Add LLM-readiness documentation (#1)

Author: reblocke

AGENTS.md

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+# AGENTS
+
+## Project Purpose
+Central sleep apnea data analysis at U of U sleep-wake center
+
+## Public and Data-Safety Rules
+- Treat this repository as public. Do not add PHI, restricted datasets, credentials, private drafts, or publisher-formatted article text.
+- Clinical sleep-center data likely restricted; verify no PHI
+- Manuscript status: Superseded or overlaps with CSA-CPAP-Prescribing; accepted draft candidates exist locally
+
+## How to Orient Quickly
+- Start with `README.md` for project scope, workflow, data notes, citation, and license information.
+- Use `CITATION.cff` for structured citation metadata when present.
+- Inspect scripts/notebooks before running them; do not assume generated outputs are current.
+
+## Workflow
+From the repository root, use this as the initial run guidance:
+
+```bash
+Review Python workflow
+```
+
+If the command is a placeholder, refine it after reading the local scripts and existing README.
+
+## Verification Before Publishing Changes
+- Run `git diff --check`.
+- Validate `CITATION.cff` as YAML after citation edits.
+- Do not commit generated outputs, logs, caches, virtual environments, `.DS_Store`, or checkpoint files unless intentionally released.
+- For clinical or collaborator data, confirm that no row-level restricted data or identifiers are included.

LICENSE

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+MIT License
+
+Copyright (c) 2026 Brian W. Locke
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.

README.md

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+# Central Sleep Apnea Data Analysis
+
+Central sleep apnea data analysis at U of U sleep-wake center
+
+## LLM and Repository Readiness Notes
+
+### Description
+Central sleep apnea data analysis at U of U sleep-wake center
+
+### Instructions
+Start with this README, then inspect the files listed under Repository Layout. For computational workflows, run commands from the repository root and avoid committing generated outputs unless a release explicitly calls for them.
+
+### Authors, Funding, and Acknowledgments
+Maintainer: Brian W. Locke (`@reblocke`, ORCID 0000-0002-3588-5238). Preserve any project-specific author, funding, and acknowledgment details already listed elsewhere in the repository or accompanying publication.
+
+### Repository Layout
+- `DataAnalysis.py`
+- `Diag Test by Etiology.png`
+- `Diag Test by percentage CSA.png`
+- `Display Dist Age.png`
+- `Etio by percentage CSA no pie no label.png`
+- `Etio by percentage CSA no pie no tick labels.png`
+- `Etio by percentage CSA no pie.png`
+- `Etio by percentage CSA.png`
+
+### Data and Codebook
+Clinical sleep-center data likely restricted; verify no PHI
+
+### Workflow / Script Order
+Review Python workflow
+
+### Dependencies / Environment
+Repo scripts
+
+### Citation
+No publication DOI is assigned to this repository. Cite the GitHub repository URL and the commit or release used.
+
+### License
+MIT License for repository code; see `LICENSE`. Third-party data, publisher text, and restricted clinical data are excluded.
+
+### Manuscript Status
+Superseded or overlaps with CSA-CPAP-Prescribing; accepted draft candidates exist locally Do not add manuscript text until repo relationship and publisher policy are checked
+
+### Contact
+Maintainer: Brian W. Locke (`@reblocke`). Use GitHub issues or pull requests for repository-specific questions when the repository is public.