✨ Quality: robustness and documentation - useThrottle

[galiprandi]

💡 What:

• Added defensive validation for the limit parameter in the useThrottle hook to handle NaN, 0, and negative values.
• Updated the useThrottle JSDoc to include the @default 500 tag for the limit parameter.
• Added comprehensive unit tests for these edge cases in lib/hooks/useThrottle.test.ts.

🎯 Why:

• The hook previously relied on native setTimeout behavior for invalid limit values, which can be inconsistent or result in unexpected 1ms/0ms delays.
• Documentation was missing explicit information about the default limit value.
• Unit tests were missing coverage for invalid numeric inputs, which are common when values are derived dynamically.

📊 Impact:

• Robustness: The hook now predictably performs an immediate update when an invalid limit is provided.
• Maintainability: Better documentation and 100% branch coverage for the hook's logic.
• Consistency: The test file now follows the project's standard import patterns.

✅ Verification:

• Ran pnpm test lib/hooks/useThrottle.test.ts (8 passed).
• Verified 100% branch coverage with pnpm test:coverage.
• Ran pnpm lint to ensure no regressions in code quality.

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PR created automatically by Jules for task 16891675594808657242 started by @galiprandi

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