fix(editor): fix compact line spacing not working with Milkdown

[sfarestam]

Summary

• Compact line spacing setting (Settings > Appearance > Line spacing) had no effect after the TipTap-to-Milkdown editor migration
• The CSS selectors targeted .ProseMirror.prose but Milkdown renders .ProseMirror as a separate element without the prose class (.prose is on a parent div)
• Removed .prose from all compact spacing selectors so they match .prose-tight .ProseMirror

Test plan

• Open Settings > Appearance, set Line spacing to "Compact"
• Open a task description with multiple paragraphs and list items
• Verify spacing is visibly tighter than "Normal" mode
• Switch back to "Normal" — spacing should return to default

🤖 Generated with Claude Code

Greptile Summary

Fixes compact line spacing not applying in the Milkdown editor by removing the .prose class co-requirement from all five prose-tight CSS selector groups. After the TipTap→Milkdown migration, .ProseMirror no longer carries the .prose class, so the old .prose-tight .ProseMirror.prose selectors never matched Milkdown's DOM structure.

Confidence Score: 5/5

Safe to merge — minimal, targeted CSS fix with no logic changes

Single-file CSS change that broadens five selector groups from requiring .ProseMirror.prose to .ProseMirror. Fix is correct, well-scoped, and no P0/P1 issues found. All other .ProseMirror.prose selectors (editor-themed theming) are correctly left untouched.

No files require special attention

Important Files Changed

Filename	Overview
packages/apps/app/src/renderer/src/assets/main.css	Removes .prose class qualifier from 5 compact-spacing selector groups so they match Milkdown's .ProseMirror (which no longer carries .prose after TipTap migration)

Flowchart

%%{init: {'theme': 'neutral'}}%%
flowchart TD
    A[User sets Line Spacing: Compact] --> B[prose-tight class added to editor container]
    B --> C{Which editor?}
    C -->|TipTap| D[".ProseMirror.prose element"]
    C -->|Milkdown| E[".ProseMirror element\n.prose on parent div"]
    D --> F["OLD: .prose-tight .ProseMirror.prose ✓\nNEW: .prose-tight .ProseMirror ✓"]
    E --> G["OLD: .prose-tight .ProseMirror.prose ✗\nNEW: .prose-tight .ProseMirror ✓"]
    F --> H[Compact spacing applied]
    G --> H

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