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/allauth/components/settings/PasskeysSection.tsx

@@ -0,0 +1,103 @@
+'use client'
+
+import { useState, useEffect } from 'react'
+import { useAllauthAPI } from '../../contexts/APIContext'
+import { useConfig } from '../../contexts/AuthContext'
+import { useStyles } from '../../contexts/StylesContext'
+import { SettingsSection, SettingsItem, SettingsList, Button } from './SettingsComponents'
+import type { Authenticator, WebAuthnAuthenticator } from '../../types'
+
+export function PasskeysSection() {
+    const api = useAllauthAPI()
+    const config = useConfig()
+    const styles = useStyles()
+    const [passkeys, setPasskeys] = useState<WebAuthnAuthenticator[]>([])
+    const [loading, setLoading] = useState(true)
+
+    // Check if passkey login is enabled
+    const passkeyLoginEnabled = config?.data?.mfa?.passkey_login_enabled
+
+    const fetchPasskeys = async () => {
+        try {
+            const res = await api.mfa.list()
+            if (res.status === 200 && res.data) {
+                const authenticators = res.data as Authenticator[]
+                setPasskeys(authenticators.filter((a): a is WebAuthnAuthenticator => a.type === 'webauthn'))
+            }
+        } catch {
+            // Silently fail - passkeys just won't show
+        }
+        setLoading(false)
+    }
+
+    useEffect(() => { fetchPasskeys() }, [])
+
+    // Don't render if passkey login isn't enabled
+    if (!passkeyLoginEnabled) return null
+    if (loading) return null
+
+    const handleAdd = async () => {
+        try {
+            const { startRegistration } = await import('@simplewebauthn/browser')
+
+            // Request creation options - use passwordless=true for login passkeys
+            const optionsRes = await api.webauthn.requestOptions.creation(true)
+
+            if (optionsRes.status !== 200) {
+                return
+            }
+
+            const publicKeyOptions = optionsRes.data?.creation_options?.publicKey
+            if (!publicKeyOptions) throw new Error('Invalid options response')
+
+            // @simplewebauthn/browser v13+ expects { optionsJSON: ... }
+            const credential = await startRegistration({ optionsJSON: publicKeyOptions as any })
+            const name = prompt('Name this passkey:') || 'Passkey'
+
+            const res = await api.webauthn.add(name, credential)
+            if (res.status === 200) {
+                fetchPasskeys()
+            }
+        } catch (e: any) {
+            if (e.name !== 'AbortError') {
+                alert(e.message || 'Failed to add passkey')
+            }
+        }
+    }
+
+    const handleRemove = async (id: number) => {
+        if (!confirm('Remove this passkey? You won\'t be able to use it to sign in anymore.')) return
+        await api.webauthn.delete([id])
+        fetchPasskeys()
+    }
+
+    return (
+        <SettingsSection title="Passkeys">
+            <p className={styles.settingsItemMeta} style={{ marginBottom: '1rem' }}>
+                Passkeys let you sign in quickly using your device's biometrics or security key.
+                No password needed.
+            </p>
+
+            {passkeys.length > 0 && (
+                <SettingsList>
+                    {passkeys.map(passkey => (
+                        <SettingsItem
+                            key={passkey.id}
+                            label={passkey.name}
+                            meta={`Added ${new Date(passkey.created_at * 1000).toLocaleDateString()}`}
+                            actions={
+                                <Button variant="danger" onClick={() => handleRemove(passkey.id)}>
+                                    Remove
+                                </Button>
+                            }
+                        />
+                    ))}
+                </SettingsList>
+            )}
+
+            <Button onClick={handleAdd}>
+                {passkeys.length > 0 ? 'Add Another Passkey' : 'Set Up Passkey'}
+            </Button>
+        </SettingsSection>
+    )
+}