/log-silently instead of
message across multiple modules. These are automatic initialization or
background task messages that don't need minibuffer display but should
still be logged to *Messages* buffer.

Changes:
- org-agenda-config.el: Cache build/hit messages (4 messages)
- org-refile-config.el: Cache build/hit + mode switching (5 messages)
- org-export-config.el: reveal.js download message (1 message)
- auth-config.el: oauth2-auto cache fix message (1 message)
- quick-video-capture.el: initialization message (1 message)

All modules now require system-lib for cj/log-silently function.
Keeps UI clean while maintaining debuggability.

1 files changed, 3 insertions, 1 deletions

diff --git a/modules/org-export-config.el b/modules/org-export-config.el
index 43329cc3..612b80cb 100644
--- a/modules/org-export-config.el
+++ b/modules/org-export-config.el
@@ -24,6 +24,8 @@
 ;;
 ;;; Code:
 
+(require 'system-lib)
+
 ;; --------------------------------- Org Export --------------------------------
 
 (use-package ox
@@ -112,7 +114,7 @@
 			  (variable . "transition=slide")
 			  (variable . "slideNumber=true"))))
 	  (unless (file-exists-p reveal-dir)
-		(message "Downloading reveal.js...")
+		(cj/log-silently "Downloading reveal.js...")
 		(shell-command
 		 (format "git clone https://github.com/hakimel/reveal.js.git %s" reveal-dir)))
 	  (org-pandoc-export-to-revealjs)))