> Mux is updating this PR on behalf of Mike.
## Summary
- Set a UTF-8 `LC_CTYPE` fallback for reconnecting PTYs when no
effective UTF-8 locale is present.
- Preserve non-empty `LC_ALL` so explicit user locale choices still win.
- Add tmux glyph regression coverage for reconnecting PTYs, plus unit
coverage for the env helper.
- Stabilize the tmux regression by keeping the pane alive until the
glyph output is observed.
- Keep the env helper unit test expectations OS-aware for Windows and
cover unhyphenated UTF8 locales.
## Validation
- `go test ./agent/reconnectingpty -run TestWithTerminalEnv -count=1`
- `go test ./agent -run '^TestAgent_ReconnectingPTY$/Buffered$'
-count=1`
- `go test ./agent -run '^TestAgent_ReconnectingPTY$' -count=1`
- `make lint`
- `git commit` pre-commit hook
- `git push` pre-push hook
Michael Suchacz
cd54861e4f