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>

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

@@ -18,7 +18,7 @@ export function generateSvelteAdapter(schema) {
         '// AUTO-GENERATED by mizan — do not edit',
         '',
         "import { readable, type Readable } from 'svelte/store'",
-        "import { registerContext, type ContextState } from '@mizan/runtime'",
+        "import { registerContext, type ContextState } from '@mizan/base'",
         '',
     ]
 
@@ -70,8 +70,8 @@ export function generateSvelteAdapter(schema) {
     }
     lines.push('')
 
-    lines.push("export type { ContextState } from '@mizan/runtime'")
-    lines.push("export { configure, initSession, MizanError } from '@mizan/runtime'")
+    lines.push("export type { ContextState } from '@mizan/base'")
+    lines.push("export { configure, initSession, MizanError } from '@mizan/base'")
     lines.push('')
 
     return lines.join('\n')