- RelayAdapter.send_exec_approval / send_slash_confirm / send_clarify:
override the base text fallbacks with ONE platform-abstract `prompt` op
(connector renders Discord components / Telegram inline keyboards /
Slack Block Kit / WhatsApp buttons+lists). Option sets mirror the native
adapters exactly (once/session/always/deny with the same
allow_session/allow_permanent/smart_denied gating; once/always/cancel;
choices + Other). Clarify option ids are positional (c0..cN/other) —
choice text is arbitrary UTF-8, callback budgets are 64 bytes.
- Pending-prompt registry: gateway-minted 8-hex prompt ids →
{kind, session_key, extras}; one answer wins, lazy expiry, unanswered
prompts swept opportunistically. Wire timeout_s stays advisory.
- _consume_prompt_response (wired into _on_inbound AND the Discord
passthrough lane): routes answers to the SAME primitives the native
button handlers call — tools.approval.resolve_gateway_approval,
tools.slash_confirm.resolve, tools.clarify_gateway
resolve/mark_awaiting_text — then acks in-channel. Unknown/expired ids
fall through as command-shaped text (typed-reply degradation, the
relay's analog of the native 'approval expired' edit).
- Discord type-3 stub replaced: an hp1:<prompt>:<option> custom_id decodes
to a structured prompt_response (codec mirrored from the connector's
promptCodec); foreign custom_ids keep the legacy best-effort text shape.
- MessageEvent.prompt_response field + ws_transport wire parsing (additive).
- react ack lifecycle: on_processing_start/complete → `react` ops
(👀 → ✅/❌, remove-then-add), op-gated on supported_ops, best-effort by
contract (a react failure never touches the turn).
- Op gating throughout: a connector not advertising `prompt` gets
success=False from send_exec_approval/send_slash_confirm (run.py's text
fallback takes over — same contract as a failed native button send) and
the base numbered-text clarify; `react` silently no-ops.
- docs/relay-connector-contract.md §4: prompt / prompt_response / react
semantics (callback token, budgets, authorization-parity, foreign-id
behavior, per-platform react mappings).
- tests: tests/gateway/relay/test_relay_interactive.py (19) — option-set
rendering + gating matrices, registry consume-once/expiry, resolver
routing for all three kinds (monkeypatched primitives), fall-through
cases, Discord hp1 decode + foreign-id shape, react lifecycle
(success/failure/cancelled), op-gated/best-effort react.
Cross-repo pair: gateway-gateway 'Phase 3 interactive' PR (prompt/react
senders on all four lanes + interaction ingest).
