[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/hypr/animations/ja.conf

@@ -0,0 +1,32 @@
+# ----------------------------------------------------- 
+# ▄▀█ █▄░█ █ █▀▄▀█ ▄▀█ ▀█▀ █ █▀█ █▄░█
+# █▀█ █░▀█ █ █░▀░█ █▀█ ░█░ █ █▄█ █░▀█
+#
+# name "Ja"
+# credit https://github.com/JaKooLit/Hyprland-Dots
+# ----------------------------------------------------- 
+
+animations {
+  enabled = yes
+
+  bezier = wind, 0.05, 0.9, 0.1, 1.05
+  bezier = winIn, 0.1, 1.1, 0.1, 1.1
+  bezier = winOut, 0.3, -0.3, 0, 1
+  bezier = liner, 1, 1, 1, 1
+  bezier = overshot, 0.05, 0.9, 0.1, 1.05
+  bezier = smoothOut, 0.5, 0, 0.99, 0.99
+  bezier = smoothIn, 0.5, -0.5, 0.68, 1.5
+  
+  animation = windows, 1, 6, wind, slide
+  animation = windowsIn, 1, 5, winIn, slide
+  animation = windowsOut, 1, 3, smoothOut, slide
+  animation = windowsMove, 1, 5, wind, slide
+  animation = border, 1, 1, liner
+  #animation = borderangle, 1, 180, liner, loop #used by rainbow borders and rotating colors
+  animation = fade, 1, 3, smoothOut
+  animation = workspaces, 1, 5, overshot
+  
+  # animations for -git or version >0.42.0
+  animation = workspacesIn, 1, 5, winIn, slide
+  animation = workspacesOut, 1, 5, winOut, slide
+}