0.1.1 distribution and CD fixes

[tamirelazar]

Distribution and release-pipeline fixes for 0.1.1.

• Linux release binary is now a statically linked musl build (static-pie), so the single tslime-linux-x86_64 download runs on any x86_64 Linux distribution regardless of glibc version.
• macOS prebuilt binary is no longer published — the previous one was Gatekeeper-blocked and mislabeled x86_64 while actually being arm64. macOS installs via Homebrew (brew install tamirelazar/tslime/tslime) or cargo install tslime, both of which avoid Gatekeeper. The macOS build is kept in CI as a compile smoke-test (honest tslime-macos-arm64 artifact, not attached to releases).
• README install section rewritten around cargo install (primary) + Homebrew (macOS) + prebuilt binaries (Linux/Windows, with the Windows SmartScreen click-through note).
• Version bumped to 0.1.1 with a CHANGELOG section.

Verified: release.yml smoke-run green on all three OSes (musl build under the 4 MB ceiling); downloaded Linux artifact confirmed static-pie linked.

Targets dev; promotion to master + tag/publish happen via the release runbook.