feat(arcrun): mira wiki page with tag filter + accumulated WIP

- landing/app/mira/wiki: tag=mira-wiki list now shows all wiki paragraphs
  (depends on KBDB tag filter exposed in matrix/kbdb commit, separate repo)
- landing: app/mira hub + feed split + various WIP from prior sessions
- registry/components: claude_api / kbdb_create_block / kbdb_get / km_writer /
  platform_crypto / auth_oauth2 contracts + main.go (accumulated)
- .component-builds: pkg-lock updates + index.ts adjustments (WIP)
- .agents/specs/arcrun/frontend-redesign: design notes
- docs/test_credentials, docs/user_requirements/arcrun-landing-page: WIP docs
- cypher-executor: auth-dispatcher / wasi-shim adjustments (WIP)

Includes accumulated work from prior sessions plus the wiki UI tag-filter
update that surfaces the AI-generated wiki paragraphs at /mira/wiki.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

landing/middleware.ts

@@ -4,8 +4,8 @@ import type { NextRequest } from 'next/server';
 export function middleware(request: NextRequest) {
   const { pathname } = request.nextUrl;
 
-  // Only protect /dashboard
-  if (pathname.startsWith('/dashboard')) {
+  // Protect /dashboard and /mira (login required; mira 額外白名單檢查在 layout)
+  if (pathname.startsWith('/dashboard') || pathname.startsWith('/mira')) {
     const session = request.cookies.get('arcrun_session');
     if (!session?.value) {
       const loginUrl = new URL('/login', request.url);
@@ -18,5 +18,5 @@ export function middleware(request: NextRequest) {
 }
 
 export const config = {
-  matcher: ['/dashboard/:path*'],
+  matcher: ['/dashboard', '/dashboard/:path*', '/mira', '/mira/:path*'],
 };