Yes chef. Right away chef. Add doohickey interface

[ldbld]

Yes chef. Right away chef.

Fixes #1909.

Summary

• Add DoohickeyInterface for registering, listing, connecting, sending to, and disconnecting doohickeys, gizmos, and whatsits.
• Add a deterministic in-memory adapter plus explicit errors for duplicate, unknown, unsupported, and disconnected devices.
• Document the interface and add unit coverage for all supported device families.

Validation

• python -m unittest src.tests.test_doohickey_interface

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[drewcassidy]

Can you add thingamabobs? Management says thingamabobs are the future

[sneakers-the-rat]

Thank you for the contribution. please ensure proper testing and complete coverage of all doohickular operations with specific methods for each of the canonical things that people do with them, rather than generic methods - as-is, this would be a serious risk to product as I already fried one on my desk trying to run this, we can't ship something that will damage our customers hardware.

[sneakers-the-rat]

PR description says full support for gizmos and whatsits, but typechecking fails against this for gizmos and whatsits. please expand protocol support and add pyright and mypy tests to ensure real doohickeys et al. in the wild type check correctly against the protocol class

[sneakers-the-rat]

what is a device? I don't recall seeing "device" anywhere in the spec

[sneakers-the-rat]

This bricked my benchtop test doohickey rig. need to ensure proper bounds checking and state synchronization with carefully mocked doohickies in the test suite, the generic "send" and "connect" methods need to be replaced with specific doohickular operations - we're building a doohickey interface, not a generic doohickey abstraction layer.