[Sync] adopt unified stow layout from the private repo

Mirrors the private dots tree at 900bdda: one shared base plus per-host
overlays, replacing the old flat .config/ layout (last synced 2026-06-28).

- packages: common/ gui/ wm/ lw/ fl/ + install.sh and bin/ tooling (dotsync,
  reconcile-hyde.sh)
- new README (layout, deploy order, HyDE dependency), plus ToDo.md and
  HYDE-UPDATE.md
- current HyDE waybar rig (layouts/, cava), pi agent extensions, claude/
  config, tmux, presenterm, aichat roles
- drops stale duplicates and generated cruft that should never have been
  tracked: the second top-level .pi/ copy, btop.log, zellij config.kdl.bak,
  fish_variables, nvim codecompanion.lua
- .pi/agent/auth.json is gitignored now; auth.json.example ships instead
- fl/ and wm/ hypr themes/ stay untracked (HyDE-generated per machine, per
  the root .gitignore)

gui/.config/kitty/runners.conf

@@ -0,0 +1,25 @@
+# run with `kitty --session ~/.config/kitty/runners.conf`
+
+##### TAB Logs #####
+new_tab logs
+layout splits
+
+cd ~/projects/wingman/wm-clients/c2/c2-main/
+
+# --hold keeps the window open if the process crashes
+launch --var window=first --hold pnpm dev
+
+launch --location=hsplit lazydocker
+# resize_window wider 120
+
+
+##### TAB Runners #####
+new_tab runners
+layout splits
+
+launch --var window=first react-devtools
+
+cd ~/software/wmclient/
+
+launch --location=hsplit --hold ./wmsimulator.sh
+resize_window taller 120