Prepare aligned Core 0.4.4 release

[sidmohan0]

Problem

The phone timestamp and decimal-number credit-card fixes (#41 and #40) are merged but are not included in published Core 0.4.3.

Solution

• Align Rust, Python, Node, and WASM package versions and lockfiles at 0.4.4.
• Document the fixes and their remaining numeric/phone ambiguities.
• Publish all four runtime packages from the same merged release commit after checks pass.

Validation

Passed Rust formatting, Clippy, workspace tests (129 passed; one existing benchmark ignored), diff checks, and all four release-tag/version checks. Installed-binding checks run in CI before publication. Registry installations will be checked after publishing.