style: format web/src with oxfmt defaults (via vp fmt)

One-time mechanical sweep, isolated from any functional change.
- oxfmt defaults: double quotes, semicolons, 2-space indent, LF,
  printWidth 100, trailing commas, bracket spacing, arrow parens.
- vite.config.ts gains an fmt.ignorePatterns block for web/static:
  vendored/minified assets (htmx.min.js, compiled css) must never
  be reformatted.
- Verified: rebuild after the sweep produces byte-identical JS/CSS
  bundles; only sourcemaps changed (they embed sourcesContent).

web/src/docs.ts

@@ -15,7 +15,7 @@ function toggleSection(el: HTMLElement): void {
   const items = el.nextElementSibling as HTMLElement;
   const arrow = el.querySelector(".section-arrow") as HTMLElement;
   if (!items || !arrow) return;
-  
+
   const isCollapsed = items.getAttribute("data-collapsed") === "true";
 
   if (isCollapsed) {
@@ -30,9 +30,7 @@ function toggleSection(el: HTMLElement): void {
 }
 
 function initializeDocsSearch(): void {
-  const searchInput = document.getElementById(
-    "docs-search",
-  ) as HTMLInputElement;
+  const searchInput = document.getElementById("docs-search") as HTMLInputElement;
   const searchResults = document.getElementById("docs-search-results");
 
   if (!searchInput || !searchResults) return;
@@ -125,14 +123,15 @@ function initializeCodeCopyButtons(): void {
     document.querySelectorAll("pre code").forEach((block) => {
       const pre = block.parentElement;
       if (!pre) return;
-      
+
       const wrapper = document.createElement("div");
       wrapper.className = "relative group";
       pre.parentNode.insertBefore(wrapper, pre);
       wrapper.appendChild(pre);
 
       const button = document.createElement("button");
-      button.className = "absolute top-2 right-2 bg-background-secondary text-text-secondary px-2 py-1 rounded text-xs opacity-0 group-hover:opacity-100 transition-opacity border border-border hover:text-accent";
+      button.className =
+        "absolute top-2 right-2 bg-background-secondary text-text-secondary px-2 py-1 rounded text-xs opacity-0 group-hover:opacity-100 transition-opacity border border-border hover:text-accent";
       button.textContent = "Copy";
       button.onclick = async () => {
         await navigator.clipboard.writeText(block.textContent || "");
@@ -154,4 +153,10 @@ Alpine.data("docs", () => ({
   initializeCodeCopyButtons,
 }));
 
-export { toggleSidebar, toggleSection, initializeDocsSearch, highlightCurrentPage, initializeCodeCopyButtons };
+export {
+  toggleSidebar,
+  toggleSection,
+  initializeDocsSearch,
+  highlightCurrentPage,
+  initializeCodeCopyButtons,
+};