[jason810496]

Stack (bottom to top): #74042, #74035, #74043, #74036, #74037, #73845, #73846, #73847

Part of the native Dag e2e stack. Builds on #74037, the TypeScript Dag importer layer.

• Replays TS SDK: add conditional branching with dag.if #73443, TS SDK: add multi-way branching with dag.switch #73444 and TS SDK: add triggerDagRun to the native Dag surface #73445 in order, one commit each, so the native e2e layer can run native TypeScript Dags.
  • TS SDK: name a task's inputs, and take its id from the handler #73437, TS SDK: draw order-only edges with before and after #73438, TS SDK: add task groups to the native Dag surface #73439, TS SDK: serialize a native Dag to Dag JSON #73441 and TS SDK: answer the Dag-parsing request from bundle.serve #73442 are in main.
  • TS SDK: reject a Dag whose order-only edges form a cycle #73440 is closed: core rejects a Dag with a cycle instead (Move Dag cycle detection from the Task SDK to shared #74034, Validate a serialized Dag and fill its unset settings from the Airflow config #74041).
  • TS SDK: add triggerDagRun to the native Dag surface #73445 is at its new revision, where the TypeScript runtime runs the triggerDagRun task.
• Please review on the original PRs, not here.
• Conflicts resolved:
  • ts-sdk/src/coordinator/runtime.ts, in "TS SDK: add triggerDagRun to the native Dag surface": the imports keep bundleDags and finalizeDag from TS SDK: answer the Dag-parsing request from bundle.serve #73442 as merged, and add getBundleTrigger.
  • ts-sdk/src/coordinator/serde.ts, in the same commit: its new serializeDagDependencies and TRIGGER_DAG_RUN_FIELDS are kept as written, and the same holds for context-only conflicts with the label variable from TS SDK: serialize a native Dag to Dag JSON #73441 in TS SDK: add conditional branching with dag.if #73443 and TS SDK: add triggerDagRun to the native Dag surface #73445. The DAG_CONFIG_FALLBACKS block they sat next to is gone, since TS SDK: serialize a native Dag to Dag JSON #73441 leaves those Dag settings for Airflow to fill (Parse native Lang-SDK Dags in the Dag processor with their runtime #74035).

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Was generative AI tooling used to co-author this PR?

• Yes, with help of Claude Code Opus 5.5 following the guidelines

[jason810496]

Closing: this mirror's own commits (TS SDK conditional branching, multi-way branching, and triggerDagRun) are now redundant. They have merged into main directly as #74069, #74070 and #74071. #73846 and #73847 have been rebuilt directly on main, dropping this layer.