SubMiner/changes/fix-mpv-logging-config-forwarding.md

type: fixed area: logging

• Forward SubMiner logging.level into launcher-started and Windows shortcut-started mpv sessions, including mpv log verbosity, plugin script logging, and plugin-launched app logging.
• Add numeric logging.rotation, defaulting to 7 days of retained daily app, launcher, and mpv logs.
• Log Windows mpv launch diagnostics, IPC socket connection state, subtitle track summaries, Yomitan extension load state, dictionary counts, and expected/active IPC socket values when plugin auto-start skips due to a socket mismatch.
• Add logging.files toggles for app, launcher, and mpv logs, with mpv logs disabled by default unless explicitly enabled for debugging.