chore(main): release 4.0.0

[CoreySpohn]

🤖 I have created a release beep boop

4.0.0 (2026-07-20)

⚠ BREAKING CHANGES

• simulation: rates render at detector sampling via the sampling-explicit coronagraph contract -- the detector grid is the only grid; speckle plane decoupled from the coronagraph plate scale

Features

• loaders: pass load_disk through to skyscapes; rewrite README quick start for the rate/readout API (7ce6676)
• simulation: rates render at detector sampling via the sampling-explicit coronagraph contract -- the detector grid is the only grid; speckle plane decoupled from the coronagraph plate scale (41d6f73)
• speckle: add speckle_rate/readout and system wiring (1e5bfcb)
• speckle: speckle_rate asserts the speckle/coronagraph plate-scale equality (was docstring-only) -- adversarial-review hardening (14462a4)

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[CoreySpohn]

🤖 Created releases:

• v4.0.0

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