Initial commit: Hermes Chat v2

Svelte 5 + shadcn-svelte + Tailwind CSS v4 chat interface
for Hermes Agent with Monaco editor, file drag/drop,
artifacts, image preview, and real session management.

- SSE streaming via hermes CLI proxy
- File upload + drag/drop with image preview
- Code artifacts with Monaco editor
- Markdown + highlight.js syntax highlighting
- Full settings (model, provider, temp, system prompt)
- 12 shadcn UI components
- Dark/light theme

.vscode/extensions.json

@@ -0,0 +1,6 @@
+{
+	"recommendations": [
+		"svelte.svelte-vscode",
+		"bradlc.vscode-tailwindcss"
+	]
+}