Initial commit: Dioxus project scaffold

Add project configuration and main entry point.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

.gitignore

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+/target
+/dist
+/.dioxus
+/.omc

Cargo.toml

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+[package]
+name = "yggdrasil"
+version = "0.1.0"
+edition = "2021"
+
+[dependencies]
+dioxus = { version = "0.7.9", features = ["fullstack", "router"] }
+serde = { version = "1.0", features = ["derive"] }
+tokio = { version = "1.52", features = ["full"], optional = true }
+
+[features]
+default = []
+web = ["dioxus/web"]
+server = ["dioxus/server", "dep:tokio"]

Dioxus.toml

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+[application]
+name = "yggdrasil"
+default_platform = "web"
+out_dir = "dist"
+
+[web.app]
+title = "Yggdrasil - Dioxus SSR"
+
+[web.watcher]
+watch_path = ["src", "Cargo.toml"]
+
+[web.resource]
+style = []
+script = []
+
+[web.resource.dev]
+style = []
+script = []

src/main.rs

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+use dioxus::prelude::*;
+
+fn main() {
+    dioxus::launch(App);
+}
+
+#[component]
+fn App() -> Element {
+    let mut count = use_signal(|| 0);
+    let mut text = use_signal(|| "...".to_string());
+
+    rsx! {
+        div { style: "padding: 2rem; font-family: system-ui, sans-serif;",
+            h1 { "Dioxus SSR Fullstack" }
+
+            p { "This page is rendered on the server and hydrated on the client." }
+
+            div { style: "margin: 1rem 0;",
+                h2 { "Counter: {count}" }
+                button { onclick: move |_| count += 1, "Increment" }
+                button { onclick: move |_| count -= 1, "Decrement" }
+            }
+
+            div { style: "margin: 1rem 0;",
+                h2 { "Server Function" }
+                button {
+                    onclick: move |_| async move {
+                        match get_server_greeting().await {
+                            Ok(data) => text.set(data),
+                            Err(e) => text.set(format!("Error: {}", e)),
+                        }
+                    },
+                    "Call Server"
+                }
+                p { "Server said: {text}" }
+            }
+        }
+    }
+}
+
+#[server]
+async fn get_server_greeting() -> Result<String, ServerFnError> {
+    Ok("Hello from the server!".to_string())
+}