Add expandable tasks view for friends to show all tasks instead of "+N more"

[Copilot]

Addresses poor UX where users could only view the first 3 of their friends' tasks, with remaining tasks hidden behind "+N more" indicators. Users can now expand any friend's tasks section to view all items.

Changes

UI Improvements

• Added expand/collapse toggles to friend tasks sections on home page and friends page
• Displays first 3 tasks by default with "+N more" button; clicking expands to show all tasks
• Visual indicator (rotating caret icon) shows expanded/collapsed state
• "Show less" button collapses the list back

Code Quality

• Extracted task rendering logic into shared utility (lib/taskRenderer.js) to eliminate duplication
• Fixed styling inconsistencies (consistent truncate class usage)
• Proper function declaration ordering to avoid hoisting issues

Example

Before: User sees "+2 more" and cannot access those tasks

Friend Activity:
- Task 1
- Task 2  
- Task 3
+2 more

After: User can expand to see all tasks

Friend Activity:
- Task 1
- Task 2
- Task 3
- Task 4
- Task 5
Show less ▲

All task status indicators (completed, in progress, not started) are preserved with consistent visual treatment across both pages.

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Project	Deployment	Actions	Updated (UTC)
momentum	Ready	Preview, Comment	May 22, 2026 5:32pm

[shobhit2603]

I have reviewed the code and i think everything looks fine.