David Gwilliam 406a58d292 feat(graph): Add TOML-based graph configuration loader ...

Allow pipelines to be defined in TOML format with intuitive
node-and-connection syntax that's easy to read and edit.

- Add graph_toml.py with TOML parsing using tomllib
- Support simple format: "source": "headlines"
- Support full format: {"type": "camera", "mode": "scroll"}
- Parse connection strings in "A -> B -> C" chain format
- Add example pipeline_graph.toml demonstrating usage

Example TOML:
[nodes.source]
type = "source"
source = "headlines"

[nodes.camera]
type = "camera"
mode = "scroll"

[connections]
list = ["source -> camera -> display"]

2026-03-21 19:26:39 -07:00

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