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/bookPicker.ts

@@ -51,9 +51,7 @@ Alpine.store("bookPicker", {
     const filterDiv = document.getElementById("book-picker-filters");
     if (!filterDiv) return;
 
-    const inputs = filterDiv.querySelectorAll(
-      'input[type="text"]',
-    ) as NodeListOf<HTMLInputElement>;
+    const inputs = filterDiv.querySelectorAll('input[type="text"]') as NodeListOf<HTMLInputElement>;
     inputs.forEach((input) => {
       input.value = "";
     });
@@ -90,10 +88,7 @@ Alpine.store("bookPicker", {
       });
 
       if (response.ok) {
-        showToast(
-          `Added ${this.selectedBooks.size} books to collection`,
-          "success",
-        );
+        showToast(`Added ${this.selectedBooks.size} books to collection`, "success");
         this.close();
         location.reload();
       } else {