folder-transfer v0.15.2

folder-transfer v0.15.2

The complete Rust ft drop (supersedes the partial 0.15.1). PowerShell scripts unchanged.

Artifacts

• folder-transfer-0.15.2.zip — the PowerShell sender (reference implementation).
• ft-0.15.2-x86_64-windows.zip — Rust ft.exe for Windows (+ server.example.json).
• ft-0.15.2-x86_64-linux.tar.gz — Rust ft for Linux, static musl (+ server.example.json).

Highlights

• No subcommand needed — ft <folder|server.json> serves; ft <connection.json> [DEST] receives.
• Server pushes config after connecting, so the connection file/command carry only
  server/port/token/fingerprint (the client gets ignore patterns + stream count automatically).
• Interactive destination — omit it and the client asks (Enter = current folder).
• Highlighted, cream-coloured "copy this" command printed by the server.
• Live aggregated progress on both sides: N files, X MB in MM:SS @ Y MB/s (summed across all
  streams, with elapsed time; mid-file ticks so one big file isn't silent).
• Fixes: empty-string config values (clientOut/serverHost/allowIp = "") treated as
  "not set"; filesystem errors name the offending path; --allow-ip enforced.

See CHANGELOG.md. Cross-OS (Windows↔Ubuntu) verified byte-for-byte.