Missing upper bound validation for --limit in spot history

The spot history command accepts a --limit option but only validates the lower bound (limit > 0). According to the API documentation, the maximum allowed limit is 15. Currently, users can pass --limit 1000 which may cause silent failures or unexpected API behavior.

Expected behavior:

• Accept --limit values from 1 to 15
• Throw clear error if user exceeds 15

Current behavior:

• Accepts any positive integer without upper bound check

Location: src/commands/SpotCommand.ts:612-615

Suggested fix: const limit = Number(opts.limit); if (isNaN(limit) || limit <= 0 || limit > 15) { throw new Error("--limit must be between 1 and 15."); }

Type: Bug - Input Validation