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fix: disable duplicate trigger nodes in workflow builder (#402)

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* fix: disable duplicate trigger nodes in workflow builder

AddNodePanel: disable trigger buttons and show tooltip when a trigger
already exists on the canvas, using bySpecName to identify trigger-
category specs from the live node list.
useWorkflowState: preflight in saveWorkflow rejects saves with multiple
trigger nodes via a sonner toast before the network request is made.
text_chat_session_service: include the original exception message in
TextChatSessionExecutionError so the HTTP 500 detail surfaces the root
cause without DB inspection.

Closes #378

* style: format test_text_chat_session_service.py with ruff

* chore: retrigger CI checks

* fix(workflow): enforce node instance constraints

---------

Co-authored-by: Abhishek Kumar <abhishek@a6k.me>
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nuthalapativarun 2026-06-19 03:29:30 -07:00 • committed by GitHub
parent 7c31dd3eec
commit 7d053320df
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5
api/services/pipecat/run_pipeline.py
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@ -470,7 +470,10 @@ async def _run_pipeline(
workflow_run_id, initial_context=merged_call_context_vars
)
workflow_graph = WorkflowGraph(ReactFlowDTO.model_validate(run_workflow_json))
workflow_graph = WorkflowGraph(
ReactFlowDTO.model_validate(run_workflow_json),
skip_instance_constraints_for={"trigger"},
)
# Pre-call fetch: fire early so it runs concurrently with remaining setup
pre_call_fetch_task = None