- Replace timestamp-based log macros with colored CLI output system
using the `colored` crate
- Banner on startup: ☀ HELIOS REMOTE + separator line
- Colored prefixes: cyan → (status), green ✓ (ok), red ✗ (error),
yellow ⚡ (incoming commands)
- Session info on connect: ✓ Connected · <label> · Session <id>
- No timestamps, no [CMD]/[OK]/[ERR] prefixes
- Suppress tracing output by default (RUST_LOG=off unless set)
- Add build.rs to embed logo.ico as Windows resource via winres
- Add winres as build-dependency in client Cargo.toml
