QuotaPane v1.3.0

Pace: know whether you will make it to reset, not just where you are.

Added

• Pace ticks. Every quota bar carries a thin tick at the elapsed
  share of its window. Fill short of the tick means you are under
  budget; fill past it means you are consuming faster than time is
  passing. Shown in both themes — it is information, not decoration.
• Forecast-to-limit. QuotaPane estimates your burn rate from
  recent polls; when a window's projected exhaustion lands before its
  reset, one line appears under that provider: "at this pace: 7d full
  in ~9h" — amber, turning cardinal inside six hours. When you are
  safe it shows nothing at all. Forecasts wait for roughly fifteen
  minutes of evidence before speaking, and a window reset clears the
  history. (Any 5h-window warning is necessarily inside the six-hour
  band, so session-window warnings are always cardinal.)
• --pace-demo renders a fixed synthetic scenario — no polling,
  no credentials read, no network at all — to see the feature without
  waiting for a bad week.
• quotapane-cli --json: every window object (headline and
  per-model) gains duration_secs — always present, null when the
  provider neither stated nor implied a window length. This is the
  only JSON surface change in this release.

Zero new dependencies. Verify this release with the three commands in
the README's Verifying a release section — checksums, cosign keyless
bundle, and GitHub build provenance.

Full Changelog: v1.2.0...v1.3.0