Migrate to hugo-templates build system

🚀 Updated module.json to use hugo-templates instead of hugo-base

Changes:
- deployment.build_system: hugo-base → hugo-templates
- Maintains existing hugo_config structure
- Part of Task 006 Stage 6 v2.0 full migration

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>

Author: Claude-InfoTech

module.json

@@ -9,7 +9,7 @@
   "deployment": {
     "subdomain": "linux-base",
     "repository": "mod_linux_base",
-    "build_system": "hugo-base"
+    "build_system": "hugo-templates"
   },
 
   "hugo_config": {