Expose the LLM token-level streaming deltas (EventReasoningDelta /
EventContentDelta) to every client channel and add user-initiated
interrupt (cancel generation / send interrupt message) to all three
frontends, preserving the existing interrupt-injection semantics.
SDK/events:
- EventReasoningDelta, EventContentDelta constants exported in the
public/internal SDK event alias tables.
CLI plugin:
- handleChat subscribes to both delta events and forwards
reasoning_delta / content_delta JSON frames (channel-filtered);
aggregated reasoning/tool_call/response frames still fire as before.
- New /stop (alias /interrupt) builtin injects an interrupt via
InjectInterrupt(cliSource, cliChannel) - matches interceptLoop
semantics: cancels an active stream and re-injects the message as
a [中断消息] for a restarted turn; with no active LLM it behaves
as a plain input.
Waiter client (line mode + TUI):
- streamRender accumulates delta chunks and redraws the current line;
a reset frame (stream abandoned, e.g. user interrupt) flushes the
partial buffer so the next turn does not concatenate onto stale
content. Aggregated frames terminate the delta line and render the
final text (old servers without deltas behave exactly as before).
- TUI merges content_delta into the in-flight agent message and seals
it (final flag) on response/tool_call/error so subsequent deltas
never append to a finished message.
WebUI:
- SSE handler subscribes to the two delta events but does NOT record
them into the replay ring - reconnection replays only aggregated
events (the final truth), avoiding duplicate delta accumulation.
- POST /api/v1/chat/interrupt calls InjectInterrupt(webui, webui)
with optional message; fronted by a Stop button shown only while
a generation is in flight.
dashboard.html / GUI app.js:
- Stop button next to Send (hidden until chatLoading); interruptChat
POSTs /chat/interrupt. Delta listeners append incrementally;
agent_output (aggregated) now replaces (not appends) the in-flight
content and marks _final; reset frames finalize the partial message.
process.go:
- chatStreamWithFallback preserves the context.Canceled/
DeadlineExceeded contract: a user interrupt returns the canceled
error (never a partial-content success) so the existing continue
branch restarts the turn with the [中断消息]. A reset
EventContentDelta is published so connected clients drop stale
partial renderings before the new turn begins.
Verified: /stop 'msg' via waiter triggers 'interrupt from cli/cli' in
interceptLoop; unit TestChatStreamCancelPreservesInterrupt confirms the
canceled error propagates instead of being swallowed.
