* Refactor flowchart token handling and enhance merge mode behavior
- Improve token emission, consumption, and scheduling logic.
- Add support for distinct merge modes: None, Converge, Stream, and Race.
- Update `MergeMode` enum documentation to clarify behavior.
- Adjust default merge mode from `Converge` to `None`.
* Add integration tests for implicit join behaviors with None and Converge merge modes
- Added workflows `fork-decision-join-none.json` and `fork-decision-join-converge.json` to test scenarios.
- Implemented `ForkDecisionJoinTests` to validate execution logic based on merge modes.
- Updated project file to include new workflows for testing.
* Refactor `ImplicitJoins` tests to `JoinBehaviors` and add test for `WaitAll` join mode
- Renamed `ImplicitJoins` test namespace and workflows to `JoinBehaviors`.
- Added `fork-decision-join-waitall.json` workflow to test the `WaitAll` merge mode.
- Refactored `ForkDecisionJoinTests` with reusable logic for execution and assertions.
- Updated project file to include the new workflow for testing.
* Refactor flowchart token handling for improved clarity and efficiency
- Simplified token consumption and filtering logic.
- Removed default port fallback for active outbound connections.
- Improved readability and maintainability of token handling in merge mode scenarios.
* Refactor tests and workflows for `JoinBehaviors`
- Transitioned connections to inline object initializers for simplicity.
- Updated workflow paths in `ParallelJoinCompletesTests` and `JoinRunsOnceTests` to match `JoinBehaviors`.
- Adjusted connection definitions in `ImplicitLoopWorkflow` for consistency.
* Format JSON workflow files
* Add ADR for explicit merge modes in flowchart joins
- Introduced `MergeMode` enum with modes: None, Converge, Stream, and Race.
- Documented motivation, decision, and implementation details.
- Updated solution to include new ADR file.
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