docs: add CRM citation metadata

Author: Lukas Geiger

CITATION.cff

@@ -0,0 +1,24 @@
+cff-version: 1.2.0
+message: "If you use this research code or paper series, please cite the Zenodo record and include the accessed commit."
+type: software
+title: "The Curvature Relaxation Model: A Four-Paper Program for Geometric Cosmology Without the Dark Sector"
+authors:
+  - family-names: Geiger
+    given-names: Lukas
+    orcid: "https://orcid.org/0009-0005-7296-1534"
+version: "7.0"
+date-released: "2026-03-26"
+license: CC-BY-4.0
+doi: 10.5281/zenodo.19233559
+url: "https://github.com/research-line/crm-cosmology"
+repository-code: "https://github.com/research-line/crm-cosmology"
+abstract: "Research code, papers, result tables, and figures for the Curvature Relaxation Model (CRM), a preprint-stage modified-gravity cosmology program."
+keywords:
+  - cosmology
+  - modified-gravity
+  - f(R) gravity
+  - MOND
+  - CMB
+  - Pantheon+
+  - SPARC
+  - research-code

README.md

@@ -219,7 +219,10 @@ This work uses the following open-source software:
 
 ## Citation
 
-If you use this work, please cite the Zenodo deposit:
+If you use this work, please cite the Zenodo deposit and include the accessed Git commit when referring to the repository code. GitHub can also read the repository-level `CITATION.cff` file for citation export.
+
+- Concept DOI for all CRM I--IV versions: [10.5281/zenodo.18728935](https://doi.org/10.5281/zenodo.18728935)
+- Latest published Zenodo v7.0 record checked for this README: [10.5281/zenodo.19233559](https://doi.org/10.5281/zenodo.19233559)
 
 ```bibtex
 @misc{Geiger2026CRM,
@@ -228,8 +231,9 @@ If you use this work, please cite the Zenodo deposit:
                for Geometric Cosmology Without the Dark Sector},
   year      = {2026},
   publisher = {Zenodo},
-  doi       = {10.5281/zenodo.18728935},
-  url       = {https://doi.org/10.5281/zenodo.18728935}
+  version   = {7.0},
+  doi       = {10.5281/zenodo.19233559},
+  url       = {https://doi.org/10.5281/zenodo.19233559}
 }
 ```
 
@@ -279,7 +283,7 @@ This work is licensed under [CC BY 4.0](https://creativecommons.org/licenses/by/
 
 ## Haftung / Liability
 
-Dieses Projekt ist eine **unentgeltliche Open-Source-Schenkung** im Sinne der §§ 516 ff. BGB. Die Haftung des Urhebers ist gemäß **§ 521 BGB** auf **Vorsatz und grobe Fahrlässigkeit** beschränkt. Ergänzend gelten die Haftungsausschlüsse aus GPL-3.0 / MIT / Apache-2.0 §§ 15–16 (je nach gewählter Lizenz).
+Dieses Projekt ist eine **unentgeltliche Open-Science-Veröffentlichung**. Die Haftung des Urhebers ist gemäß **§ 521 BGB** auf **Vorsatz und grobe Fahrlässigkeit** beschränkt.
 
 Nutzung auf eigenes Risiko. Keine Wartungszusage, keine Verfügbarkeitsgarantie, keine Gewähr für Fehlerfreiheit oder Eignung für einen bestimmten Zweck.
 

llms.txt

@@ -2,6 +2,7 @@
 
 Canonical repository: https://github.com/research-line/crm-cosmology
 Primary DOI concept: https://doi.org/10.5281/zenodo.18728935
+Latest published Zenodo v7.0 record checked in this run: https://doi.org/10.5281/zenodo.19233559
 Latest local status noted in repo docs: open research/preprint repository; latest local paper rebuilds may be newer than the live Zenodo v7 record.
 License: CC BY 4.0
 
@@ -16,6 +17,7 @@ The repository includes:
 - Python scripts for Planck 2018 CMB, Pantheon+, MOND, and SPARC-oriented checks.
 - Figures and result tables used by the paper series.
 - Project review notes and publication strategy documents.
+- `CITATION.cff` with the current GitHub/Zenodo citation metadata.
 
 ## Recommended Reading Order