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.

bin/wild-secret

@@ -0,0 +1,74 @@
+#!/bin/bash
+
+set -e
+set -o pipefail
+
+# Usage function
+usage() {
+    echo "Usage: wild-secret <yaml_key_path>"
+    echo ""
+    echo "Read a value from ./secrets.yaml using a YAML key path."
+    echo ""
+    echo "Examples:"
+    echo "  wild-secret 'database.password'      # Get database password"
+    echo "  wild-secret 'api.keys.github'        # Get GitHub API key"
+    echo "  wild-secret 'credentials[0].token'   # Get first credential token"
+    echo ""
+    echo "Options:"
+    echo "  -h, --help  Show this help message"
+}
+
+# Parse arguments
+while [[ $# -gt 0 ]]; do
+    case $1 in
+        -h|--help)
+            usage
+            exit 0
+            ;;
+        -*)
+            echo "Unknown option $1"
+            usage
+            exit 1
+            ;;
+        *)
+            if [ -z "${KEY_PATH}" ]; then
+                KEY_PATH="$1"
+            else
+                echo "Too many arguments"
+                usage
+                exit 1
+            fi
+            shift
+            ;;
+    esac
+done
+
+if [ -z "${KEY_PATH}" ]; then
+    echo "Error: YAML key path is required"
+    usage
+    exit 1
+fi
+
+# Check if WC_HOME is set
+if [ -z "${WC_HOME:-}" ]; then
+    echo "Error: WC_HOME environment variable not set" >&2
+    exit 1
+fi
+
+SECRETS_FILE="${WC_HOME}/secrets.yaml"
+
+if [ ! -f "${SECRETS_FILE}" ]; then
+    echo "Error: secrets file not found at ${SECRETS_FILE}" >&2
+    exit 1
+fi
+
+# Use yq to extract the value from the YAML file
+result=$(yq eval ".${KEY_PATH}" "${SECRETS_FILE}" 2>/dev/null)
+
+# Check if result is null (key not found)
+if [ "${result}" = "null" ]; then
+    echo "Error: Key path '${KEY_PATH}' not found in ${SECRETS_FILE}" >&2
+    exit 1
+fi
+
+echo "${result}"