feat: prepare package for npm distribution as @jschulte/bmad-method

- Renamed package to @jschulte/bmad-method (scoped package)
- Updated version to 6.0.0-alpha.22
- Updated repository URL to jschulte/BMAD-METHOD
- Added .npmignore to exclude dev files
- Enhanced description to mention story-pipeline

This allows users to install via:
  npx @jschulte/bmad-method install

.npmignore

@@ -0,0 +1,39 @@
+# Development files
+.git
+.github
+.husky
+.vscode
+.claude
+.agentvibes
+.DS_Store
+*.log
+npm-debug.log*
+.env*
+
+# Test files
+test/
+coverage/
+*.test.js
+*.spec.js
+
+# Documentation (keep README.md)
+docs/
+website/
+*.pdf
+
+# Build artifacts
+dist/
+build/
+*.tgz
+
+# IDE
+.idea/
+*.swp
+*.swo
+*~
+
+# Misc
+.editorconfig
+.prettierrc*
+.eslintrc*
+.markdownlint*

package.json

@@ -1,8 +1,8 @@
 {
   "$schema": "https://json.schemastore.org/package.json",
-  "name": "bmad-method",
-  "version": "6.0.0-alpha.21",
-  "description": "Breakthrough Method of Agile AI-driven Development",
+  "name": "@jschulte/bmad-method",
+  "version": "6.0.0-alpha.22",
+  "description": "Breakthrough Method of Agile AI-driven Development (Enhanced with story-pipeline)",
   "keywords": [
     "agile",
     "ai",
@@ -14,7 +14,7 @@
   ],
   "repository": {
     "type": "git",
-    "url": "git+https://github.com/bmad-code-org/BMAD-METHOD.git"
+    "url": "git+https://github.com/jschulte/BMAD-METHOD.git"
   },
   "license": "MIT",
   "author": "Brian (BMad) Madison",