feat(scaffold): Next 16 + Payload 3 scaffold with Kaniko CI and Swarm deploy

Initial app scaffold wired end-to-end: Payload 3.82 CMS integrated with Next
16.2 App Router (standalone output), PostgreSQL 17 adapter, Lexical rich text,
Tailwind 3 with Material 3 token palette ported from the stitch technical-
editorial design, self-hosted Space Grotesk + Inter via next/font, and
lucide-react icons. Admin lives at /admin, REST/GraphQL at /api/*, and
/api/health returns build SHA/REV for deploy verification.

Seven collections (Users, Media, Categories, Projects, Posts, Gear,
ContactSubmissions) and six globals (Home, About, Contact, Resume,
Navigation, SEO) model the content outlined in docs/PRD.md.

Multi-stage Dockerfile builds a non-root standalone runner; Woodpecker
pipeline lints, typechecks, builds, audits, builds with Kaniko to
git.mosaicstack.dev, scans with Trivy, and links the package. Swarm
compose mirrors the mosaic-stack-website Traefik entrypoints=web pattern
with www->apex redirect and immutable WEB_IMAGE_TAG.

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

src/globals/Home.ts

@@ -0,0 +1,35 @@
+import type { GlobalConfig } from "payload";
+
+export const Home: GlobalConfig = {
+  slug: "home",
+  access: { read: () => true },
+  fields: [
+    { name: "heroPrefix", type: "text", defaultValue: "01 // THE MANIFESTO" },
+    { name: "heroHeadline", type: "richText" },
+    { name: "heroSub", type: "textarea" },
+    {
+      name: "ctas",
+      type: "array",
+      fields: [
+        { name: "label", type: "text", required: true },
+        { name: "href", type: "text", required: true },
+        {
+          name: "style",
+          type: "select",
+          defaultValue: "primary",
+          options: [
+            { label: "Primary (neon)", value: "primary" },
+            { label: "Secondary", value: "secondary" },
+            { label: "Ghost", value: "ghost" },
+          ],
+        },
+      ],
+    },
+    {
+      name: "featuredProjects",
+      type: "relationship",
+      relationTo: "projects",
+      hasMany: true,
+    },
+  ],
+};