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fix(cli): ignore stale HERMES_TUI_RESUME env

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HERMES_TUI_RESUME is an internal env var the Python wrapper exports to hand
a session ID off to the Ink TUI. Because _launch_tui started from
os.environ.copy(), any exported/stale value in the user's shell leaked
through — so plain `hermes --tui` would try to resume a missing session
and leave the UI at 'error: session not found' with no live session.

Drop HERMES_TUI_RESUME from the env before conditionally re-setting it
from the argparse-resolved resume_session_id. Tests cover both the drop
path and the set-from-arg path.

Salvage of #28080 by @noctilust.
This commit is contained in:
noctilust 2026-05-19 00:10:09 -07:00 • committed by Teknium
parent afffb8d9a5
commit 425aba766b
2 changed files with 50 additions and 0 deletions
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8
hermes_cli/main.py
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@ -1278,6 +1278,14 @@ def _launch_tui(
if "--expose-gc" not in _tokens:
_tokens.append("--expose-gc")
env["NODE_OPTIONS"] = " ".join(_tokens)
# HERMES_TUI_RESUME is an internal hand-off from the Python wrapper to the
# Ink app. Because we start from os.environ.copy(), an exported/stale value
# in the user's shell would otherwise make a plain `hermes --tui` try to
# resume a non-existent session and leave the UI at "error: session not
# found" with no live session. Only forward a resume id that argparse
# resolved for this invocation; direct `node ui-tui/dist/entry.js` users can
# still set HERMES_TUI_RESUME themselves.
env.pop("HERMES_TUI_RESUME", None)
if resume_session_id:
env["HERMES_TUI_RESUME"] = resume_session_id