Scaffold the Before-M1 repo skeleton

Stand up the modular-monolith skeleton per docs/V1_BUILD_PLAN.md: one .NET 10
solution with web + worker hosts sharing seven interface-bounded module projects,
PostgreSQL 17 + pgvector via EF Core 10, a React 19 + Vite SPA built into wwwroot,
and Docker Compose for one-command local dev. Skeleton only — no feature code.

Architecture
- One project per module (OrgBoard, Identity, Skills, Assembler, Governance,
  Memory, Integrations); each is its own assembly so non-public types (entities,
  DbContext) are invisible across modules at compile time.
- TeamUp.Bootstrap is the only library that references all modules; both hosts
  reference only Bootstrap. SharedKernel/Infrastructure never reference modules.
- IModule seam: Register(...) runs in both hosts; MapEndpoints(...) only in web.
- PlatformDbContext owns the pgvector extension + the seven module schemas
  (InitialPlatform migration); MigrationRunner applies it then any module context.
- One image, two roles selected by RUN_MODE at the Docker entrypoint.

Verified
- dotnet build green (nullable + warnings-as-errors).
- ArchitectureTests 8/8 — reflection-based boundary rules (no module -> module,
  -> Infrastructure, -> Bootstrap, or -> host references).
- IntegrationTests 10/10 — Testcontainers boots the host against real pgvector:
  migration applies, vector extension + 7 schemas exist, /health 200, every
  /api/<module>/ping 200, /openapi/v1.json served.
- client builds clean (Vite 6 — pinned for Node 22.3.0; Vite 8 needs Node >=22.12).

Packages and base images route through the Nexus mirror (mirror.soroushasadi.com),
reachable from Iran when nuget.org / Docker Hub / MCR are not. CI is intentionally
deferred to a later session.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

client/src/App.tsx

@@ -0,0 +1,83 @@
+import { useEffect, useState } from 'react'
+
+const MODULES = [
+  'identity',
+  'orgboard',
+  'skills',
+  'integrations',
+  'memory',
+  'assembler',
+  'governance',
+] as const
+
+type Status = boolean | null // null = checking
+
+function StatusDot({ ok }: { ok: Status }) {
+  const color = ok === null ? 'bg-amber-400' : ok ? 'bg-teal-400' : 'bg-rose-500'
+  return <span className={`inline-block h-2.5 w-2.5 rounded-full ${color}`} aria-hidden />
+}
+
+export default function App() {
+  const [health, setHealth] = useState<Status>(null)
+  const [modules, setModules] = useState<Record<string, Status>>(
+    Object.fromEntries(MODULES.map((m) => [m, null])),
+  )
+
+  useEffect(() => {
+    fetch('/health')
+      .then((r) => setHealth(r.ok))
+      .catch(() => setHealth(false))
+
+    MODULES.forEach((m) => {
+      fetch(`/api/${m}/ping`)
+        .then((r) => setModules((s) => ({ ...s, [m]: r.ok })))
+        .catch(() => setModules((s) => ({ ...s, [m]: false })))
+    })
+  }, [])
+
+  return (
+    <main className="min-h-screen bg-indigo-950 text-slate-100">
+      <div className="mx-auto flex min-h-screen max-w-3xl flex-col justify-center px-6 py-16">
+        <p className="text-sm font-medium uppercase tracking-widest text-indigo-300">
+          A product of AliaSaaS
+        </p>
+        <h1 className="mt-2 text-5xl font-bold tracking-tight">TeamUp.AI</h1>
+        <p className="mt-3 text-lg text-indigo-200">
+          Build human + AI teams. A live org chart that does work.
+        </p>
+
+        <div className="mt-10 rounded-xl border border-indigo-800/60 bg-indigo-900/40 p-5">
+          <div className="flex items-center justify-between">
+            <span className="font-medium">API health</span>
+            <span className="flex items-center gap-2 text-sm text-indigo-200">
+              <StatusDot ok={health} />
+              {health === null ? 'checking…' : health ? 'healthy' : 'unreachable'}
+            </span>
+          </div>
+        </div>
+
+        <h2 className="mt-10 text-sm font-semibold uppercase tracking-widest text-indigo-300">
+          Modules
+        </h2>
+        <ul className="mt-3 grid grid-cols-1 gap-2 sm:grid-cols-2">
+          {MODULES.map((m) => (
+            <li
+              key={m}
+              className="flex items-center justify-between rounded-lg border border-indigo-800/50 bg-indigo-900/30 px-4 py-2.5"
+            >
+              <span className="capitalize">{m}</span>
+              <span className="flex items-center gap-2 text-sm text-indigo-200">
+                <StatusDot ok={modules[m]} />
+                {modules[m] === null ? '…' : modules[m] ? 'ok' : 'down'}
+              </span>
+            </li>
+          ))}
+        </ul>
+
+        <p className="mt-12 text-xs text-indigo-400">
+          Pre-M1 skeleton · web + worker on one modular monolith · PostgreSQL 17 + pgvector
+        </p>
+      </div>
+    </main>
+  )
+}