fix: dynamic flake path resolution and replace env-update/sys-update aliases with scripts

features/scripts/utils/nomarchy-env-update

@@ -6,13 +6,23 @@
 
 set -e
 
+# Detect the repository location
+if [ -f "/etc/nixos/flake.nix" ]; then
+    REPO_DIR="/etc/nixos"
+elif [ -f "/etc/nomarchy/flake.nix" ]; then
+    REPO_DIR="/etc/nomarchy"
+else
+    echo "Error: Nomarchy flake repository not found in /etc/nixos or /etc/nomarchy."
+    exit 1
+fi
+
 # Use the pre-flight migration script to ensure the state is synced before evaluation
 if command -v nomarchy-preflight-migration >/dev/null 2>&1; then
     nomarchy-preflight-migration
 fi
 
 # Apply Home Manager changes from the local flake
-echo "Applying user-level changes..."
-home-manager switch --flake /etc/nixos#default --impure
+echo "Applying user-level changes from $REPO_DIR..."
+home-manager switch --flake "$REPO_DIR#default" --impure
 
 echo "Environment update complete."