[arnaud-moncel]

Definition of Done

Fixes PRD-1171

General

• Write an explicit title for the Pull Request, following Conventional Commits specification
• Test manually the implemented changes
• Validate the code quality (indentation, syntax, style, simplicity, readability)

Security

• Consider the security impact of the changes made

Note

[!NOTE]

Add nested And/Or condition groups to workflow gateway condition steps

• Condition step definitions now accept recursively nested And/Or groups of conditions, validated by a new recursive Zod schema in step-definition.ts. Empty groups fail validation.
• ConditionStepExecutor evaluates each option's conditions as a root group with recursive group evaluation, and condition traces now include nested group results (condition-step-executor.ts).
• The agent capabilities response reports a new nested-condition-tree capability (capabilities.ts).
• ConditionTreeParser rejects empty nested condition groups while keeping an empty root group valid, and fixes null-handling in its isLeaf/isBranch type guards (condition-tree-parser.ts).
• FilterGenerator.computeMatch now handles empty branches: an empty Or matches no records and an empty And imposes no restriction, instead of emitting empty MongoDB logical-operator arrays (filter.ts).
• Risk: option conditions changed from a flat leaf-only array to recursive nodes in server-types.ts; consumers of the server condition type and of ConditionResult must handle the new recursive shape.

^{Macroscope summarized bf29fb2.}

[qltysh]

Coverage Impact

This PR will not change total coverage.

Modified Files with Diff Coverage (2)

Rating	File	% Diff	Uncovered Line #s
	...ges/workflow-executor/src/executors/condition-step-executor.ts	100.0%
	packages/workflow-executor/src/types/validated/step-definition.ts	100.0%
	Total	100.0%

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[qltysh]

All good ✅

[linear-code]

PRD-1171