document deployment

server/README.md

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+# Palace Server
+
+Minimal Go API server with SQLite for Palace collaborative features.
+
+## Setup
+
+```bash
+cd server
+go mod tidy
+go run main.go
+```
+
+Server runs on port 3001 by default (set PORT env var to change).
+
+## Resource Usage
+
+- Single binary (~10MB)
+- SQLite database file
+- Minimal memory footprint
+- No external dependencies in production
+
+## API Endpoints
+
+- `GET /api/spaces` - List all spaces
+- `GET /api/spaces/{id}` - Get space by ID  
+- `PUT /api/spaces/{id}` - Save/update space
+- `DELETE /api/spaces/{id}` - Delete space
+- `POST /api/spaces/{id}/notes` - Add note to space
+- `PATCH /api/spaces/{spaceId}/notes/{noteId}` - Update note
+- `DELETE /api/spaces/{spaceId}/notes/{noteId}` - Delete note