Flatten to three packages + extract mizan-runtime

packages/
  mizan-runtime/   Framework-agnostic state engine (~150 lines)
                   Context registry, batched invalidation, fetch primitives
  mizan-django/    Django server adapter (was packages/mizan-rpc/adapters/django/)
                   Codegen moved to mizan-django/generate/
  mizan-react/     React adapter (was packages/mizan-csr/adapters/react/)

Removed premature abstractions: mizan-ast, mizan-schema, mizan-rpc,
mizan-csr, mizan-ssr stub packages. The actual architecture is three
concrete packages, not five abstract layers.

mizan-runtime implements the v1 spec: registerContext with params,
scoped invalidation via microtask batching, server-driven invalidation
from mutation responses, mizanFetch for context bundles, mizanCall for
mutations.

264 Django + 33 React tests pass.

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

Makefile

@@ -1,7 +1,7 @@
 .PHONY: install test test-django test-react test-integration docker-up docker-down clean
 
-DJANGO = packages/mizan-rpc/adapters/django
+DJANGO = packages/mizan-django
-REACT = packages/mizan-csr/adapters/react
+REACT = packages/mizan-react
 
 # ─── Setup ───────────────────────────────────────────────────────────────────
 

README.md

@@ -269,10 +269,10 @@ chat.send({ text: 'hello' })
 
 ```bash
 # Django unit tests
-cd packages/mizan-rpc/adapters/django && uv sync --extra dev --extra channels && uv run pytest
+cd packages/mizan-django && uv sync --extra dev --extra channels && uv run pytest
 
 # React unit tests
-cd packages/mizan-csr/adapters/react && npm test
+cd packages/mizan-react && npm test
 
 # E2E integration tests (real browser, real backend)
 docker compose -f examples/django-react-site/docker-compose.test.yml up -d
@@ -288,14 +288,9 @@ make test-all
 ```
 mizan/
   packages/
-    mizan-ast/       Language layer (source → KDL schema)
+    mizan-runtime/     Client state engine (~150 lines, framework-agnostic)
-    mizan-schema/    IR layer (KDL schema definition)
+    mizan-django/      Django server adapter (decorators, dispatch, contexts, SSR)
-    mizan-rpc/       Protocol layer (client generation + server adapters)
+    mizan-react/       React adapter (thin wrapper around runtime)
-      adapters/django/   Django server adapter
-      generator/         Codegen CLI
-    mizan-csr/       State layer (client state engine + frontend adapters)
-      adapters/react/    React adapter
-    mizan-ssr/       Rendering layer (server-side rendering)
   examples/
     django-react-site/         E2E tests + Django backend
     django-react-desktop-app/  PyWebView desktop app

examples/django-react-site/Dockerfile.test

@@ -8,7 +8,7 @@ RUN apt-get update && apt-get install -y --no-install-recommends \
     && rm -rf /var/lib/apt/lists/*
 
 # Install mizan from local source with channels support
-COPY packages/mizan-rpc/adapters/django/ /app/django/
+COPY packages/mizan-django/ /app/django/
 RUN pip install --no-cache-dir /app/django[channels] daphne
 
 # Copy example app

examples/django-react-site/harness/django.config.mjs

@@ -10,9 +10,9 @@ export default {
     source: {
         django: {
             managePath: path.join(root, 'examples/django-react-site/backend/manage.py'),
-            command: [path.join(root, 'packages/mizan-rpc/adapters/django/.venv/bin/python')],
+            command: [path.join(root, 'packages/mizan-django/.venv/bin/python')],
             env: {
-                PYTHONPATH: `${path.join(root, 'packages/mizan-rpc/adapters/django/src')}:${path.join(root, 'examples/django-react-site/backend')}`,
+                PYTHONPATH: `${path.join(root, 'packages/mizan-django/src')}:${path.join(root, 'examples/django-react-site/backend')}`,
                 DJANGO_SETTINGS_MODULE: 'testapp.settings',
             },
         },