Preserve sign and honor currency exponents in money formatting

[roncodes]

Problem

Utils::numbersOnly() normalized input with preg_replace('/[^0-9]/', '', ...), which stripped the leading minus sign. Because Utils::moneyFormat() (and the Money cast) route their input through it, negative monetary amounts silently lost their sign — e.g. moneyFormat(-500, 'USD') rendered as $5.00 instead of -$5.00. This is a real bug for refunds and adjustments.

While investigating, the money-format path was also checked against currencies whose minor-unit exponent isn't 2 — zero-decimal (JPY/KRW) and three-decimal (BHD/KWD).

Changes

• numbersOnly() now preserves a minus sign that appears before the first digit, so signed values keep their sign. A hyphen occurring after digits (e.g. in a phone number like 276-7156) is deliberately not treated as a sign, keeping existing non-monetary usage intact. Empty / non-numeric / null still collapse to 0.
• moneyFormat() documents and relies on the minor-units contract: the amount is an integer number of the currency's smallest unit, and the money adapter derives decimal placement from each currency's ISO-4217 exponent. No 2-decimal assumption — JPY/KRW format with no decimals, BHD/KWD with three (500 fils → 0.500).
• Behavior of the Money cast follows automatically: it will now store negative amounts instead of flipping them positive.

Tests

• Added cknow/laravel-money to require-dev so the money tests run against the real Cknow\Money\Money adapter instead of a stub.
• Rewrote UtilsMoneyFormatTest to cover positive / zero / negative USD, formatted-string input, JPY/KRW (0-decimal), BHD/KWD (3-decimal), and non-numeric / null. Assertions target the numeric core of the output so they stay stable across ICU symbol/spacing differences.
• Added dedicated numbersOnly sign-preservation coverage in UtilsTest.
• Updated ReportQueryExporterTest, which had a cross-file dependency on the old stub, to assert the real adapter output.

Verification

• Full suite: 1329 passed, 0 failed (pre-existing deprecations/warnings unchanged).
• php-cs-fixer clean on all changed files; no new PHPStan findings on the changed methods.

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