[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/vertical.conf

@@ -0,0 +1,34 @@
+# ----------------------------------------------------- 
+# ▄▀█ █▄░█ █ █▀▄▀█ ▄▀█ ▀█▀ █ █▀█ █▄░█
+# █▀█ █░▀█ █ █░▀░█ █▀█ ░█░ █ █▄█ █░▀█
+#
+# name "Vertical"
+# ----------------------------------------------------- 
+
+animations {
+    bezier = fluent_decel, 0, 0.2, 0.4, 1
+    bezier = easeOutCirc, 0, 0.55, 0.45, 1
+    bezier = easeOutCubic, 0.33, 1, 0.68, 1
+    bezier = easeinoutsine, 0.37, 0, 0.63, 1
+
+    # Windows
+    animation = windowsIn, 1, 1.5, easeinoutsine, popin 60% # window open
+    animation = windowsOut, 1, 1.5, easeOutCubic, popin 60% # window close.
+    animation = windowsMove, 1, 1.5, easeinoutsine, slide # everything in between, moving, dragging, resizing.
+
+    # Fading
+    animation = fade, 1, 2.5, fluent_decel
+
+	animation = fadeLayersIn, 0
+    animation = border, 0
+
+
+	# Layers
+	animation = layers, 1, 1.5, easeinoutsine, popin
+
+    # Workspaces
+    #animation = workspaces, 1, 3, fluent_decel, slidefade 30% # styles: slide, slidevert, fade, slidefade, slidefadevert
+    animation = workspaces, 1, 3, fluent_decel, slidefadevert 30% # styles: slide, slidevert, fade, slidefade, slidefadevert
+
+	animation = specialWorkspace, 1, 2, fluent_decel, slidefade 10%
+}