## Summary
- `copilotkit_interrupt` now handles string and dict resume values from
LangGraph 1.x's `interrupt()`
- Previously crashed with `AttributeError: 'str' object has no attribute
'content'` or `KeyError: -1`
- Type-checks response: str returned directly, dict JSON-serialized,
list uses existing `[-1].content` path
## Test plan
- [x] Red-green test: string resume value returns without crash
- [x] Red-green test: dict resume value returns JSON string
- [x] Test: list resume value still works (existing behavior)
- [x] Full test suite passes (15/15)
Closes#3096
Apply the same parentMessageId orphan fix to crewai_flow_messages_to_copilotkit
where the elif chain meant tool-call messages never emitted the parent assistant
message. Also refine langgraph fix: use explicit None check instead of truthiness,
add inline comments explaining the invariant, remove unused pytest import,
replace fragile commit hash in docstring, and add test for list-type content.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Reverts the `if content:` guard from c5ec0f8512 that skipped emitting
the assistant message when content was empty. OpenAI models commonly
send empty content for tool-call-only responses, but the assistant
message is structurally required as the anchor for tool call grouping
via parentMessageId. Without it, tool calls become orphaned and the
frontend can't reconstruct tool call rendering on thread reconnect.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
When Anthropic models return multi-part content lists, only the first
element was used and the rest discarded. Now iterates all parts and
concatenates text blocks, preserving the full message content.
LangGraph 1.x can return string or dict resume values from interrupt(),
not just lists. The code now type-checks the response: strings are
returned directly, dicts are JSON-serialized, and lists use the
existing [-1].content path.
Avoid emitting spurious empty assistant messages for tool-call-only
AIMessages (common with OpenAI models where content is empty string).
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
langchain_messages_to_copilotkit previously skipped creating the assistant
message when an AIMessage had tool_calls, causing missing context in chat
history on reconnect. Also adds ActionExecutionMessage type guard in
copilotkit_messages_to_langchain to prevent KeyError on non-tool messages
with parentMessageId.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Alem Tuzlak