refactor: clear six byte-compile warnings across four modules

- org-agenda-frame declared two of its own functions with declare-function.
- Same-file forward refs resolve at end of compile, so those were redundant.
- Worse, the declared empty arglist overrode safe-redo's real (&optional frame).
- That silently disabled arg-count checking on it; removed both declarations.
- music-config and video-audio-recording referenced three vars before their defvars.
- Added forward declarations so each compiles as a dynamic binding.
- dashboard declared el special, which made the section macro's own binding shadow it.
- Removed that declaration; el is the macro's lexical binding and resolves cleanly.
- Declared wttrin, the last undefined-function reference in the launcher table.

1 files changed, 4 insertions, 0 deletions

diff --git a/modules/video-audio-recording-capture.el b/modules/video-audio-recording-capture.el
index 7b71d54f..a56a5906 100644
--- a/modules/video-audio-recording-capture.el
+++ b/modules/video-audio-recording-capture.el
@@ -56,6 +56,10 @@ Checks if process is actually alive, not just if variable is set."
 
 ;;; Process Lifecycle (Sentinel and Graceful Shutdown)
 
+;; Forward declaration: the real `defvar' is defined below with the other
+;; recording thresholds.  Declared special here so this reference compiles clean.
+(defvar cj/recording-start-fail-threshold)
+
 (defun cj/recording-process-sentinel (process event)
   "Sentinel for recording processes — handles unexpected exits.
 PROCESS is the ffmpeg shell process, EVENT describes what happened.