dwm: parches restartsig, preserveonrestart, statuscmd-nosignal y swallow

- Mod+Shift+r reinicia dwm sin cerrar ventanas y cada una sigue en su tag
- Clics en la barra: red (nmtui), volumen (pavucontrol, silenciar, micro,
  rueda) y bluetooth (blueman, encender/apagar)
- swallow: lo que se abre desde st sustituye a la terminal
- Reglas: flotan centradas pavucontrol, blueman, nmtui y ventanas de Firefox

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01MymT1wzMgXhfC3ZwHqNAVF

dwm/dwm.1

@@ -142,6 +142,9 @@ Add/remove all windows with nth tag to/from the view.
 .TP
 .B Mod1\-Shift\-q
 Quit dwm.
+.TP
+.B Mod1\-Control\-Shift\-q
+Restart dwm.
 .SS Mouse commands
 .TP
 .B Mod1\-Button1
@@ -155,6 +158,13 @@ Resize focused window while dragging. Tiled windows will be toggled to the float
 .SH CUSTOMIZATION
 dwm is customized by creating a custom config.h and (re)compiling the source
 code. This keeps it fast, secure and simple.
+.SH SIGNALS
+.TP
+.B SIGHUP - 1
+Restart the dwm process.
+.TP
+.B SIGTERM - 15
+Cleanly terminate the dwm process.
 .SH SEE ALSO
 .BR dmenu (1),
 .BR st (1)