Full test infrastructure, code audit fixes, and real E2E integration tests

Test infrastructure:
- Django standalone test runner (pytest-django, test settings, EmailUser model)
- React unit tests via Vitest with jsdom, jest compat layer, path aliases
- Playwright E2E tests using generated hooks in a real Chromium browser
- Docker Compose test backend (Django + Redis) for integration testing
- Desktop integration test app (PyWebView + Django + uvicorn)
- Makefile with test/test-django/test-react/test-integration targets

Library bugs found and fixed:
- hasJWT truthiness: undefined !== null was true, skipping session init
- process.env crash: CSR client referenced process.env in non-Node browsers
- baseUrl not forwarded: DjareaProvider didn't pass baseUrl to CSR client
- Relative URL handling: new URL() failed with relative base paths
- call() race condition: HTTP requests fired before CSRF cookie was set
- Session init await: added sessionRef promise so call() waits for session
- path_prefix on schema export: both export commands failed with URL reverse
- NullBooleanField removed: referenced field doesn't exist in Django 5.0+
- lru_cache on JWT settings: get_settings() now cached as intended
- Channel message routing: broadcasts now include channel name and params
- httpFunctionCall: fixed URL and request body format

Generator fixes:
- Removed 1,100 lines of REST/OpenAPI client generation (not part of Djarea)
- Generator now works for djarea-only projects without django-ninja REST APIs
- Generated DjangoContext now includes ChannelProvider when channels exist
- Fixed env var passthrough for schema export commands
- Deduplicated fetch logic into single runDjangoCommand helper

Test quality:
- Fixed 33 tautological Django tests with real assertions
- Found hidden bug: benchmark functions were never registered
- Found hidden bug: unicode lookalike test used plain ASCII
- Deleted worthless React unit tests (duplicates, shape checks, Zod-tests-Zod)
- Replaced jsdom integration tests with Playwright browser tests

Example apps:
- example/: Integration test backend with 33 server functions, 5 forms,
  4 channels covering auth variations, contexts, class-based ServerFunction,
  error codes, DjareaFormMixin, formsets, and JWT
- desktop/: PyWebView desktop app with file system access, SQLite CRUD,
  system introspection, and 39 real HTTP integration tests

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

react/src/index.ts

@@ -0,0 +1,115 @@
+/**
+ * Djarea - Django Server Functions Client
+ *
+ * Frontend client for Django server functions.
+ * Server functions are the core primitive - accessed via React hooks.
+ *
+ * Two-layer architecture:
+ *
+ * 1. Library layer (this package) - Generic name-based API
+ *    Used by libraries like Allauth that need to call functions by name.
+ *
+ *    import { useDjarea, useDjareaContext, useDjareaCall } from 'djarea'
+ *    const user = useDjareaContext('current_user')
+ *    const call = useDjareaCall('update_profile')
+ *
+ * 2. Generated layer (@/api) - Typed project-specific API
+ *    Used by product code for type-safe hooks.
+ *
+ *    import { useCurrentUser, useUpdateProfile } from '@/api'
+ *    const user = useCurrentUser()
+ *    const updateProfile = useUpdateProfile()
+ *
+ * The generated code wraps DjareaProvider and adds type-safe hooks.
+ */
+
+// ============================================================================
+// React Context & Hooks (primary API)
+// ============================================================================
+
+export {
+    // Provider
+    DjareaProvider,
+    type DjareaProviderProps,
+    type DjareaHydration,
+
+    // Hooks (generic name-based API for libraries)
+    useDjarea,
+    useDjareaContext,
+    useDjareaCall,
+    useDjareaStatus,
+    usePush,
+
+    // Types
+    type DjareaContextValue,
+    type ConnectionStatus,
+    type PushMessage,
+    type PushListener,
+    type ContextStore,
+    type Transport,
+
+    // Legacy aliases (deprecated, for migration)
+    DjangoContext,
+    useDjango,
+    useDjangoStatus,
+    useServerFunction,
+    type DjangoContextValue,
+    type DjangoContextProps,
+} from './context'
+
+// ============================================================================
+// HTTP Client (for SSR or non-React usage)
+// ============================================================================
+
+export {
+    httpFunctionCall,
+    createDjangoCSRClient,
+    createDjangoSSRClient,
+    ensureDjangoSession,
+    Auth,
+    type DjangoHTTPClient,
+    type CSRClientConfig,
+    type JWTClientConfig,
+    type SSRClientConfig,
+} from './client/'
+
+// ============================================================================
+// Errors
+// ============================================================================
+
+export {
+    DjangoError,
+    type FunctionErrorResponse,
+    type ErrorCode,
+} from './errors'
+
+// ============================================================================
+// Forms (typed form hooks core)
+// ============================================================================
+
+export {
+    // Single form
+    useDjareaFormCore,
+    // Legacy alias
+    useDjareaFormCore as useDjangoFormCore,
+    type DjangoFormState,
+    type FormSchema,
+    type FormErrors,
+    type FormOptions,
+    type FormSubmitResult,
+    type FormCoreConfig,
+    // Formset
+    useDjareaFormsetCore,
+    // Legacy alias
+    useDjareaFormsetCore as useDjangoFormsetCore,
+    type DjangoFormsetState,
+    type FormsetSchema,
+    type FormsetErrors,
+    type FormsetCoreConfig,
+    type FormsetSubmitResult,
+    // Shared types
+    type FieldSchema,
+    type FieldChoice,
+    type FieldError,
+    type FormMeta,
+} from './forms'