type: added
area: overlay

- Added a TsukiHime integration for downloading primary and secondary subtitles, mirroring the Jimaku flow: `Ctrl+Shift+T` (configurable via `shortcuts.openTsukihime`) opens an in-overlay modal with a Japanese primary tab and a secondary tab that follows `secondarySub.secondarySubLanguages`. It parses the current video filename, searches TsukiHime releases, lists extracted text subtitle tracks filtered by the active tab, then downloads the chosen track, decompresses it (requires the `xz` binary), saves it next to the video with a language suffix (`<video>.en.<ext>`, `.ja` for Japanese tracks, etc.), and loads Japanese into mpv's primary slot or configured secondary tracks into its secondary slot. No API key is required; also reachable via `subminer --open-tsukihime`, the `__tsukihime-open` keybinding command, and configurable under a new `tsukihime` config section. TsukiHime is the successor to Animetosho, which stops processing new releases in May 2026; it imported the Animetosho index and mirrors its attachment storage, so older releases stay reachable. Existing `animetosho`, `shortcuts.openAnimetosho`, `--open-animetosho`, and `__animetosho-open` inputs remain accepted as deprecated aliases.