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>

docs/AFI_ARCHITECTURE.md

@@ -5,32 +5,21 @@ server-client unification layer.
 
 ## Package layout
 
-Two layers per side. Independent packages, single shared protocol.
+Tree organized by role.
 
-**Backend protocol adapters** — implement the wire protocol on a
-server stack:
-
-| Package | Role |
-|---|---|
-| `mizan-django` | Django adapter |
-| `mizan-ts` | TypeScript adapter (proves the protocol is language-agnostic) |
-
-**Frontend kernel + framework adapters** — the kernel is the
-imperative client primitive set; each framework adapter wraps the
-kernel in its own idiomatic constructs:
-
-| Package | Role |
-|---|---|
-| `mizan-runtime` | Framework-agnostic client 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:**
-
-| Package | Role |
-|---|---|
-| `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 (mizan-python forthcoming)
+workers/          runtime workers / bridges
+    mizan-ssr/       Bun subprocess used by the Django template backend
+```
 
 ## Two orthogonal products
 
@@ -42,7 +31,7 @@ compose.
 
 ## Kernel model
 
-The client kernel (`mizan-runtime`) is the one hard thing. Per-
+The client kernel (`mizan-base`) is the one hard thing. Per-
 framework adapters are thin idiomatic wrappers around it. Codegen
 emits typed bindings against the framework adapter's surface, not
 against the raw kernel — so a React developer gets `useEcho()` and