lightflow-text-regex

# LightFlow Text Regex Use `lightflow.text_regex` to run deterministic regex matching or replacement in a workflow. ## Workflow - Workflow id: `lightflow.text_regex` - Runtime ownership: the workflow crate owns `execute()` and exposes it through the `lightflow-text-regex-runner` package binary. - Host engine: `package.command.v1`; the runner is declared in `[package.metadata.lightflow]` and is started only by an explicit run. - Input `text`: required source text; widget `textarea`. - Input `pattern`: required Rust regex pattern. - Input `replacement`: optional replacement text. When omitted, output `text` is the original input. - Outputs: `text`, `matched`, `match_count`, `captures`, `first_match`. ## Usage ```bash lfw run lightflow.text_regex -i text='cat 42' -i pattern='(\d+)' -i replacement='id:$1' lfw plan lightflow.text_regex lfw trace last lfw replay ``` ## API Usage Start `lfw serve`, then call the workflow through the shared HTTP run contract. Adjust `inputs` to match the workflow contract above. ```bash curl -sS -X POST http://127.0.0.1:5174/workflows/lightflow.text_regex/run \ -H 'content-type: application/json' \ -d '{"inputs":{"text":"cat 42","pattern":"(\\d+)","replacement":"id:$1"}}' ```