feat(dashboard): add AIInsights loading skeleton

[shambavi2007]

Description

Fixes #367

Added a new AIInsightsSkeleton component to improve dashboard loading UX and prevent empty space before AI insights load.

Changes made

• Created components/dashboard/AIInsightsSkeleton.tsx
• Added 3 shimmer placeholder rows matching the AIInsights layout
• Integrated the skeleton into the right sidebar of DashboardLoading

Pillar

• 🎨 Pillar 1 — New Theme Design
• 📐 Pillar 2 — Geometric SVG Improvement
• 🕐 Pillar 3 — Timezone Logic Optimization
• 🛠️ Other (Bug fix, refactoring, docs)

Visual Preview

Checklist before requesting a review:

• I have read the CONTRIBUTING.md file.
• I have tested these changes locally.
• I have run npm run format and npm run lint locally and resolved all errors.
• My commits follow the Conventional Commits format.
• I have updated README.md if I added a new theme or URL parameter.
• I have started the repo.
• I have made sure that i have only one commit to merge in this PR.
• The SVG output matches the CommitPulse "premium quality" aesthetic standard.
• I joined the CommitPulse Discord community for contributor discussions, mentorship, and faster PR support.

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[Aamod007]

@shambavi2007 attach SS of skeletion loading

[shambavi2007]

@shambavi2007 attach SS of skeletion loading

@Aamod007 Attached the screenshot showing the dashboard skeleton loading state, including the AIInsights sidebar skeleton.

[Aamod007]

@shambavi2007 can you make it better

[shambavi2007]

@shambavi2007 can you make it better

@Aamod007 Updated the screenshot to better highlight the AIInsights skeleton loading state in the dashboard sidebar.

Also, could you please clarify if by “make it better” you meant improving only the screenshot visibility or if you would like a different skeleton animation/style as well?

[JhaSourav07]

@shambavi2007

can you make it in dark ?

[shambavi2007]

@shambavi2007

can you make it in dark?

@JhaSourav07 Updated the loading skeleton UI with a darker shimmer effect and improved card consistency to better match the dashboard theme. Attached the updated screenshot.