Schedule pickers, and target progress at one row

"Check feeds every" becomes a number plus a unit dropdown in both global
and per-feed settings; parse_interval gained weeks to back it. The
per-feed dropdown can select the global default, clearing the override.

Fixes progress painting every pending row: the event carried no enclosure
id, so the handler had nothing to target and set the width on all of them.
Adding a feed looked like it was downloading everything. Progress,
DownloadDone and DownloadError now carry the enclosure id.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01AdXho5tTkjFLeUXKbEjKBh

tests/page-smoke.js

@@ -39,7 +39,13 @@ const ctx = {
   window: { isSecureContext: false, addEventListener(){} },
   localStorage: { getItem: () => null, setItem(){}, removeItem(){} },
   navigator: { clipboard: undefined, sendBeacon(){}, mediaSession: undefined },
-  fetch: () => Promise.resolve({ ok: true, status: 200, json: () => Promise.resolve([]), text: () => Promise.resolve('') }),
+  fetch: (url) => Promise.resolve({
+    ok: true, status: 200, text: () => Promise.resolve(''),
+    json: () => Promise.resolve(
+      String(url).includes('/api/settings')
+        ? { schedule: 'every 60m', every_mins: 60, download_dir: '/tmp', max_total_gb: 0, max_age_days: 0 }
+        : []),
+  }),
   EventSource: function () { this.close = () => {}; },
   MediaMetadata: function () {},
   Blob: function () {},
@@ -59,6 +65,33 @@ try {
   process.exit(1);
 }
 
+// The modals are built on demand, so a load-time check never reaches them. Drive the
+// ones that construct markup from live data, which is where a bad field reference hides.
+const feed = {
+  id: 'f', url: 'https://x/rss', title: 'A Feed', image: null, folder: null,
+  keywords: ['a'], allow_explicit: false, auto_download: true, max_new_per_check: 3,
+  schedule: 'every 6h', schedule_mins: 360, every_mins: 360,
+  last_checked: 1, next_check: 2, entries: 1, downloaded: 0, unread: 1, last_error: null,
+};
+const drive = [
+  ['settingsModal', () => ctx.settingsModal(feed)],
+  ['settingsModal (no override)', () => ctx.settingsModal({ ...feed, schedule: null, schedule_mins: null })],
+  ['downloadLatestModal', () => ctx.downloadLatestModal(feed)],
+  ['removeFeed', () => ctx.removeFeed(feed)],
+  ['prefsModal', () => ctx.prefsModal()],
+];
+for (const [name, fn] of drive) {
+  try {
+    const r = fn();
+    if (r && typeof r.catch === 'function') r.catch(e => {
+      console.error(`FAIL: ${name} rejected: ${e.message}`); process.exit(1);
+    });
+  } catch (e) {
+    console.error(`FAIL: ${name} threw: ${e.message}`);
+    process.exit(1);
+  }
+}
+
 if (missing.length) {
   console.error('FAIL: handlers wired to elements that do not exist: ' + [...new Set(missing)].join(', '));
   process.exit(1);