chore(format): run prettier over src/ and scripts/

Formatting was configured but never enforced: `bun run format:check`
reported 199 unformatted files and ran in no workflow and in no git hook,
so .prettierrc (printWidth 100, trailing commas) described an intention
rather than the tree.

This is the one-time sweep that makes the check gateable. Whitespace and
token-reflow only -- no behavioural change: `bun run check` reports 0
errors and all 1053 frontend tests pass before and after.

Kept out of every other commit on purpose. A 199-file diff mixed with
real changes is unreviewable, and the next commit turns format:check
into a hard CI gate so this cannot silently accumulate again.

src/lib/components/sync/PendingSyncModal.svelte

@@ -23,7 +23,9 @@
   <div
     class="fixed inset-0 z-50 flex items-end justify-center bg-black/60 p-0 sm:items-center sm:p-4"
     onclick={handleBackdropClick}
-    onkeydown={(e) => { if (e.key === "Escape") onClose(); }}
+    onkeydown={(e) => {
+      if (e.key === "Escape") onClose();
+    }}
     role="dialog"
     aria-modal="true"
     aria-labelledby="pending-sync-title"
@@ -35,16 +37,19 @@
       role="none"
     >
       <div class="flex items-center justify-between border-b border-gray-800 px-6 py-4">
-        <h2 id="pending-sync-title" class="text-lg font-semibold text-white">
-          Waiting to sync
-        </h2>
+        <h2 id="pending-sync-title" class="text-lg font-semibold text-white">Waiting to sync</h2>
         <button
           onclick={onClose}
           class="-m-2 p-2 text-gray-400 transition-colors hover:text-white"
           aria-label="Close"
         >
           <svg class="h-5 w-5" fill="none" stroke="currentColor" viewBox="0 0 24 24">
-            <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M6 18L18 6M6 6l12 12" />
+            <path
+              stroke-linecap="round"
+              stroke-linejoin="round"
+              stroke-width="2"
+              d="M6 18L18 6M6 6l12 12"
+            />
           </svg>
         </button>
       </div>