Settle on v1 setup method. Test run completed successfully from bootstrap to service setup.

- Refactor dnsmasq configuration and scripts for improved variable handling and clarity
- Updated dnsmasq configuration files to use direct variable references instead of data source functions for better readability.
- Modified setup scripts to ensure they are run from the correct environment and directory, checking for the WC_HOME variable.
- Changed paths in README and scripts to reflect the new directory structure.
- Enhanced error handling in setup scripts to provide clearer guidance on required configurations.
- Adjusted kernel and initramfs URLs in boot.ipxe to use the updated variable references.

setup/cluster-nodes/create-installer-image.sh

@@ -0,0 +1,53 @@
+#!/bin/bash
+
+# Talos custom installer image creation script
+# This script generates installer image URLs using the centralized schematic ID
+
+set -euo pipefail
+
+# Check if WC_HOME is set
+if [ -z "${WC_HOME:-}" ]; then
+    echo "Error: WC_HOME environment variable not set. Run \`source ./env.sh\`."
+    exit 1
+fi
+
+# Get Talos version and schematic ID from config
+TALOS_VERSION=$(wild-config cluster.nodes.talos.version)
+SCHEMATIC_ID=$(wild-config cluster.nodes.talos.schematicId)
+
+echo "Creating custom Talos installer image..."
+echo "Talos version: $TALOS_VERSION"
+
+# Check if schematic ID exists
+if [ -z "$SCHEMATIC_ID" ] || [ "$SCHEMATIC_ID" = "null" ]; then
+    echo "Error: No schematic ID found in config.yaml"
+    echo "Run 'wild-talos-schema' first to upload schematic and get ID"
+    exit 1
+fi
+
+echo "Schematic ID: $SCHEMATIC_ID"
+echo ""
+echo "Schematic includes:"
+yq eval '.cluster.nodes.talos.schematic.customization.systemExtensions.officialExtensions[]' "${WC_HOME}/config.yaml" | sed 's/^/  - /'
+echo ""
+
+# Generate installer image URL
+INSTALLER_URL="factory.talos.dev/metal-installer/$SCHEMATIC_ID:$TALOS_VERSION"
+
+echo ""
+echo "🎉 Custom installer image URL generated!"
+echo ""
+echo "Installer URL: $INSTALLER_URL"
+echo ""
+echo "Usage in machine configuration:"
+echo "machine:"
+echo "  install:"
+echo "    image: $INSTALLER_URL"
+echo ""
+echo "Next steps:"
+echo "1. Update machine config templates with this installer URL"
+echo "2. Regenerate machine configurations"
+echo "3. Apply to existing nodes to trigger installation with extensions"
+echo ""
+echo "To update templates automatically, run:"
+echo "  sed -i 's|image:.*|image: $INSTALLER_URL|' patch.templates/controlplane-node-*.yaml"