[KBRASK]

0.4.37: Generation previews are a frame sheet again with an optional loop, the editor can narrate a line in a chosen voice, Replace character takes two people, and Windows installs download less.

• The preview shown while a video is generated is a sheet of frames again. A new setting, Preview during generation, plays it as a loop of the video in progress instead. The preview is also shown when the window is short.
• In the editor, right-click an empty spot on the dialogue or recording track and choose Narration: write a line, pick a voice, and it is generated to the length of the selection. New tutorial chapter and tour card.
• Replace character takes a second person: the first picture replaces the person on the left, the second the person on the right (up to two people).
• Generated music follows the written description and avoids an instrument it rules out, such as "no piano". The first-use download of the music files shows its percent on the generation bar.
• Windows: when the graphics driver reports an error in the second pass, only the second pass is redone from the finished first pass instead of ending the request.
• Windows installs download about 469 MB less: the ComfyUI workflow-template packages are no longer installed.
• For multi-segment generation, segment progress now covers decoding and reaches 100% when finished.
• Export and subtitle jobs show their own names and progress in the Agent activity list; the creation panel shows planning and adding counts.
• Editor: the lines panel takes at most 40% of the editing area and scrolls inside, the five tracks stay visible, the resample menu is hidden while narrating, the audio button is now "Separate original sound", and characters, scenes and props sit in one row of equal squares.
• Tutorials add Text and subtitles, Replace two people and Your own LoRA. Tour: "Take me there" opens the right view first, the media tour starts with first and last frames, and the "Continue generating" card puts the start video on the timeline.
• The launcher points out a Windows PowerShell that cannot start; diagnostic reports on Windows record the lowest available memory and page-fault counts during sampling; in the update dialog, old and new waveforms are easier to tell apart and the ruler's last label is complete.
• Download report is also available in reopened windows, the library and segment results, and the Reuse settings and Copy path buttons are centered; the top bar no longer overlaps in a narrow window.