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/README.md

@@ -0,0 +1,13 @@
+# `module-example-v1` Generic Scaffold
+
+This is a generic reference scaffold for a new Cognitive Architect script module.
+
+To adapt it:
+
+1. Copy `module-example-v1/` into `.scripts/<new-module>/`.
+2. Replace paths containing `module-example-v1`.
+3. Replace environment prefix `MODULE_EXAMPLE_V1_`.
+4. Replace function prefix `_moduleExampleV1_`.
+5. Add public API wrappers and implementation files as needed.
+6. Add a root `Taskfile.yml` include only if the module should be task-runner public.
+7. Run `bash -n` against all generated `.sh` files.