Rename djarea to mizan and fix React casing conventions

Rename the package from djarea to mizan across the entire codebase —
Python package, React library, generators, tests, and examples. Fix
JSX/hook casing (MizanProvider, useMizan, etc.) that broke when the
original PascalCase names were lowercased during the rename.

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

django/pyproject.toml

@@ -1,5 +1,5 @@
 [project]
-name = "djarea"
+name = "mizan"
 version = "1.0.1"
 description = "Django + React server functions framework"
 readme = "README.md"
@@ -36,11 +36,11 @@ requires = ["hatchling"]
 build-backend = "hatchling.build"
 
 [tool.hatch.build.targets.wheel]
-packages = ["src/djarea"]
+packages = ["src/mizan"]
 
 [tool.pytest.ini_options]
 DJANGO_SETTINGS_MODULE = "tests.settings"
 pythonpath = ["src", "."]
-testpaths = ["src/djarea/tests"]
+testpaths = ["src/mizan/tests"]
 python_classes = ["*Tests", "*Test", "Test*"]
 python_functions = ["test_*"]