pre-print page and pdf link added

Author: prathameshnium

README.md

@@ -369,6 +369,8 @@ The project's earlier history and foundational development are outlined below:
 * **Instrument Manuals:** A list of instrument manuals is available in [docs/Instruments_Manuals_Lists.md](docs/Instruments_Manuals_Lists.md).
 * **GitLab Backup:** This project is manually backed up weekly to a [GitLab repository](https://gitlab.com/prathameshnium/pica-python-instrument-control-and-automation).
 * **Project Web Page:** [https://prathameshdeshmukh.site/pages/project-pica.html](https://prathameshdeshmukh.site/pages/project-pica.html).
+* **Preprint:** Access the full preprint and related materials at [https://prathameshnium.github.io/PICA-Python-Instrument-Control-and-Automation/publications/](https://prathameshnium.github.io/PICA-Python-Instrument-Control-and-Automation/publications/) or download the [PDF directly](https://prathameshnium.github.io/PICA-Python-Instrument-Control-and-Automation/publications/pica-paper.pdf).
+
 
 ---
 

docs/User_Manual.md

@@ -27,6 +27,7 @@
 8. [Common Issues & Troubleshooting](#8-common-issues--troubleshooting)
 9. [Technical Reference](#9-technical-reference)
 10. [Citation & Open Source](#10-citation--open-source)
+   * [Preprint](#101-preprint)
 11. [Future Development](#11-future-development)
 12. [Adding a New Instrument](#12-adding-a-new-instrument)
 13. [Authors & Acknowledgments](#13-authors--acknowledgments)
@@ -533,6 +534,16 @@ Most other data files generated by PICA follow a similar structure.
 **Collaborative Ecosystem:**
 PICA is open-source ([MIT License](https://github.com/prathameshnium/PICA-Python-Instrument-Control-and-Automation/blob/main/LICENSE)) to foster transparency. By providing the source code, the measurement protocols become auditable, ensuring that experimental conditions are reproducible and not hidden behind a proprietary "black box." We encourage other research groups to adapt these scripts for their specific hardware configurations.
 
+For the full preprint, please refer to the [Preprint section](#101-preprint).
+
+### 10.1 Preprint
+
+The full preprint of the PICA software suite, detailing its design, implementation, and applications, is available for review.
+
+*   **Preprint Page:** [https://prathameshnium.github.io/PICA-Python-Instrument-Control-and-Automation/publications/](https://prathameshnium.github.io/PICA-Python-Instrument-Control-and-Automation/publications/)
+*   **Direct PDF Download:** [https://prathameshnium.github.io/PICA-Python-Instrument-Control-and-Automation/publications/pica-paper.pdf](https://prathameshnium.github.io/PICA-Python-Instrument-Control-and-Automation/publications/pica-paper.pdf)
+
+
 **Citation:**
 
 ```bibtex