Add a ⛔ 中断 button to live streaming cards; Feishu's native confirm
dialog is the confirmation step, so no extra card round-trip is needed.
- builder.ts: render interrupt action (danger button + confirm) while the
run is live; new `interrupted` flag renders a 已中断 footer instead of
完成/失败 on the complete card.
- streaming-card.ts: finish(text, { interrupted }) threads the flag into
the final patch; overflow cards suppress the button.
- runner.ts: RunRequest gains abortController, passed to the SDK query;
abort surfaces as RunStatus "interrupted" (no error) in the catch.
- trigger.ts: activeRuns registry maps runId → AbortController; onCardAction
resolves the interrupt button, authorizes agent.cancel, aborts the run.
Interrupted runs persist as CANCELED (spec RunState.canceled, terminal →
lock released per ADR-0002).
- authorizer.ts: agent.cancel now consults PermissionSettings.agentCancel
(MANAGE_ONLY/DISABLED) — previously only agentTrigger was honored, but
spec/PermissionGrant deliberately splits these knobs ("谁能触发" ≠
"谁能取消"). Default role remains MANAGE (Capability.normalCancel).
Tests: runner abort unit test, trigger interrupt + denied integration
tests, three agent.cancel authorization tests (manage allowed, edit denied,
DISABLED policy denies even manage). 26 files / 175 tests pass.
hongjr03