feat(slides): add workshop slides for JSR-354 Money and Currency API

Introduce complete slide deck covering:
- problem statement and limitations of double, BigDecimal, and Currency
- fundamentals of MonetaryAmount, CurrencyUnit, and Money
- arithmetic operations, rounding, formatting, and parsing
- advanced concepts: currency conversion, MonetaryOperator, MonetaryQuery, MonetaryContext
- architecture and integration topics
- hands-on exercises for all sections

Add informational slide about JSR-354, its origins, and key contributors.
Include exercise guidance, pause slide, and workshop wrap-up.

Signed-off-by: Marcus Fihlon <marcus@fihlon.swiss>

slides/.gitignore

@@ -0,0 +1,9 @@
+.DS_Store
+.remote-assets
+.vite-inspect
+components.d.ts
+node_modules
+dist
+*.local
+*.pdf
+*.pptx

slides/.npmrc

@@ -0,0 +1,3 @@
+# for pnpm
+shamefully-hoist=true
+auto-install-peers=true

slides/README.md

@@ -0,0 +1,35 @@
+# Folien für den Workshop
+
+**Beyond BigDecimal: Money and Currency API in Java (JSR-354)**
+
+## Folien bearbeiten
+
+Die Folien werden in Markdown-Syntax in der Datei `slides.md` beschrieben. Enthaltene Grafiken und andere Dateien werden im Unterverzeichnis `public` abgelegt.
+
+Eine umfangreiche Dokumentation von Slidev gibt es online: https://sli.dev/guide/
+
+## Präsentation starten
+
+Ganz einfach im Terminal:
+
+```
+pnpm slidev
+```
+
+Anschliessend einfach `o` tippen, um den Standard-Browser mit der URL http://localhost:3030/ zu öffnen.
+
+## Folien exportieren
+
+Slidev beherrscht den Export der Präsentation als PDF und PowerPoint.
+
+### PDF
+
+```
+pnpm slidev export --format pdf
+```
+
+### PowerPoint
+
+```
+pnpm slidev export --format pptx
+```

slides/netlify.toml

@@ -0,0 +1,16 @@
+[build]
+publish = "dist"
+command = "npm run build"
+
+[build.environment]
+NODE_VERSION = "20"
+
+[[redirects]]
+from = "/.well-known/*"
+to = "/.well-known/:splat"
+status = 200
+
+[[redirects]]
+from = "/*"
+to = "/index.html"
+status = 200

slides/package.json

@@ -0,0 +1,19 @@
+{
+  "name": "jugch-gv-2026",
+  "type": "module",
+  "private": true,
+  "scripts": {
+    "build": "slidev build",
+    "dev": "slidev --open",
+    "export": "slidev export"
+  },
+  "dependencies": {
+    "@slidev/cli": "^52.14.1",
+    "@slidev/theme-default": "latest",
+    "@slidev/theme-seriph": "latest",
+    "vue": "^3.5.29"
+  },
+  "devDependencies": {
+    "playwright-chromium": "^1.58.2"
+  }
+}

slides/vercel.json

@@ -0,0 +1,7 @@
+{
+  "rewrites": [
+    { "source": "/(.*)", "destination": "/index.html" }
+  ],
+  "buildCommand": "npm run build",
+  "outputDirectory": "dist"
+}