Update project documentation to reflect the newly introduced Pipe
architecture and improve overall clarity regarding workflow orchestration.
- `README.md`: Add a new "Optional: Pipe Integration" section explaining
when to use the pipe system, emphasizing its role in managing complex,
multi-stage workflows with deferred execution. Clarify the distinction
and compatibility boundaries between standard and pipe nodes.
- `README.md`: Document the `%counter<padding>` filename template variable.
- `CLAUDE.md`: Update the core architecture map to include `nodes_pipe.py`
and list the new configuration, modification, and terminal nodes.
- `examples/`: Introduce a dedicated examples directory. Move the standard
`example-workflow.json` into this folder and add the new
`image_saver_pipe_workflow.json` to demonstrate advanced orchestration.
- `examples/README.md`: Add a descriptive index detailing the differences
between the standard workflow and the advanced pipe orchestration example.
