fix: resolve catalog validation errors and eslint issues

[kaic]

Summary

Fixes catalog validation errors discovered by automated tests and resolves pre-existing eslint issues.

Issues Found

The new Jest validation suite (1158 tests) discovered:

1. LastPass using invalid category security-privacy instead of security
2. Unused imports in script-utils.js
3. ESLint errors in context files blocking CI pipeline

Changes

Catalog fixes:

• Moved LastPass from security-privacy/ to security/ directory
• Updated category field and import path in aggregator
• Removed empty security-privacy directory

Lint fixes:

• Removed unused imports in script-utils.js
• Fixed SelectionContext.jsx: lazy initialization instead of setState in useEffect
• Fixed ThemeContext.jsx: proper context export pattern

Testing

• All 1158 validation tests pass
• Build succeeds
• Lint passes with 0 errors

Validation Coverage

Tests validate: software/config schemas, category enums, license enums, unique kebab-case IDs, winget ID format, hex colors, non-empty command arrays.

This PR demonstrates the new CI pipeline catching real issues before merge.