v2.0.1

TickTune v2.0.1 — three live defects

Three defects reported from the console on v2.0.0, the day it shipped.

Fixes

• Settings opens again after an import that skipped files. Two skipped
  files logged in the same millisecond gave the diagnostics list two
  identical keys, and the panel threw instead of opening.
• The automatic dimming over a background picture works, and so does
  the cover-art tint. Both read the picture by fetching it, which the
  site's own security policy refuses for local files — so since v0.7.0
  neither had ever run in production. They now read it as an image; the
  policy is unchanged, and a picture that cannot be read is logged.
• Local files and YouTube links no longer mix. Switching between
  Playlist and YouTube used to keep one shared list: links pasted after
  a switch joined the files, and Start could play a file on the YouTube
  player in silence. Each source now keeps its own list, and switching
  back finds the other one as it was left — including files that were
  still importing when you switched.

Under the hood

• The CSP check now acts in the browser — picks a picture, stages a
  cover — under the real policy, instead of only loading pages.
• An empty YouTube tab says to paste a link (English, Vietnamese,
  Japanese).

Full notes: docs/16-ROADMAP.md, "v2.0.1 — three live defects".