Move scroll animations to Rust/WASM, enable Hasura, and move bookmarks to home sidebar

Port AutoScroll and Headline scroll logic from Vue/JS to Rust compiled
to WASM via wasm-pack. Add multi-stage Docker build for WASM compilation,
Vite WASM plugins, and top-level await for WASM init. Enable Hasura
service in docker-compose. Move bookmarks from a separate route to an
inline sidebar component on the home page. Fix ToggleHeader click
propagation.

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

vue/crates/stp_wasm/Cargo.toml

@@ -3,6 +3,9 @@ name = "stp_wasm"
 version = "0.1.0"
 edition = "2024"
 
+[lib]
+crate-type = ["cdylib"]
+
 [dependencies]
 js-sys = "0.3.85"
 wasm-bindgen = "0.2.108"
@@ -10,6 +13,13 @@ web-sys = { version = "0.3.85", features = [
   "console",
   "Document",
   "Element",
+  "HtmlElement",
   "Window",
   "Animation",
+  "CssStyleDeclaration",
+  "ResizeObserver",
+  "ResizeObserverEntry",
+  "ResizeObserverSize",
+  "EventTarget",
+  "MouseEvent",
 ] }