MyToken!!!!! 0.4.1

Full Changelog: v0.4.0...v0.4.1

• A leftover backup no longer blocks an upgrade. If an earlier attempt
  left a mytoken.db.pre-provider-v1.db or mytoken.db.pre-instance-v1.db
  behind, the migration writes its own backup beside it under a timestamped
  name instead of refusing to start, and the error message names the file it
  actually tried. Nothing is ever overwritten, reused or deleted.
• A failed start says so in a window. A database or migration error used
  to quit without showing anything; it now opens a window with the error, the
  database path, what to do about it, a button to reveal the data folder and
  a way to quit.
• The sources card lists your sources again. The card could come up with
  only its subtitle once the settings page had been reloaded, as if no tool
  had ever been found.
• Codex quota shows the last reading the logs contain. Quota was only
  published while new records were being indexed, so a source that was
  already fully scanned never reported anything at all. A bounded read of the
  tail of the newest rollout files now finds the most recent usable reading
  without rescanning events, advancing cursors or guessing from tokens, and
  the card states the age of the reading and why a pace cannot be computed.
• Claude quota says when there is nothing to read. The card marks a
  credentials file that is not there instead of offering it as ready, and
  still reads nothing until you enable it.
• The settings page stops re-running its heavy panels on every commit.
  Each store commit re-ran the pricing, source and 90-day scope queries, which
  kept the load queue busy while the page was open. They now load when the
  page is opened or when their own data changes.
• The provider ranking merges one endpoint into one row. Unidentified
  endpoints were keyed per session, so a single provider appeared once for
  every conversation.