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/reader/pdf-search.ts

@@ -60,17 +60,14 @@ export function buildPageText(
     const t = item.transform ?? [1, 0, 0, 1, 0, 0];
     const baseline = t[5] ?? 0;
     const x = t[4] ?? 0;
-    const size =
-      Math.abs(item.height) || Math.abs(t[3]) || Math.abs(t[0]) || 10;
+    const size = Math.abs(item.height) || Math.abs(t[3]) || Math.abs(t[0]) || 10;
     const w = Math.abs(item.width) || 0;
     const h = size;
 
     let sep = "";
     if (text && !text.endsWith(" ") && prevRight != null) {
       const newLine =
-        item.hasEOL ||
-        prevBaseline == null ||
-        Math.abs(baseline - prevBaseline) > size * 0.5;
+        item.hasEOL || prevBaseline == null || Math.abs(baseline - prevBaseline) > size * 0.5;
       const gap = x - prevRight;
       if (newLine || gap > size * 0.2) sep = " ";
     }
@@ -106,9 +103,7 @@ export async function extractPdfPages(
     const page = await pdf.getPage(i + 1);
     const viewport = page.getViewport({ scale: 1 });
     const tc = await page.getTextContent();
-    pages.push(
-      buildPageText(tc.items, viewport.width, viewport.height, i),
-    );
+    pages.push(buildPageText(tc.items, viewport.width, viewport.height, i));
     onProgress?.((i + 1) / num);
   }
   return pages;

web/src/reader/settings-manager.ts

@@ -21,9 +21,7 @@ export async function loadSettings(): Promise<ReaderSettings> {
     return local ? JSON.parse(local) : getDefaultSettings();
   }
 }
-export async function saveSettings(
-  settings: Partial<ReaderSettings>,
-): Promise<void> {
+export async function saveSettings(settings: Partial<ReaderSettings>): Promise<void> {
   const token = getToken();
   const current = await loadSettings();
   const updated = { ...current, ...settings };