Rip out Theia, ship P5.1 attach E2E + Justine UI work-in-progress

Theia rip-out:
- Delete app/api/theia-auth/route.ts (Traefik ForwardAuth shim)
- Delete app/api/projects/[projectId]/workspace/route.ts and
  app/api/projects/prewarm/route.ts (Cloud Run Theia provisioning)
- Delete lib/cloud-run-workspace.ts and lib/coolify-workspace.ts
- Strip provisionTheiaWorkspace + theiaWorkspaceUrl/theiaAppUuid/
  theiaError from app/api/projects/create/route.ts response
- Remove Theia callbackUrl branch in app/auth/page.tsx
- Drop "Open in Theia" button + xterm/Theia PTY copy in build/page.tsx
- Drop theiaWorkspaceUrl from deployment/page.tsx Project type
- Strip Theia IDE line + theia-code-os from advisor + agent-chat
  context strings
- Scrub Theia mention from lib/auth/workspace-auth.ts comment

P5.1 (custom apex domains + DNS):
- lib/coolify.ts + lib/opensrs.ts: nameserver normalization, OpenSRS
  XML auth, Cloud DNS plumbing
- scripts/smoke-attach-e2e.ts: full prod GCP + sandbox OpenSRS +
  prod Coolify smoke covering register/zone/A/NS/PATCH/cleanup

In-progress (Justine onboarding/build, MVP setup, agent telemetry):
- New (justine)/stories, project (home) layouts, mvp-setup, run, tasks
  routes + supporting components
- Project shell + sidebar + nav refactor for the Stackless palette
- Agent session API hardening (sessions, events, stream, approve,
  retry, stop) + atlas-chat, advisor, design-surfaces refresh
- New scripts/sync-db-url-from-coolify.mjs +
  scripts/prisma-db-push.mjs + docker-compose.local-db.yml for
  local Prisma workflows
- lib/dev-bypass.ts, lib/chat-context-refs.ts, lib/prd-sections.ts
- Misc: stories CSS, debug/prisma route, modal-theme, BuildLivePlanPanel

Made-with: Cursor

app/[workspace]/project/[projectId]/(workspace)/mvp-setup/launch/page.tsx

@@ -0,0 +1,60 @@
+"use client";
+
+import { useEffect, useState } from "react";
+import { useParams, useRouter } from "next/navigation";
+import { BuildMvpJustineV2 } from "@/components/project-main/BuildMvpJustineV2";
+import { JM } from "@/components/project-creation/modal-theme";
+
+interface SurfaceEntry {
+  id: string;
+  lockedTheme?: string;
+}
+
+export default function MvpSetupLaunchPage() {
+  const { workspace, projectId } = useParams() as { workspace: string; projectId: string };
+  const router = useRouter();
+  const [productName, setProductName] = useState("Your product");
+  const [giteaRepo, setGiteaRepo] = useState<string | undefined>();
+  const [surfaces, setSurfaces] = useState<SurfaceEntry[]>([]);
+
+  useEffect(() => {
+    fetch(`/api/projects/${projectId}`)
+      .then(r => r.json())
+      .then(d => {
+        const p = d.project;
+        if (p) {
+          setProductName(p.productName || p.name || "Your product");
+          setGiteaRepo(p.giteaRepo);
+        }
+      })
+      .catch(() => {});
+
+    fetch(`/api/projects/${projectId}/design-surfaces`)
+      .then(r => r.json())
+      .then(d => {
+        const ids: string[] = d.surfaces ?? [];
+        const themes: Record<string, string> = d.surfaceThemes ?? {};
+        setSurfaces(ids.map(id => ({ id, lockedTheme: themes[id] })));
+      })
+      .catch(() => {});
+  }, [projectId]);
+
+  const webappSurface = surfaces.find(s => s.id === "webapp");
+  const marketingSurface = surfaces.find(s => s.id === "marketing");
+
+  return (
+    <div style={{ height: "100%", overflow: "hidden", background: JM.inputBg }}>
+      <BuildMvpJustineV2
+        workspace={workspace}
+        projectId={projectId}
+        projectName={productName}
+        giteaRepo={giteaRepo}
+        accentLabel={webappSurface?.lockedTheme}
+        websiteStyle={marketingSurface?.lockedTheme}
+        onSwitchToPreview={() => {
+          router.push(`/${workspace}/project/${projectId}/build?section=preview`, { scroll: false });
+        }}
+      />
+    </div>
+  );
+}