fix(pyenv): load managed Python in every zsh

The pyenv fragment lived in the interactive overlay, so agents and zsh -c fell back to system Python. Install it through the always-on fragment path and keep XDG destinations aligned with the loader.

patch.sh

@@ -23,7 +23,7 @@ for arg in "$@"; do
             exit 1
         fi
         rel="${arg}.zsh"
-        destination="$HOME/.config/${arg}.zsh"
+        destination="${XDG_CONFIG_HOME:-$HOME/.config}/${arg}.zsh"
     else
         if [[ -z "$arg" || "$arg" == *[![:alnum:]_-]* ]]; then
             echo "Invalid config name: $arg" >&2
@@ -34,7 +34,7 @@ for arg in "$@"; do
     fi
 
     mkdir -p "$(dirname "$destination")"
-    temporary=$(mktemp "$HOME/.config/.easyzsh-XXXXXX")
+    temporary=$(mktemp "$(dirname "$destination")/.easyzsh-XXXXXX")
     trap 'rm -f "$temporary"' EXIT
 
     if ! curl -fsSL "${BASE_URL}/${rel}" -o "$temporary"; then