infra(04-00): route /c/ → /client/, Dockerfile, Gitea deploy

- Rename src/app/c/[token] → src/app/client/[token]
- Update proxy.ts, ClientRow, admin client detail with /client/ path
- Add output: "standalone" to next.config.ts for Docker build
- Add Dockerfile (multi-stage, node:20-alpine) and .dockerignore
- Push schema to Coolify Postgres via SSH tunnel (drizzle-kit push ✓)
- Update CLAUDE.md constraint 4 to reflect /client/ route
- Add Phase 4 planning artifacts (04-00, 04-RESEARCH, 04-PATTERNS)

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

src/app/client/[token]/page.tsx

@@ -0,0 +1,61 @@
+import { cache } from 'react';
+import { getClientView } from '@/lib/client-view';
+import { ClientDashboard } from '@/components/client-dashboard';
+import { notFound } from 'next/navigation';
+import { db } from '@/db';
+import { comments } from '@/db/schema';
+import { inArray } from 'drizzle-orm';
+import type { Comment } from '@/db/schema';
+
+export const revalidate = 0; // Always revalidate — comments and approvals must be fresh
+
+// React cache deduplicates DB calls within the same render
+const getCachedClientView = cache(getClientView);
+
+export async function generateMetadata({
+  params,
+}: {
+  params: Promise<{ token: string }>;
+}) {
+  const { token } = await params;
+  const view = await getCachedClientView(token);
+
+  if (!view) {
+    return { title: 'Not Found' };
+  }
+
+  return {
+    title: `${view.client.brand_name} — Stato Progetto | iamcavalli`,
+    description: view.client.brief || 'Dashboard stato progetto',
+  };
+}
+
+export default async function ClientPage({
+  params,
+}: {
+  params: Promise<{ token: string }>;
+}) {
+  const { token } = await params;
+  const view = await getCachedClientView(token);
+
+  if (!view) {
+    notFound();
+  }
+
+  // Fetch comments: tasks, deliverables, and general (entity_id = clientId)
+  const allTaskIds = view.phases.flatMap((p) => p.tasks.map((t) => t.id));
+  const allDeliverableIds = view.phases.flatMap((p) =>
+    p.tasks.flatMap((t) => t.deliverables.map((d) => d.id))
+  );
+  const allEntityIds = [view.client.id, ...allTaskIds, ...allDeliverableIds];
+
+  const allComments: Comment[] =
+    allEntityIds.length > 0
+      ? await db
+          .select()
+          .from(comments)
+          .where(inArray(comments.entity_id, allEntityIds))
+      : [];
+
+  return <ClientDashboard view={view} token={token} comments={allComments} />;
+}