session.interrupt on session A was blast-resolving pending
clarify/sudo/secret prompts on ALL sessions sharing the same
tui_gateway process. Other sessions' agent threads unblocked with
empty-string answers as if the user had cancelled — silent
cross-session corruption.
Root cause: _pending and _answers were globals keyed by random rid
with no record of the owning session. _clear_pending() iterated
every entry, so the session.interrupt handler had no way to limit
the release to its own sid.
Fix:
- tui_gateway/server.py: _pending now maps rid to (sid, Event)
tuples. _clear_pending takes an optional sid argument and filters
by owner_sid when provided. session.interrupt passes the calling
sid so unrelated sessions are untouched. _clear_pending(None)
remains the shutdown path for completeness.
- _block and _respond updated to pack/unpack the new tuple format.
Tests (tests/test_tui_gateway_server.py): 4 new cases.
- test_interrupt_only_clears_own_session_pending: two sessions with
pending prompts, interrupting one must not release the other.
- test_interrupt_clears_multiple_own_pending: same-sid multi-prompt
release works.
- test_clear_pending_without_sid_clears_all: shutdown path preserved.
- test_respond_unpacks_sid_tuple_correctly: _respond handles the
tuple format.
Also updated tests/tui_gateway/test_protocol.py to use the new tuple
format for test_block_and_respond and test_clear_pending.
Live E2E against the live Python environment confirmed cross-session
isolation: interrupting sid_a released its own pending prompt without
touching sid_b's. All 78 related tests pass.
dca439fe92