fix(scale): reject non-decimal numeric options

[aiirvizionz]

Summary

• Rejects non-decimal JavaScript numeric forms such as 1e2 and 0x10 in scale CLI numeric options
• Keeps plain decimal integers for counts/percentages and plain decimal finite values for prices
• Extends scale parser tests for integer, non-negative integer, and positive finite number options

Verification

• node_modules/.bin/vitest.CMD run packages/cli/src/commands/scale.test.ts
• node_modules/.bin/tsc.CMD -p packages/cli/tsconfig.json --noEmit
• git diff --check