feat(docker-watcher): phase 9 - SvelteKit dashboard & project views

SvelteKit project with Svelte 5, TypeScript, Tailwind CSS v4.
Dashboard with project cards, project detail with stage/instance
management, deploy history, instance controls. Shared API client
and reusable components (StatusBadge, InstanceCard, ProjectCard,
ConfirmDialog). Add Phase 14 (Volumes & Environment) to plan.

web/src/routes/+layout.ts

@@ -0,0 +1,3 @@
+// Disable SSR for static adapter — all rendering happens client-side.
+export const ssr = false;
+export const prerender = true;