Add Context Studio Wizard — project scaffolding CLI

- wizard.sh: interactive bash wizard that scaffolds new CS projects
- lib/: utils, core install, project structure, workflow generation
- templates/: Dockerfile, devcontainer.json, agent presets (minimal/standard), system.json, roles, hook rules
- README: setup, usage, mobility workflow

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

templates/hooks/rules/default.json

@@ -0,0 +1,4 @@
+{
+  "role": "default",
+  "rules": []
+}