Restructure tree by role; rename mizan-runtime → mizan-base

packages/ flattens into:
  backends/   server protocol adapters (mizan-django, mizan-ts)
  frontends/  client kernel + framework adapters (mizan-base, mizan-react, mizan-vue, mizan-svelte)
  workers/    runtime workers (mizan-ssr)
  cores/      shared language-level primitives (empty for now; mizan-python forthcoming)

The frontend kernel (was packages/mizan-runtime, now frontends/mizan-base) is
renamed to reflect its role — it's the shared base that frontend adapters
depend on directly. Reflects the substrate position that per-framework adapters
wrap a single shared kernel; codegen targets the adapter, not the raw kernel.

Path updates landed in: Makefile, two Gitea workflows, Dockerfile.test, four
example/harness config files, .claude/settings.local.json, four docs
(CLAUDE/ISSUES/ROADMAP/AFI_ARCHITECTURE), four codegen templates (stage1 +
react/vue/svelte adapters), and three package.jsons (the mizan-base rename
plus mizan-vue/svelte peerDeps).

Generated files under examples/django-react-site/harness/src/api/ still
reference @mizan/runtime — left as-is; they're regenerated artifacts and
the harness is non-functional pending the React wrapper-layer codegen.

Also folded in a pre-existing fix: the Gitea workflows had
working-directory: react / django pointing at a layout that predates
packages/, never updated.

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

backends/mizan-django/generate/generator/lib/adapters/svelte.mjs

@@ -0,0 +1,78 @@
+/**
+ * Svelte Stage 2 — Generates stores from Stage 1 output.
+ *
+ * Subscribes to the kernel for state. Returns readable stores.
+ */
+
+function pascalCase(str) {
+    return str.split(/[.\-_]/).map(p => p.charAt(0).toUpperCase() + p.slice(1)).join('')
+}
+
+export function generateSvelteAdapter(schema) {
+    const functions = schema['x-mizan-functions'] || []
+    const contextGroups = schema['x-mizan-contexts'] || {}
+    const mutations = functions.filter(fn => !fn.isContext && !fn.isForm && fn.affects)
+    const plainFns = functions.filter(fn => !fn.isContext && !fn.isForm && !fn.affects)
+
+    const lines = [
+        '// AUTO-GENERATED by mizan — do not edit',
+        '',
+        "import { readable, type Readable } from 'svelte/store'",
+        "import { registerContext, type ContextState } from '@mizan/runtime'",
+        '',
+    ]
+
+    const stage1Imports = []
+    for (const [ctxName] of Object.entries(contextGroups)) {
+        const p = pascalCase(ctxName)
+        stage1Imports.push(`fetch${p}Context`, `type ${p}ContextData`, `type ${p}ContextParams`)
+    }
+    for (const fn of [...mutations, ...plainFns]) {
+        stage1Imports.push(`call${pascalCase(fn.camelName)}`)
+    }
+    if (stage1Imports.length > 0) {
+        lines.push(`import { ${stage1Imports.join(', ')} } from '../index'`)
+        lines.push('')
+    }
+
+    for (const [ctxName, ctxMeta] of Object.entries(contextGroups)) {
+        const p = pascalCase(ctxName)
+        const ctxFunctions = functions.filter(fn => fn.isContext === ctxName)
+        const paramEntries = Object.entries(ctxMeta.params || {})
+        const paramsArg = paramEntries.length > 0 ? 'params' : '{} as any'
+
+        if (paramEntries.length > 0) {
+            lines.push(`export function create${p}Context(params: ${p}ContextParams) {`)
+        } else {
+            lines.push(`export function create${p}Context() {`)
+        }
+
+        // Use readable store backed by kernel subscription
+        lines.push(`    const store = readable<ContextState<${p}ContextData>>(`)
+        lines.push(`        { data: null, status: 'idle', error: null },`)
+        lines.push(`        (set) => {`)
+        lines.push(`            const handle = registerContext('${ctxName}', ${paramsArg}, () => fetch${p}Context(${paramsArg}))`)
+        lines.push(`            const unsub = handle.subscribe(() => set(handle.getState()))`)
+        lines.push(`            handle.refetch()`)
+        lines.push(`            return () => { unsub(); handle.unregister() }`)
+        lines.push(`        },`)
+        lines.push(`    )`)
+        lines.push('')
+        lines.push(`    return store`)
+        lines.push('}')
+        lines.push('')
+    }
+
+    // Re-export mutations as-is from Stage 1
+    for (const fn of [...mutations, ...plainFns]) {
+        const p = pascalCase(fn.camelName)
+        lines.push(`export { call${p} } from '../index'`)
+    }
+    lines.push('')
+
+    lines.push("export type { ContextState } from '@mizan/runtime'")
+    lines.push("export { configure, initSession, MizanError } from '@mizan/runtime'")
+    lines.push('')
+
+    return lines.join('\n')
+}