Complete rewrite and re-architecture Osmedeus Engine in v5

test/testdata/workflows/nested/nested-module-1.yaml

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+kind: module
+name: nested-module-1
+description: First nested module for testing param and target sharing
+
+params:
+  - name: paramFromFlowFile
+    default: "not-set"
+
+  - name: anotherParam1
+    default: "{{Output}}/another1-{{TargetSpace}}.txt"
+
+
+steps:
+  - name: echo-target-and-param
+    type: bash
+    command: |
+      echo "Module 1: Target={{Target}}" >> {{anotherParam1}}
+      echo "Module 1: paramFromFlowFile={{paramFromFlowFile}}" >> {{anotherParam1}}
+    exports:
+      module1_completed: "true"
+
+  - name: echo-target-and-param
+    type: bash
+    command: |
+      echo "Module 1: Target={{Target}}" >> {{anotherParam1}}
+    exports:
+      module1_with_target: "module1-{{Target}}"

test/testdata/workflows/nested/nested-module-2.yaml

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+kind: module
+name: nested-module-2
+description: Second nested module for testing export propagation and param inheritance
+
+params:
+  - name: paramFromFlowFile
+    default: "not-set"
+
+  - name: anotherParam2
+    default: "{{Output}}/another2-{{Workspace}}.txt"
+
+  - name: anotherParam3as1
+    default: "{{Output}}/another1-{{TargetSpace}}.txt"
+
+
+steps:
+  - name: verify-exports-and-params
+    type: bash
+    command: |
+      echo "Module 2: Target={{Target}}"
+      echo "Module 2: module1_with_target={{module1_with_target}}"
+      echo "Module 2: paramFromFlowFile={{paramFromFlowFile}}"
+      echo "Module 2: module1_completed={{module1_completed}}"
+
+  - name: verify-exports-and-params
+    type: bash
+    pre_condition: 'fileExists("{{anotherParam3as1}}")'
+    command: |
+      echo "Module 2: paramFromFlowFile={{paramFromFlowFile}}"
+      echo "Module 2: module1_completed={{module1_completed}}"
+      echo "Module 2: anotherParam3as1={{anotherParam3as1}}"
+    

test/testdata/workflows/nested/template-foreach-module.yaml

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+kind: module
+name: template-foreach-module
+description: Test template rendering in foreach steps
+
+params:
+  - name: inputFile
+    default: "{{Output}}/items-{{TargetSpace}}.txt"
+  - name: outputDir
+    default: "{{Output}}/processed-{{TargetSpace}}"
+
+steps:
+  # Create test input file
+  - name: create-input
+    type: bash
+    command: |
+      mkdir -p {{outputDir}}
+      echo -e "item1\nitem2\nitem3" > {{inputFile}}
+    exports:
+      input_ready: "true"
+
+  # Foreach with templated input path
+  - name: foreach-with-templates
+    type: foreach
+    pre_condition: 'fileExists("{{inputFile}}")'
+    input: "{{inputFile}}"
+    variable: item
+    threads: 2
+    step:
+      name: process-item
+      type: bash
+      command: |
+        echo "Processing [[item]] for {{Target}}" >> {{outputDir}}/[[item]].txt
+
+  # Verify results
+  - name: verify-foreach
+    type: bash
+    pre_condition: 'fileExists("{{outputDir}}/item1.txt")'
+    command: |
+      echo "=== Foreach Verification ==="
+      echo "Foreach completed for {{Target}}"
+      echo "inputFile={{inputFile}}"
+      echo "outputDir={{outputDir}}"
+      echo "=== Output Directory ==="
+      ls -la {{outputDir}}/
+      echo "=== Item1 Contents ==="
+      cat {{outputDir}}/item1.txt
+    exports:
+      foreach_verified: "true"

test/testdata/workflows/nested/template-parallel-module.yaml

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+kind: module
+name: template-parallel-module
+description: Test template rendering in parallel-steps
+
+params:
+  - name: parallelOutput
+    default: "{{Output}}/parallel-{{TargetSpace}}"
+
+steps:
+  - name: setup-parallel
+    type: bash
+    command: mkdir -p {{parallelOutput}}
+    exports:
+      parallel_dir: "{{parallelOutput}}"
+
+  - name: parallel-steps-with-templates
+    type: parallel-steps
+    parallel_steps:
+      - name: parallel-bash-1
+        type: bash
+        command: 'echo "Bash 1: {{Target}}" > {{parallelOutput}}/bash1.txt'
+        exports:
+          p1_done: "true"
+
+      - name: parallel-bash-2
+        type: bash
+        command: 'echo "Bash 2: {{TargetSpace}}" > {{parallelOutput}}/bash2.txt'
+        exports:
+          p2_done: "true"
+
+      - name: parallel-function
+        type: function
+        function: 'log_info("Parallel function for {{Target}}")'
+        exports:
+          p3_done: "true"
+
+  - name: verify-parallel
+    type: bash
+    pre_condition: 'fileExists("{{parallelOutput}}/bash1.txt")'
+    command: |
+      echo "=== Parallel Steps Verification ==="
+      echo "parallel_dir={{parallel_dir}}"
+      echo "p1_done={{p1_done}}"
+      echo "p2_done={{p2_done}}"
+      echo "p3_done={{p3_done}}"
+      echo "=== Bash1 Contents ==="
+      cat {{parallelOutput}}/bash1.txt
+      echo "=== Bash2 Contents ==="
+      cat {{parallelOutput}}/bash2.txt
+    exports:
+      all_parallel_done: "{{p1_done}}-{{p2_done}}-{{p3_done}}"

test/testdata/workflows/nested/template-rendering-flow.yaml

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+kind: flow
+name: template-rendering-flow
+description: Flow to test template rendering across all step types and fields
+tags: test,template,rendering
+
+params:
+  - name: flowParam
+    default: "flow-{{Target}}"
+
+dependencies:
+  variables:
+    - name: Target
+      type: domain
+      required: true
+
+modules:
+  - name: basic-rendering
+    path: nested/template-rendering-module.yaml
+    params:
+      customPrefix: "{{flowParam}}-custom"
+
+  - name: foreach-rendering
+    path: nested/template-foreach-module.yaml
+    depends_on:
+      - basic-rendering
+
+  - name: parallel-rendering
+    path: nested/template-parallel-module.yaml
+    depends_on:
+      - foreach-rendering

test/testdata/workflows/nested/template-rendering-module.yaml

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+kind: module
+name: template-rendering-module
+description: Test template rendering in all step fields
+
+params:
+  - name: customPath
+    default: "{{Output}}/custom-{{TargetSpace}}.txt"
+  - name: customPrefix
+    default: "prefix-{{Target}}"
+  - name: customTimeout
+    default: "30"
+
+steps:
+  # 1. Bash step with all templated fields
+  - name: bash-with-templates
+    type: bash
+    pre_condition: 'true'
+    command: |
+      echo "Target: {{Target}}" > {{customPath}}
+      echo "Prefix: {{customPrefix}}" >> {{customPath}}
+    log: "Executing bash with target {{Target}}"
+    exports:
+      bash_output_path: "{{customPath}}"
+      bash_target: "{{Target}}"
+
+  # 2. Function step with templated function calls
+  - name: function-with-templates
+    type: function
+    pre_condition: 'fileExists("{{bash_output_path}}")'
+    function: 'log_info("Processing {{Target}} with path {{customPath}}")'
+    exports:
+      function_result: "processed-{{Target}}"
+
+  # 3. Parallel commands with templates
+  - name: parallel-with-templates
+    type: bash
+    parallel_commands:
+      - 'echo "Parallel 1: {{Target}}" >> {{customPath}}'
+      - 'echo "Parallel 2: {{customPrefix}}" >> {{customPath}}'
+    exports:
+      parallel_done: "true"
+
+  # 4. Step with structured args using templates
+  - name: structured-args-step
+    type: bash
+    command: cat {{customPath}}
+    exports:
+      structured_output: "{{Output}}/combined-{{TargetSpace}}.txt"
+
+  # 5. Final verification step
+  - name: verify-all-templates
+    type: bash
+    pre_condition: 'fileExists("{{customPath}}")'
+    command: |
+      echo "=== Template Rendering Verification ==="
+      echo "bash_output_path={{bash_output_path}}"
+      echo "bash_target={{bash_target}}"
+      echo "function_result={{function_result}}"
+      echo "parallel_done={{parallel_done}}"
+      echo "structured_output={{structured_output}}"
+      echo "=== File Contents ==="
+      cat {{customPath}}
+    exports:
+      all_verified: "true"

test/testdata/workflows/nested/testing-nested-flow.yaml

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+kind: flow
+name: testing-nested-flow
+description: Test flow for nested workflow execution with param and target sharing
+tags: test,nested
+
+params:
+  - name: paramFromFlowFile
+    default: "flow-value"
+
+dependencies:
+  variables:
+    - name: Target
+      type: domain
+      required: true
+
+modules:
+  - name: nested-module-one
+    path: nested/nested-module-1.yaml
+
+  - name: nested-module-two
+    path: nested/nested-module-2.yaml
+    depends_on:
+      - nested-module-one