Tool walkthrough videos: collapsible player + volume-served /tv/ route

Twelve narrated walkthroughs, one per Suite tool, in Marty's cloned voice.
No screen recording involved: Playwright drives and records the real UI,
ElevenLabs narrates, ffmpeg muxes. Pipeline lives outside this repo at
../video-pipeline.

Placement (Marty's call): TOP of each tool page but COLLAPSED — a one-line
"Watch the walkthrough" bar that auto-opens on a member's first visit to that
specific tool and stays shut after. A video in a separate library never gets
watched; an embedded player pushes the tool below the fold on mobile for every
returning member. First-visit autoplay is muted, so it is never a surprise
noise, and every localStorage access is guarded because it throws outright in
private windows.

Served from the data volume via /tv/<slug>.mp4, NOT from public/. That
directory is already 199MB and another 33MB of MP4 would ride along on every
deploy forever; this way a video can also be re-cut and dropped in without a
rebuild. The route implements HTTP range requests — without them the scrub bar
renders but cannot seek, which looks broken in a way people rarely report.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

public/suite-copy.html

@@ -58,5 +58,6 @@
   <p class="cp-note"><strong style="color:var(--text)">Teach it forward:</strong> when this saves you fifteen minutes, show your two how to use it — that's how the whole team gets faster. <br>Everything the engine writes follows the team's rules: no income promises, no invented numbers, honest about risk. It's still your name on the post, so read before you send. Independent team resource · No income is guaranteed · Cryptocurrency involves risk.</p>
 </main>
 <script src="/suite-copy.js"></script>
+<script src="/tool-video.js" data-video="/tv/suite-copy-engine.mp4" data-title="Watch the Copy Engine walkthrough" data-key="copy" defer></script>
 <script src="/chat.js" defer></script>
 <script src="/translate.js" defer></script><script src="/tg-app.js" defer></script><script src="/nav-dash.js" defer></script></body></html>