Fase 0: scaffold monorepo, SvelteKit skeleton, and dev infrastructure

- Turborepo + pnpm workspaces with apps/web and packages/types
- SvelteKit app: Tailwind, Paraglide i18n (en/es), keycloak-js, Supabase client,
  auth/collective stores, PWA service worker skeleton, all route placeholders
- packages/types: domain types (User, Collective, ShoppingList, etc.) and
  database.ts placeholder for generated types
- Justfile with dev, db-*, kc-*, build, backup, restore, deploy recipes
- infra/docker-compose.dev.yml: Postgres 15, GoTrue, PostgREST, Realtime v2.83,
  Storage, Kong (port 8001), Studio, Keycloak 24
- infra/docker-compose.prod.yml, kong.yml, db-init scripts, backup/deploy scripts
- keycloak/realm-export.json with colectivo realm and 5 dev test users
- supabase/config.toml and seed.sql with sample collective and items
- GitHub Actions: ci.yml (lint+typecheck+build) and deploy.yml (GHCR + SSH)
- .env.example documenting all required variables
- Fixed docker-compose issues: Studio image tag, Kong port conflict (8001),
  internal role passwords init script, Realtime METRICS_JWT_SECRET/APP_NAME

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

apps/web/tailwind.config.ts

@@ -0,0 +1,20 @@
+import type { Config } from 'tailwindcss';
+
+export default {
+	content: ['./src/**/*.{html,js,svelte,ts}'],
+	darkMode: 'class',
+	theme: {
+		extend: {
+			fontFamily: {
+				sans: ['Inter', 'system-ui', 'sans-serif']
+			},
+			colors: {
+				// Semantic aliases over Tailwind slate
+				background: 'hsl(var(--background) / <alpha-value>)',
+				surface: 'hsl(var(--surface) / <alpha-value>)',
+				'surface-raised': 'hsl(var(--surface-raised) / <alpha-value>)'
+			}
+		}
+	},
+	plugins: []
+} satisfies Config;