Help gets a Try-it list; dialogs scroll on a phone; the installer's history note in plain words

Every screen was swept in the browser on NA Ingest with Editing on (31 screens, no script
errors); the job dialogs ran taller than a phone screen, so dialogs now scroll.

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>

settings/ui/app.js

@@ -809,6 +809,17 @@
       <h2>Pages</h2><p><a href="/key-guide.html" target="_blank">What each key does</a> · <a href="/cheat.html" target="_blank">Cheat sheet (one page)</a> · <a href="/where.html" target="_blank">Where things are</a></p>
       <h2>Changing something</h2><ol><li>Switch Editing on (top right): the editing code and your first name.</li><li>Change it where it lives: a key on Keys, a computer on Computers, a fix on Fixes, the rest on Site setup.</li><li>The badge at the top counts your changes; it opens Review & Apply.</li><li>Review reads your changes back in plain words and says what will happen (the deck goes purple for a few seconds; pages re-import only when the layout changed). Press APPLY.</li><li>If the watchdog does not come back, the previous version is put back by itself. History keeps every version; Go back to any of them.</li></ol>
       <h2>First-day walkthrough (10 minutes, no code needed)</h2><ol><li>Overview: the live deck. Green, red, purple.</li><li>Click a red key (or any key): read what it checks and what holding it will do.</li><li>Logs › Watchdog, filter "holds": find a hold and what it did.</li><li>Keys › Restart page: each key restarts one thing, even when green.</li><li>Overview: when alarms are on and when auto-fix may act by itself.</li><li>Computers › Map: which computer a key talks to, and what runs there.</li><li>Help › What each key does: the whole deck in words.</li></ol>
+      <h2>Try it (ten minutes with Editing on; nothing is live until you press APPLY)</h2><ol>
+        <li>Keys › HD2: tick "may have no disk" off and on; the badge counts the change; Review & Apply reads it back. Throw the draft away.</li>
+        <li>Keys: drag LED onto the tray, then back onto its cell. Keys › + New key "HD7", give it a check (Is a recorder OK?), delete it again.</li>
+        <li>Overview › Add or remove a HyperDeck: untick 5 and 6 and look at Keys (the cells stay empty); Review says the page re-imports. Throw it away.</li>
+        <li>Overview › Change the playlist: paste a playlist link, Look it up, see the name follow on Site setup › Spotify and the play fix. Apply if you mean it.</li>
+        <li>Overview › Add a MIDI link to the MIDI key for a peer that exists; Run this fix now on that check (it goes through the watchdog like a hold).</li>
+        <li>Fixes › VISTA: change the program file to Vista2.exe and watch the command rebuild; put it back.</li>
+        <li>Computers › Setup › Lighting PC: open the script, Copy; Computers › Lighting PC › Remove this computer (read what would go), Cancel.</li>
+        <li>Site setup › ATEM › Pick the newest from the folder (it says what differs), Discard. Site setup › Site › Export site bundle.</li>
+        <li>History: open the last version, Go back to this version, look at Review, Throw it away. Undo the last change does the same for the newest.</li>
+        <li>Make a small real change (a note on Computers › Gear), APPLY, watch the steps, then Undo it and APPLY again.</li></ol>
       <h2>The words a key can show</h2>${glossary}
       <h2>Things only a person can do</h2><ul><li>Run the set-up script on a new computer (ARD on a Mac, PowerShell as administrator on a PC), allow Accessibility on the Studio B Mac, click Allow on the Spotify prompt once.</li><li>Create Companion's custom variables and the blink trigger, add pages, install modules, name the Stream Decks.</li><li>Type the Netgear login into the keychain; keep Google Drive signed in for the saved switcher files.</li><li>Save a new switcher file from ATEM Software Control when the show changes, then pick it on Site setup › ATEM.</li></ul>
       <h2>Companion facts (found by trying)</h2><dl class="kv">${(facts.facts || []).map(([q, a]) => `<dt>${esc(q)}</dt><dd>${esc(a)}</dd>`).join("")}</dl>`;