v0.3.0

• Added explicit full and type-and-stacktrace exception data policies. The safe
  policy omits error messages, NSError domains/codes, and other raw error text.
• Made MetricKit collection use the safe policy by default, with bounded
  threads/frames and without the raw diagnostic payload or termination reason.
• Added a minimized Apple platform-context policy that omits exact model,
  locale, architecture, and OS build for apps with stricter privacy contracts.
• Labeled manual and MetricKit errors with stable capture-source and data-policy
  metadata so Logister can distinguish redacted reports in the inbox.