fix(editor): match task list item spacing with bullet and ordered lists

[sfarestam]

Summary

• Task list items had margin: 0 and line-height: 1.25, while bullet/ordered list items used margin: 0.125em and inherited line-height
• This caused visible vertical spacing differences between list types
• Aligned both TipTap and Milkdown task list items to use the same 0.125em margins and inherited line-height

Test plan

• Create a bullet list, ordered list, and task list in a description
• Verify vertical spacing between items is consistent across all three list types
• Verify compact line spacing mode still works correctly for task lists

🤖 Generated with Claude Code

Greptile Summary

This PR aligns vertical spacing for TipTap and Milkdown task list items with bullet and ordered lists by setting margin-top/margin-bottom to 0.125em (up from 0) and removing the hardcoded line-height: 1.25 so it inherits from the parent. The compact-mode (.prose-tight) override retains higher CSS specificity and continues to zero out task list item margins correctly.

Confidence Score: 5/5

Safe to merge — minimal, targeted CSS change with no logic or specificity issues.

All changes are P2 or lower; the margin/line-height alignment is correct, and the compact-mode (.prose-tight) cascade is preserved by higher selector specificity (0,3,0,1 vs 0,2,0,2).

No files require special attention.

Important Files Changed

Filename	Overview
packages/apps/app/src/renderer/src/assets/main.css	Aligns task list item margins (0 → 0.125em) and removes explicit line-height to match bullet/ordered list spacing; compact-mode specificity preserved

Flowchart

%%{init: {'theme': 'neutral'}}%%
flowchart TD
    A[Task list item rendered] --> B{Is .prose-tight active?}
    B -- No --> C[Apply .ProseMirror ul/li task selector\nmargin: 0.125em, line-height: inherited]
    B -- Yes --> D[.prose-tight .ProseMirror.prose li\nspecificity 0,3,0,1 wins]
    D --> E[margin: 0 — compact mode]
    C --> F[Spacing matches bullet/ordered lists]

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