[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)

common/.config/misc/tuis.txt

@@ -0,0 +1,72 @@
+browsh
+wiki-tui
+wikiman
+yazi
+tdf
+dysk
+dust
+ncdu
+duf
+systemctl-tui
+btop
+bandwhich
+mtr
+gping
+bmon
+profanity
+nmtui
+impala
+bluetui
+sshm
+aichat
+tt
+gittype
+toofan
+pastel
+hexyl
+tmux
+zellij
+nvim
+vim
+tetrigo
+pyradio
+px7-radio
+kew
+cmatrix
+neo-matrix
+cava
+pipes-rs
+asciiquarium
+cbonsai
+tclock
+hunk
+gittop
+lazygit
+lazyjournal
+lazydocker
+lazyrsync
+ctop
+colima
+dive
+asciinema
+posting
+serie
+clx
+whosthere
+voxcii
+bookokrat
+tennis
+llmfit
+termdraw
+torlink
+riptide
+quien
+eilmeldung
+calcure
+weathr
+hyprmon
+hulak
+netwatch
+gpk
+circumflex
+darya