feat: add zellij config with gruvbox-dark theme

Migrate from tmux to zellij. Most tmux plugin features are zellij
built-ins: session resurrection, mouse mode, clipboard integration,
pane/tab management, session manager, and search.

- gruvbox-dark theme (built-in, replaces tmux-gruvbox plugin)
- serialize_pane_viewport for full session resurrection
- copy_on_select with wl-copy for Wayland clipboard
- 50k line scrollback buffer
- attach_to_session for auto-reattach

1 files changed, 22 insertions, 0 deletions

diff --git a/home/.config/zellij/config.kdl b/home/.config/zellij/config.kdl
new file mode 100644
index 0000000..3d7f976
--- /dev/null
+++ b/home/.config/zellij/config.kdl
@@ -0,0 +1,22 @@
+// Zellij configuration
+// See: https://zellij.dev/documentation/options
+
+// Gruvbox dark theme (built-in)
+theme "gruvbox-dark"
+
+// Session resurrection: serialize layout, panes, and running commands to disk.
+// Exited sessions can be listed and resurrected from the session-manager.
+// session_serialization is already true by default, but we also want viewport.
+serialize_pane_viewport true
+
+// Scrollback: open in $EDITOR with Ctrl-s → e
+scroll_buffer_size 50000
+
+// Clipboard: copy to system clipboard on selection
+copy_on_select true
+
+// Use wl-copy for Wayland clipboard (fallback from OSC 52)
+copy_command "wl-copy"
+
+// Auto-attach to existing session with the same name instead of erroring
+attach_to_session true