Pin omp-manager e542439. The picker now supplies TERM=xterm-256color, COLORTERM=truecolor, LANG/LC_ALL=C.UTF-8 to Docker exec and runs the attaching tmux client with -u. Detached server settings alone did not repair the client.
Reproduced blank borders/backgrounds, missing glyphs and basic red/cyan colors with the original launch and Docker-style client environment using actual Debian tmux 3.3a + pinned OMP. Same-session side-by-side client comparison restores rendering. Delivered actual tool-execution and /settings screenshots; Callie approved submission. New regression fails on old attach arguments; real OMP PTY regression fails with old client defaults while inner capture-pane still passes, then passes with the fixed client environment. 13 manager tests, Go tests/race/vet, Nix picker build and homura toplevel eval pass. Theme and frozen picker UI unchanged. Local mock provider, no billing; direct homura Docker attach not independently executed from reef. No host activation performed.