amankum2004 opened a new pull request, #61899:
URL: https://github.com/apache/airflow/pull/61899
## Problem
The "Triggered DAG" button only appeared **after** the parent task completed
execution. During RUNNING/QUEUED states, the button was completely hidden.
## Solution
This change makes the Triggered DAG button appear as soon as the child DAG
run is created/queued, instead of only after the parent task finishes.
### Changes
* **Added a reusable helper** in task runner to push operator extra-link
XComs:
* `_push_operator_extra_links_to_xcom(...)`
* **In `_handle_trigger_dag_run(...)`**, after pushing `trigger_run_id`, we
now immediately push the `TriggerDagRunLink` XCom:
* `_link_TriggerDagRunLink`
* **Kept existing finalize behavior** by reusing the same helper in
`finalize()`.
### Behavior After This Change
* While task is still running/deferred, once child DAG run is triggered, the
"Triggered DAG" link is already available to the UI
* No behavior change for conflict path (`DAGRUN_ALREADY_EXISTS`)
* No change to task state transitions
## Testing
Updated task-sdk unit tests to expect immediate `_link_TriggerDagRunLink`
XCom write:
* `test_handle_trigger_dag_run`
* `test_handle_trigger_dag_run_wait_for_completion`
<img width="1920" height="855" alt="Screenshot from 2026-02-14 10-04-54"
src="https://github.com/user-attachments/assets/246c2a93-788a-463a-be6b-7c2231400277";
/>
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