Adding example configs.

app-configs/rinoa/dagu/dags/.examples-created

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+# This file indicates that example DAGs have been created.
+# Delete this file to re-create examples on next startup.

app-configs/rinoa/dagu/dags/example-01-basic-sequential.yaml

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+# Basic Sequential Execution
+# Steps execute one after another in order
+
+description: Execute steps one after another
+
+steps:
+  - command: echo "Step 1 - Starting workflow"
+    
+  - command: echo "Step 2 - Processing data"
+    
+  - command: echo "Step 3 - Workflow complete"

app-configs/rinoa/dagu/dags/example-02-parallel-execution.yaml

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+# Parallel Execution
+# Run multiple tasks simultaneously
+
+description: Execute multiple tasks in parallel
+
+steps:
+  - name: setup
+    command: echo "Setting up environment"
+    
+  # These steps run in parallel after setup
+  - name: task-a
+    command: |
+      echo "Task A starting"
+      sleep 2
+      echo "Task A complete"
+    depends:
+      - setup
+    
+  - name: task-b
+    command: |
+      echo "Task B starting"
+      sleep 2
+      echo "Task B complete"
+    depends:
+      - setup
+    
+  - name: task-c
+    command: |
+      echo "Task C starting"
+      sleep 2
+      echo "Task C complete"
+    depends:
+      - setup
+    
+  # Wait for all parallel tasks to complete
+  - name: merge-results
+    command: echo "All parallel tasks completed"
+    depends:
+      - task-a
+      - task-b
+      - task-c

app-configs/rinoa/dagu/dags/example-03-scheduling.yaml

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+# Scheduled Workflows
+# Run workflows automatically on a schedule
+
+description: Example of a scheduled workflow
+# Uncomment to run daily at 2:00 AM
+# schedule: "0 2 * * *"
+
+# Schedule examples:
+#   "0 * * * *"      - Every hour
+#   "*/5 * * * *"    - Every 5 minutes
+#   "0 9 * * 1-5"    - Weekdays at 9 AM
+#   "0 0 1 * *"      - First day of each month
+
+histRetentionDays: 7  # Keep 7 days of history
+
+steps:
+  - command: |
+      echo "Running scheduled task"
+      echo "Current time: $(date)"
+      
+  - command: echo "Cleaning up old data"

app-configs/rinoa/dagu/dags/example-04-nested-workflows.yaml

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+# Nested Workflows
+# Call other workflows as sub-workflows
+
+description: Example of nested workflows
+
+steps:
+  - command: echo "Preparing data for sub-workflows"
+    
+  - run: sub-workflow
+    params: "TASK_ID=123"
+    
+  - command: echo "Main workflow completed"
+
+---
+# Sub-workflow definition
+name: sub-workflow
+description: Sub-workflow that gets called by main
+params:
+  - TASK_ID: "000"
+  
+steps:
+  - command: echo "Sub-workflow executing with TASK_ID=${TASK_ID}"
+    
+  - command: echo "Sub-workflow step 2"

app-configs/rinoa/dagu/dags/example-05-container-workflow.yaml

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+# Container-based Workflow
+# Using a container for all steps
+
+description: Run workflow steps in a Python container
+
+container:
+  image: python:3.13
+  volumes:
+    - /tmp/data:/data
+
+steps:
+  - # write data to a file
+    command: |
+      python -c "with open('/data/output.txt', 'w') as f: f.write('Hello from Dagu!')"
+
+  - # read data from the file
+    command: |
+      python -c "with open('/data/output.txt') as f: print(f.read())"