feat(gateway): bring /undo [N] to messaging platforms (parity with CLI/TUI)#36699
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…I/TUI)
Gateway /undo was wired into every platform but still ran the old
single-turn hard-truncate. Now it matches the CLI/TUI: /undo [N] backs
up N user turns (default 1, clamps to oldest), soft-deletes the
truncated rows on disk (active=0, kept for audit, hidden from re-prompts
and search) via SessionDB.rewind_to_message, evicts the cached agent so
the next turn rebuilds from the active-only transcript (the gateway's
equivalent of the CLI's in-place history surgery + memory invalidation),
and echoes the backed-up message text so the user can copy/edit and
resend — platforms have no editable composer to prefill.
- gateway/session.py: SessionStore.rewind_session(session_id, n) wraps
the soft-delete primitive; load_transcript already returns active-only
- gateway/run.py: _handle_undo_command parses [N], calls rewind_session,
evicts the agent, echoes target text; confirm-prompt detail is count-aware
- locales: undo.removed gains {turns}; new undo.invalid_count, all 16 langs
- tests: tests/gateway/test_undo_rewind_session.py (6 cases)
Contributor
🔎 Lint report:
|
| Rule | Count |
|---|---|
unresolved-import |
1 |
First entries
tests/gateway/test_undo_rewind_session.py:13: [unresolved-import] unresolved-import: Cannot resolve imported module `pytest`
✅ Fixed issues: none
Unchanged: 4962 pre-existing issues carried over.
Diagnostics are surfaced as warnings — this check never fails the build.
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Jun 4, 2026
…I/TUI) (NousResearch#36699) Gateway /undo was wired into every platform but still ran the old single-turn hard-truncate. Now it matches the CLI/TUI: /undo [N] backs up N user turns (default 1, clamps to oldest), soft-deletes the truncated rows on disk (active=0, kept for audit, hidden from re-prompts and search) via SessionDB.rewind_to_message, evicts the cached agent so the next turn rebuilds from the active-only transcript (the gateway's equivalent of the CLI's in-place history surgery + memory invalidation), and echoes the backed-up message text so the user can copy/edit and resend — platforms have no editable composer to prefill. - gateway/session.py: SessionStore.rewind_session(session_id, n) wraps the soft-delete primitive; load_transcript already returns active-only - gateway/run.py: _handle_undo_command parses [N], calls rewind_session, evicts the agent, echoes target text; confirm-prompt detail is count-aware - locales: undo.removed gains {turns}; new undo.invalid_count, all 16 langs - tests: tests/gateway/test_undo_rewind_session.py (6 cases)
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Summary
/undo [N]now works the same on every messaging platform as it does in the CLI/TUI. The gateway command was wired into all platforms but still ran the old single-turn hard-truncate — this brings it to parity.Changes
SessionStore.rewind_session(session_id, n)wrapsSessionDB.rewind_to_message— soft-deletes the truncated rows (active=0, kept for audit, hidden from re-prompts and search) instead of hard-rewriting the transcript.load_transcriptalready returns the active-only view._handle_undo_commandparses[N], callsrewind_session, evicts the cached agent (so the next turn rebuilds from the truncated transcript and memory caches refresh — the gateway's equivalent of the CLI's in-place history surgery), and echoes the backed-up message text so the user can copy/edit and resend. The destructive-confirm detail is count-aware.undo.removedgains{turns}; newundo.invalid_count— all 16 languages.tests/gateway/test_undo_rewind_session.py(6 cases).Why echo instead of prefill
Messaging platforms have no editable composer to pre-fill (unlike CLI/TUI), so the gateway echoes the backed-up message text in its reply with "Copy/edit the text above and send it to re-prompt from here." Same soft-delete + N-turn semantics, platform-appropriate UX.
Behavior
/undo/undo 3/undo 99/undo abcValidation
rewind_sessiontests + 261 across the full related suites (test_undo_command,test_hermes_state,test_memory_session_switch,test_i18n).removed+invalid_count(no format errors, all placeholders resolve).Follow-up to the merged CLI/TUI
/undo [N]work (#21910).Infographic