Hub stage 2: read-only Technitium-compatible server over several servers

node:http server that serves the console build and a /api/* the console accepts:
its own login and session (clusterInitialized, the servers as nodes, hub flag,
Dashboard and Logs only), node=<id> forwarded with that server's token, no node or
cluster merged (stats, top lists, query logs, apps), every write refused with 403,
a short response cache, and an unreachable server reported as hubWarnings. The dev
mock takes --port and --scale so two of them differ. Vitest skips .claude/ worktrees.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

package.json

@@ -9,6 +9,7 @@
   "scripts": {
     "dev": "vite",
     "mock": "node dev/mock-api.mjs",
+    "hub": "node --experimental-strip-types hub/server.ts",
     "build": "tsc -b && vite build",
     "lint": "oxlint",
     "lint:language": "node dev/check-language.mjs",