Catch missed content edits from tree restructure

The fe39fcb commit captured the file moves (git mv stages those automatically)
but didn't catch the content edits I made afterward — npm package rename
(@mizan/runtime → @mizan/base), path updates in Makefile/Dockerfile/examples,
and doc updates were all left unstaged at commit time.

This commit lands those:
- npm rename: 3 frontend package.jsons (base/vue/svelte) + mizan-base/src/index.ts + 4 codegen templates
- path updates: Makefile, Dockerfile.test, two Gitea workflows, four example/harness configs
- doc updates: CLAUDE.md, ROADMAP.md, ISSUES.md, docs/AFI_ARCHITECTURE.md

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

CLAUDE.md

@@ -10,23 +10,21 @@ Django + React ships first. The protocol is language-agnostic (proven by mizan-t
 
 ## Package Layout
 
-Two layers per side. Per-framework adapters wrap a single shared kernel; codegen targets the adapter.
+Tree organized by role. Per-framework adapters wrap a single shared kernel; codegen targets the adapter.
 
-**Backend protocol adapters** — implement the wire protocol on a server stack:
-
-- `mizan-django/` — Django adapter
-- `mizan-ts/` — TypeScript adapter (proves the protocol is language-agnostic)
-
-**Frontend kernel + framework adapters** — kernel is the imperative client primitive set; each framework adapter wraps the kernel in its own idiomatic constructs:
-
-- `mizan-runtime/` — framework-agnostic kernel; owns data, status, error; adapters subscribe
-- `mizan-react/` — React contexts + hooks over the kernel
-- `mizan-vue/` — Vue composables over the kernel
-- `mizan-svelte/` — Svelte stores/runes over the kernel
-
-**SSR worker:**
-
-- `mizan-ssr/` — Bun subprocess used by the Django template backend
+```
+backends/         server protocol adapters
+    mizan-django/    Django adapter
+    mizan-ts/        TypeScript adapter (proves the protocol is language-agnostic)
+frontends/        client kernel + per-framework adapters
+    mizan-base/      framework-agnostic kernel; owns data, status, error; adapters subscribe
+    mizan-react/     React contexts + hooks over the kernel
+    mizan-vue/       Vue composables over the kernel
+    mizan-svelte/    Svelte stores/runes over the kernel
+cores/            shared language-level primitives (currently empty; mizan-python forthcoming)
+workers/          runtime workers / bridges
+    mizan-ssr/       Bun subprocess used by the Django template backend
+```
 
 ---
 
@@ -444,7 +442,7 @@ urlpatterns = [
 
 ## Codegen — Current State
 
-The codegen is two-stage and per-framework. Stage 1 (in `mizan-django/generate/`) emits the framework-agnostic protocol layer (`callXxx` for mutations, `fetchXxx` for context bundles, types). Stage 2 emits per-framework hooks/composables/stores that subscribe to the `mizan-runtime` kernel.
+The codegen is two-stage and per-framework. Stage 1 (in `mizan-django/generate/`) emits the framework-agnostic protocol layer (`callXxx` for mutations, `fetchXxx` for context bundles, types). Stage 2 emits per-framework hooks/composables/stores that subscribe to the `mizan-base` kernel.
 
 **What's in place:**