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FN-5767: wire workflow graph executor to legacy seams

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Complete Phase 3 interpreter parity by routing workflow graph execution through legacy seam handlers.

- Simplify workflow IR schema and built-in coding workflow to seam-based v1 nodes/edges.
- Add workflow node handler layer with default legacy seam adapters and dedicated handler/parity tests.
- Update engine exports/executor behavior for conditional traversal, retries, outcome context, and parity assertions.
- Refresh core workflow IR tests/coverage for the new shape (including seam-stage expectations without triage) and remove obsolete schema fixture test.

Files changed:
 .changeset/fn-5767-interpreter-parity.md           |   5 +
 .github/actions/setup-node-pnpm/action.yml         |  41 +---
 docs/workflow-steps.md                             |  17 ++
 .../__tests__/builtin-coding-workflow-ir.test.ts   |  25 +--
 packages/core/src/__tests__/workflow-ir.test.ts    |  70 ------
 packages/core/src/builtin-coding-workflow-ir.ts    |  71 ++----
 packages/core/src/index.ts                         |  31 +--
 packages/core/src/workflow-ir-types.ts             |  91 +-------
 packages/core/src/workflow-ir.ts                   | 246 ++-------------------
 .../workflow-graph-executor-handlers.test.ts       | 201 +++++++++++++++++
 .../workflow-graph-executor-parity.test.ts         | 126 ++++++++---
 .../src/__tests__/workflow-node-handlers.test.ts   |  50 +++++
 packages/engine/src/index.ts                       |  16 +-
 packages/engine/src/workflow-graph-executor.ts     | 205 ++++++++++++-----
 packages/engine/src/workflow-node-handlers.ts      |  56 +++++
 15 files changed, 661 insertions(+), 590 deletions(-)

Fusion-Task-Id: FN-5767

Fusion-Task-Lineage: 0c68586e-2709-4521-a2ce-938ba1006ae0
This commit is contained in:
gsxdsm
2026-05-31 05:56:20 -07:00
parent 1edbb54fce
commit ba81d1f0ac
15 changed files with 672 additions and 601 deletions
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.changeset/fn-5767-interpreter-parity.md Normal file
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"@runfusion/fusion": minor
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Add workflow graph interpreter node handlers and traversal semantics behind the default-off `workflowGraphExecutor` experimental flag. The interpreter now supports prompt/script/gate dispatch through legacy seam DI, edge-condition routing (`success`/`failure`/`outcome:<value>`), bounded retries, and parity-oriented tests for no-op flag behavior and lifecycle routing.