chore: prepare v0.1.5

[thynomex]

Summary

• Synchronizes the Wallscape version at 0.1.5 across npm, Cargo, and Tauri configuration.
• Documents the compatible dependency maintenance release.

Verification

• npm ci — 0 vulnerabilities
• npm run check — 0 errors and 0 warnings
• npm run build
• cargo check
• cargo fmt --check

The dependency update itself already passed all 80 Rust tests, Clippy with warnings denied, a full local MSI build, and hosted GitHub checks in #12.