v1.8.9 - usable at the console, and installable (deb / brew / choco)

Usability: hgit's reports used to go only to a serial port - a person typing in the QEMU window saw nothing. Hgit("interactive"); now echoes them to the screen and turns AutoComplete off (the bundle launcher runs it); missing-file probes no longer print red errors. Bundle: refreshed TempleOS disk with hgit 1.8.9 (guest-verified by checksum; tools/build-bundle.py). Install: hgit_1.8.9_all.deb (sudo apt install ./hgit_1.8.9_all.deb), Homebrew tap VectorSophie/hgit, Chocolatey sources in packaging/chocolatey/ (not yet on the community feed). Verified on real QEMU: full + standing regression, screenshot evidence in experiments/126. Untested here: the brew/choco installs themselves (no macOS/Windows host).