test(StatsCard): verify asynchronous service layer mocking and local cache stubs

[aanyacloud]

Description

Fixes #2631

Added a dedicated mock integration test suite for the StatsCard component to verify mocked dependencies, icon rendering, fallback behavior, and chart data handling.

Pillar

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

Visual Preview

N/A (Test-only changes)

Checklist before requesting a review:

• I have read the CONTRIBUTING.md file.
• I have tested these changes locally (npm test / vitest).
• I have run npm run format and npm run lint locally and resolved all errors (if applicable).
• My commits follow the Conventional Commits format (test(statscard): ...).
• I have updated README.md if needed (not required for this change).
• I have starred the repo.
• I have made sure that I have only one commit to merge in this PR.
• The change is test-only and does not affect production UI.
• (Recommended) I joined the CommitPulse Discord community for contributor discussions, mentorship, and faster PR support.

Changes Made

• Added components/dashboard/StatsCard.mock-integrations.test.tsx
• Mocked framer-motion dependencies for isolated testing
• Mocked lucide-react icon components
• Verified rendering of Flame, TrendingUp, and GitCommit icons
• Added fallback icon coverage for unknown icon names
• Added chart data rendering validation
• Added 5 passing test cases

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