Respect prefers-reduced-motion FIX

[Mitch5000]

Description

Fixes accessibility issue where TableSkeleton (src/components/TableSkeleton.tsx) applied Tailwind's animate-pulse unconditionally, ignoring OS-level prefers-reduced-motion: reduce. Adds motion-reduce:animate-none as a CSS-only reduced-motion variant, preserves the static bar layout, and updates TableSkeleton.test.tsx to assert the reduced-motion class is present. No new attack surface; purely an accessibility accommodation.

Closes: reduced-motion issue for TableSkeleton

Checklist

• I added a CHANGELOG.md entry under the next ## [x.y.z] section (see the Format note at the top of CHANGELOG.md), or this PR is docs-only / test-only / internal tooling and doesn't change user-facing behavior.

• Tests added/updated for the change.

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Files changed:

• /home/user/src/components/TableSkeleton.tsx
• /home/user/src/components/TableSkeleton.test.tsx
• /home/user/CHANGELOG.md

Validation:

• 3/3 tests pass (TableSkeleton.test.tsx)
• 100% file coverage (TableSkeleton.tsx)
• ESLint clean on modified files
• Build error (PoolsPanel.tsx) is pre-existing and unrelated
• Confidence: 99%

Closes #125