Migrate from stow to dm theme manager

Move all config files from .config/ into themes/dracula/.config/ so the
dm tool can manage them as file-level symlinks. Removes .bak file.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

.config/mako/config

@@ -1,14 +0,0 @@
-width=350
-height=110
-margin=5
-padding=10
-border-size=2
-border-radius=4
-icons=1
-max-icon-size=64
-default-timeout=5000
-text-alignment=left
-
-background-color=#282a36
-text-color=#BD93F9
-border-color=#44475A