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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

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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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api/services/workflow/node_specs/_base.py
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@ -243,6 +243,8 @@ class GraphConstraints(BaseModel):
max_incoming: Optional[int] = None
min_outgoing: Optional[int] = None
max_outgoing: Optional[int] = None
min_instances: Optional[int] = None
max_instances: Optional[int] = None
model_config = ConfigDict(extra="forbid")