[UI/UX] Standardise loading skeleton UI across all data-fetching views

[nanaf6203-bit]

Problem Statement

Components mix <Spinner />, <LoadingProgressBar />, and custom CSS loaders. The visual language is inconsistent. Property cards flicker between empty and populated without a consistent skeleton.

Acceptance Criteria

• One Skeleton primitive from shadcn/ui registry adopted everywhere
• Storybook stories snap per-component skeleton states
• Visual regression baseline for skeletons captured

Implementation Notes

Remove LoadingSpinner.tsx after migration (or keep as alias).

Files Likely Affected

• src/components/ui/Skeleton.tsx
• Anywhere using LoadingSpinner

Difficulty / Effort

• Difficulty: Easy
• Effort: T-Shirt M

Labels

ux, priority:medium

[victortanimu05-stack]

@victortanimu05-stack has applied to work on this issue as part of the Stellar Wave Program's 7th wave.

I would like to work on this issue

ℹ️ Repo Maintainers: To accept this application, review their application or assign @victortanimu05-stack to this issue.

[A6dulmalik]

@A6dulmalik has applied to work on this issue as part of the Stellar Wave Program's 7th wave.

I'd like to work on this issue if it's available.

I've gone through the description and understand the expected functionality, edge cases, and testing requirements. I'll implement the solution incrementally, ensure it meets the acceptance criteria, and include the required unit and integration tests before submitting a PR.

Please assign this issue to me if it's available. Looking forward to contributing!

ℹ️ Repo Maintainers: To accept this application, review their application or assign @A6dulmalik to this issue.

[drips-wave]

Congratulations, @A6dulmalik! 🎉 Your application was accepted by the repo's maintainers, and the issue is due on July 30, 2026.

🧑‍💻 @A6dulmalik: Please resolve the issue such that the repo's maintainers have enough time to review your contribution before the due date. You'll earn Points for completing the issue on-time, which will make you eligible for a share of the Stellar Wave Program's reward pool.

Warning

When opening a PR, please link it to this issue to ensure it gets tracked accurately. Points are awarded when this issue is marked as completed by the maintainer.

🤠 Repo maintainers: Please keep an eye on the contributor's progress and review their work before the due date. You can manage this issue, including adjusting its complexity and points, here.

🌊 Happy Wave 🌊

[drips-wave]

This issue has been completed by @A6dulmalik as part of the Stellar Wave Program's 7th Wave 🥳

😎 @A6dulmalik: You earned 200 Points for completing this issue! After the current Wave ends, you'll be eligible for a percentage of the Wave's reward pool based on the percentage of total points you've earned. Learn more here. You can also Leave a review to share your experience working on this issue.

🧑‍💻 Repo maintainers: How'd the contributor do? Leave a review to share your experience working with them.