_MyAnythingList Requirements - Canonical Handoff

1. Absolute Operating Rule

Once a requirement is agreed, it becomes the documented standard and must not drift unless the user explicitly changes it.

No casual restyling.
No accidental regression of layout, glow, rounded corners, spacing, control behavior, startup behavior, or naming conventions.
Before changing anything, future sessions must read this document first and treat it as a checklist.

The first four source lines must begin exactly like this, with zero whitespace before the DOCTYPE:

<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8" />
  <title>The Real FREE PRESS</title>

All comments, metadata blocks, notes, and JavaScript objects must appear only after those lines.

The interface must feel safe, orderly, calming, hypnotic, visually clear, and intelligent.
Zero redundant wording.
Zero disorder.
No ugly, accidental, student-looking dialogs or inconsistent button sizing.
Controls must be balanced, symmetrical, color-consistent, and visually deliberate.
Spacing must be minimal, intentional, and visually even.
The selected-tile magical pulsing green glow is a major product feature and must remain vivid.
Thumbnail panel appearance must remain consistent with the long-established canonical design. Only explicit user-approved spacing adjustments may change.

The full wall needs enough safe zone for displays that crop outermost pixels.
The footer needs a real bottom safe zone.
Space above the footer must be the minimum aesthetically acceptable amount.
Top control bar spacing must remain minimal and visually symmetric.
No wasted vertical space.
No reintroduction of excessive black gaps.
Dropdown text must remain vertically centered.
Startup modal must always sit below the control-bar bottom divider line and never cover the control area.

Tile corners must stay rounded inside the border.
Thumbnail panels must preserve their canonical formatting and styling.
No accidental switch to square outer corners, border loss, ugly crops, or flattened styling.
The green pulsing glow must have enough outer breathing room to render visibly.
Hover/selection styling should enhance, never destabilize, the canonical look.

YouTube thumbnails must always request the highest available resolution first.
Priority order is:
1. maxresdefault
2. sddefault
3. hqdefault
4. mqdefault
5. default
Print uses are a primary requirement. Thumbnail quality must never casually degrade.
On playlist load, visible top thumbnails should appear immediately while the rest continue loading.
The wall should never go fully black during loading when avoidable.

The main control bar button must read Load a New Playlist.
That main button opens the playlist modal, not the file picker directly.
If the modal is opened at startup with no playlist, title should read No playlist loaded.
If the user opens it manually later, title should read Load a New Playlist.
Modal wording must be minimal, non-redundant, and centered where appropriate.
In the modal:
- Titles/status/labels centered where appropriate.
- Actual URL text box left-aligned.
- No duplicate labels.
- Buttons should be visually consistent in width and style.
- Close button belongs at the bottom.
The modal should indicate that the control bar is currently inactive/focused away, but without blurring the whole interface into uselessness.
README/info/language access should remain possible even before thumbnails are loaded.

Remote playlist loading from the modal must work from local downloaded builds and hosted builds.
If direct in-page fetching is unreliable, the accepted fallback is to reopen/navigate using ?myanythinglist=<URL>.
If the remote input appears blank but has the demo URL as placeholder/default sample, pressing the remote-load button must still load that sample URL.
The family-friendly default sample playlist is https://8k.art/_MyAnythingList.txt.
As soon as a playlist is accepted, top visible thumbnails should appear immediately, then the rest should continue loading.
No black-screen pause during large playlist loads when avoidable.
If no playlist is loaded, the wall container should not appear as an empty broken-looking panel region.

The editor is a true _MyAnythingList.txt editor.
It must preserve and display raw UTF-8 source text character-for-character.
It must not reconstruct only compacted extracted URLs.
Even with no playlist loaded, user must be able to open the editor, paste one YouTube URL, save, and immediately see results.
Editor should open scrolled to the very top.
Editor controls must include:
- Load a New Playlist
- Download THIS _MyAnythingList.txt
- Save & Rebuild Wall
- Cancel
Download output must use the exact raw text currently being edited.

Exported thumbnail names must not look like URLs.
Canonical thumbnail filename format: MyAnythingList_Thumbnail_YYYYMMDD_HHMMSS.jpg or PNG equivalent.
Do not casually change this naming convention after it is set.

High-quality export is a core requirement.
Support exact print-oriented presets for:
- 3.5" × 2" business cards at 300 DPI
- 3.5" × 2" business cards at 600 DPI
- standard postcards at 300 DPI
- standard postcards at 600 DPI
WYSIWYG QR placement/scale is required.
Do not introduce unintended white background blocks behind QR in exports.

Add a future feed type called STREAM.
Users must be able to enter playable video stream URLs directly in playlists.
This requirement is now part of the standard and should be preserved for the next session.