Restructure repo into five-package AFI architecture

Mizan is an Application Framework Interface (AFI) with five
independent packages:

  packages/
    mizan-ast/       Language layer (source → KDL schema)
    mizan-schema/    IR layer (KDL schema definition)
    mizan-rpc/       Protocol layer (client gen + server adapters)
      adapters/django/   ← was django/
      generator/         ← was react/src/generator/
    mizan-csr/       State layer (client state engine)
      adapters/react/    ← was react/
    mizan-ssr/       Rendering layer (server-side rendering)

Each package is independent. The adapter directories contain the
framework-specific implementations. Stub packages (ast, schema, ssr)
establish the structure for future work.

264 Django tests + 33 React tests pass from new locations.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

packages/mizan-rpc/adapters/django/pyproject.toml

@@ -0,0 +1,46 @@
+[project]
+name = "mizan"
+version = "1.0.1"
+description = "Django + React server functions framework"
+readme = "README.md"
+requires-python = ">=3.10"
+dependencies = [
+    "django>=5.0",
+    "django-ninja>=1.0",
+    "django-readers>=2.0",
+    "pydantic>=2.0",
+    "PyJWT>=2.0",
+]
+
+[project.optional-dependencies]
+channels = [
+    "channels>=4.0",
+    "channels-redis>=4.0",
+]
+allauth = [
+    "django-allauth>=65.0",
+]
+webauthn = [
+    "fido2>=2.0",
+]
+shapes = [
+    "django-readers>=2.0",
+]
+dev = [
+    "pytest>=8.0",
+    "pytest-django>=4.9",
+]
+
+[build-system]
+requires = ["hatchling"]
+build-backend = "hatchling.build"
+
+[tool.hatch.build.targets.wheel]
+packages = ["src/mizan"]
+
+[tool.pytest.ini_options]
+DJANGO_SETTINGS_MODULE = "tests.settings"
+pythonpath = ["src", "."]
+testpaths = ["src/mizan/tests"]
+python_classes = ["*Tests", "*Test", "Test*"]
+python_functions = ["test_*"]