Add development-scripts agent skill

Ports generic-scripts-module-v1 into a routed skill: module anatomy, shared
loggers/base modules, Taskfile integration, workflows, and pattern decisions.

Fixes a latent defect in the loggers example that silenced all logging in the
module scaffold: loggers/lib/--index-api.sh now sources --env-vars-reader.sh,
and the reader preserves already-exported values so caller overrides still win.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

assets/module-example-v1/lib/-initialize-one.sh

@@ -0,0 +1,19 @@
+#!/bin/bash
+
+. ./.scripts/loggers/lib/--index-api.sh
+
+_moduleExampleV1_initializeOne() {
+  local FUNCTION_NAME="_moduleExampleV1_initializeOne"
+
+  _loggers_info "${FUNCTION_NAME}" "Initializing module-example-v1"
+  _loggers_debug "${FUNCTION_NAME}" "Name: ${MODULE_EXAMPLE_V1_NAME}"
+  _loggers_debug "${FUNCTION_NAME}" "Output directory: ${MODULE_EXAMPLE_V1_OUTPUT_DIR}"
+
+  if [ "${MODULE_EXAMPLE_V1_DRY_RUN}" = "true" ]; then
+    _loggers_info "${FUNCTION_NAME}" "Dry run enabled; no files will be changed."
+    return 0
+  fi
+
+  mkdir -p "${MODULE_EXAMPLE_V1_OUTPUT_DIR}"
+  _loggers_info "${FUNCTION_NAME}" "Initialization complete."
+}