refactor!: major directory restructuring and npx support

- Create agents/ directory, move bmad, requirements, development-essentials
- Remove docs/, hooks/, dev-workflow/ directories
- Add npx support via github:cexll/myclaude
- Add bin/cli.js with --update command for installed modules
- Add package.json, skills/README.md, PLUGIN_README.md
- Update all references across config.json, README, marketplace.json
- Change default module from dev to do
- Update CHANGELOG with all 59 tags

BREAKING CHANGE: Directory structure changed, docs/hooks removed

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Co-Authored-By: SWE-Agent.ai <noreply@swe-agent.ai>

package.json

@@ -0,0 +1,26 @@
+{
+  "name": "myclaude",
+  "version": "0.0.0",
+  "private": true,
+  "description": "Claude Code multi-agent workflows (npx installer)",
+  "license": "AGPL-3.0",
+  "bin": {
+    "myclaude": "bin/cli.js"
+  },
+  "files": [
+    "bin/",
+    ".claude-plugin/",
+    "agents/",
+    "skills/",
+    "memorys/",
+    "codeagent-wrapper/",
+    "config.json",
+    "install.py",
+    "install.sh",
+    "install.bat",
+    "PLUGIN_README.md",
+    "README.md",
+    "README_CN.md",
+    "LICENSE"
+  ]
+}