chore: add BMAD framework modules, folder features, and tooling configs

Includes BMAD bmb/bmm/cis/tea workflow modules, folder (declaration)
feature implementation (controllers, models, enums, views, tests),
claude/cursor command configs, and email templates.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

.claude/commands/bmad-shard-doc.md

@@ -0,0 +1,10 @@
+---
+name: 'shard-doc'
+description: 'Splits large markdown documents into smaller, organized files based on level 2 (default) sections. Use if the user says perform shard document'
+---
+
+# shard-doc
+
+Read the entire task file at: {project-root}/_bmad/core/tasks/shard-doc.xml
+
+Follow all instructions in the task file exactly as written.