Organizing a completed download deleted its done entry, losing the
original video URL. Now a hidden sidecar '.<filename>.metube.json' is
written next to the video at organize time with url/title/uploader/
website/downloaded_at. /library/files attaches it as 'meta', library
delete removes it, and the library browser shows an external-link icon
opening the original page for files that have it. No backfill for
previously organized files.
Also records the published 1.18 image in DEPLOY.md.
Make the app root fill at least the full height of the viewport, and
make the main content grow to fill the empty space - aligning the footer
with the bottom of the page at all times.
The iOS-compatible video may not be the best quality. Add a separate quality option to accommodate people who want the best available versus the best compatible with iOS's strict requirements.
Testing with https://www.youtube.com/watch?v=YiRMs5ZhcH4 where the best quality video is 2160p and not iOS-compatible.
With best quality, the VP9 video format is used (better quality but not iOS-compatible):
```
% ffprobe -hide_banner Who\ Can\ Find\ the\ Weirdest\ PC\ Parts\ on\ AliExpress?.mp4
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'Who Can Find the Weirdest PC Parts on AliExpress?.mp4':
Metadata:
major_brand : isom
minor_version : 512
compatible_brands: isomiso2mp41
encoder : Lavf60.16.100
Duration: 00:19:02.72, start: 0.000000, bitrate: 10941 kb/s
Stream #0:0[0x1](und): Video: vp9 (Profile 0) (vp09 / 0x39307076), yuv420p(tv, bt709), 3840x1920, 10805 kb/s, 29.97 fps, 29.97 tbr, 16k tbn (default)
Metadata:
handler_name : ISO Media file produced by Google Inc. Created on: 06/15/2024.
vendor_id : [0][0][0][0]
Stream #0:1[0x2](eng): Audio: aac (LC) (mp4a / 0x6134706D), 44100 Hz, stereo, fltp, 128 kb/s (default)
Metadata:
handler_name : ISO Media file produced by Google Inc.
vendor_id : [0][0][0][0]
```
With "Best (iOS)" quality, the H264 video (lower quality but iOS-compatible) is used:
```
% ffprobe -hide_banner Who\ Can\ Find\ the\ Weirdest\ PC\ Parts\ on\ AliExpress?.mp4
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'Who Can Find the Weirdest PC Parts on AliExpress?.mp4':
Metadata:
major_brand : isom
minor_version : 512
compatible_brands: isomiso2avc1mp41
encoder : Lavf60.16.100
Duration: 00:19:02.72, start: 0.000000, bitrate: 1846 kb/s
Stream #0:0[0x1](und): Video: h264 (High) (avc1 / 0x31637661), yuv420p(tv, bt709, progressive), 1920x960 [SAR 1:1 DAR 2:1], 1710 kb/s, 29.97 fps, 29.97 tbr, 30k tbn (default)
Metadata:
handler_name : ISO Media file produced by Google Inc.
vendor_id : [0][0][0][0]
Stream #0:1[0x2](eng): Audio: aac (LC) (mp4a / 0x6134706D), 44100 Hz, stereo, fltp, 128 kb/s (default)
Metadata:
handler_name : ISO Media file produced by Google Inc.
vendor_id : [0][0][0][0]
```
Included a README note about the new quality option.