- TUI: replace per-call bufio.Scanner with a goroutine+channel reader
(lineReader) so a single scanner lives for the connection lifetime;
previous pattern silently dropped messages due to scanner read-ahead
- test-tui.sh / test-network.sh: add `return 0` to wait_port — when the
port opens and the while condition becomes false, bash returned the
condition's exit code (1) to the caller, tripping set -e immediately
- .gitignore: use /tui (root-only) instead of tui to avoid ignoring cmd/tui/
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
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