Add dual licensing and JOSS submission materials

- Add LICENSE-HARDWARE (CERN-OHL-P v2) for hardware designs
- Update README with dual licensing explanation
- Create hardware/README.md with CERN-OHL-P details
- Create paper.md for JOSS submission with full academic paper
- Create paper.bib with academic references
- Update CITATION.cff to include both licenses
- Create docs/JOSS_SUBMISSION.md guide for journal submission

Software remains MIT licensed, hardware now properly licensed under
CERN Open Hardware License for open source hardware compliance.

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

Author: MissCrispenCakes

CITATION.cff

@@ -33,6 +33,9 @@ keywords:
   - AR
   - human-computer interaction
   - open hardware
-license: MIT
+license:
+  - MIT
+  - CERN-OHL-P-2.0
+license-url: 'https://github.com/MissCrispenCakes/On-body-haptics#license'
 version: 2.0.0
 date-released: '2024-01-25'

LICENSE-HARDWARE

@@ -0,0 +1,181 @@
+CERN Open Hardware Licence Version 2 - Permissive
+
+Preamble
+
+CERN has developed this licence to promote collaboration among
+hardware designers and to provide a legal tool which supports the
+freedom to use, study, modify, share and distribute hardware designs
+and products based on those designs. Version 2 of the CERN Open
+Hardware Licence comes in three variants: CERN-OHL-P (permissive); and
+two reciprocal licences: CERN-OHL-W (weakly reciprocal) and this
+licence, CERN-OHL-S (strongly reciprocal).
+
+The CERN-OHL-P is copyright CERN 2020. Anyone is welcome to use it, in
+unmodified form only.
+
+Use of this Licence does not imply any endorsement by CERN of any
+Licensor or their designs nor does it imply any involvement by CERN in
+their development.
+
+1 Definitions
+
+  1.1 'Licence' means this CERN-OHL-P.
+
+  1.2 'Source' means information such as design materials or digital
+      code which can be applied to Make or test a Product or to
+      prepare a Product for use, Conveyance or sale, regardless of its
+      medium or how it is expressed. It may include Notices.
+
+  1.3 'Covered Source' means Source that is explicitly made available
+      under this Licence.
+
+  1.4 'Product' means any device, component, work or physical object,
+      whether in finished or intermediate form, arising from the use,
+      application or processing of Covered Source.
+
+  1.5 'Make' means to create or configure something, whether by
+      manufacture, assembly, compiling, loading or applying Covered
+      Source or another Product or otherwise.
+
+  1.6 'Notice' means copyright, acknowledgement and trademark notices,
+      references to the location of any Notices, modification notices
+      (subsection 3.3(b)) and all notices that refer to this Licence
+      and to the disclaimer of warranties that are included in the
+      Covered Source.
+
+  1.7 'Licensee' or 'You' means any person exercising rights under
+      this Licence.
+
+  1.8 'Licensor' means a person who creates Source or modifies Covered
+      Source and subsequently Conveys the resulting Covered Source
+      under the terms and conditions of this Licence. A person may be a
+      Licensee and a Licensor at the same time.
+
+  1.9 'Convey' means to communicate to the public or distribute.
+
+
+2 Applicability
+
+  2.1 This Licence governs the use, copying, modification, Conveying
+      of Covered Source and Products, and the Making of Products. By
+      exercising any right granted under this Licence, You irrevocably
+      accept these terms and conditions.
+
+  2.2 This Licence is granted by the Licensor directly to You, and
+      shall apply worldwide and without limitation in time.
+
+  2.3 You shall not attempt to restrict by contract or otherwise the
+      rights granted under this Licence to other Licensees.
+
+  2.4 This Licence is not intended to restrict fair use, fair dealing,
+      or any other similar right.
+
+
+3 Copying, Modifying and Conveying Covered Source
+
+  3.1 You may copy and Convey verbatim copies of Covered Source, in
+      any medium, provided You retain all Notices.
+
+  3.2 You may modify Covered Source, other than Notices.
+
+      You may only delete Notices if they are no longer applicable to
+      the corresponding Covered Source as modified by You and You may
+      add additional Notices applicable to Your modifications.
+
+  3.3 You may Convey modified Covered Source (with the effect that You
+      shall also become a Licensor) provided that You:
+
+       a) retain Notices as required in subsection 3.2; and
+
+       b) add a Notice to the modified Covered Source stating that You
+          have modified it, with the date and brief description of how
+          You have modified it.
+
+  3.4 You may Convey Covered Source or modified Covered Source under
+      licence terms which differ from the terms of this Licence
+      provided that You:
+
+       a) comply at all times with subsection 3.3; and
+
+       b) provide a copy of this Licence to anyone to whom You
+          Convey Covered Source or modified Covered Source.
+
+
+4 Making and Conveying Products
+
+You may Make Products, and/or Convey them, provided that You ensure
+that the recipient of the Product has access to any Notices applicable
+to the Product.
+
+
+5 DISCLAIMER AND LIABILITY
+
+  5.1 DISCLAIMER OF WARRANTY -- The Covered Source and any Products
+      are provided 'as is' and any express or implied warranties,
+      including, but not limited to, implied warranties of
+      merchantability, of satisfactory quality, non-infringement of
+      third party rights, and fitness for a particular purpose or use
+      are disclaimed in respect of any Source or Product to the
+      maximum extent permitted by law. The Licensor makes no
+      representation that any Source or Product does not or will not
+      infringe any patent, copyright, trade secret or other
+      proprietary right. The entire risk as to the use, quality, and
+      performance of any Source or Product shall be with You and not
+      the Licensor. This disclaimer of warranty is an essential part
+      of this Licence and a condition for the grant of any rights
+      granted under this Licence.
+
+  5.2 EXCLUSION AND LIMITATION OF LIABILITY -- The Licensor shall, to
+      the maximum extent permitted by law, have no liability for
+      direct, indirect, special, incidental, consequential, exemplary,
+      punitive or other damages of any character including, without
+      limitation, procurement of substitute goods or services, loss of
+      use, data or profits, or business interruption, however caused
+      and on any theory of contract, warranty, tort (including
+      negligence), product liability or otherwise, arising in any way
+      in relation to the Covered Source, modified Covered Source
+      and/or the Making or Conveyance of a Product, even if advised of
+      the possibility of such damages, and You shall hold the
+      Licensor(s) free and harmless from any liability, costs,
+      damages, fees and expenses, including claims by third parties,
+      in relation to such use.
+
+
+6 Patents
+
+  6.1 Subject to the terms and conditions of this Licence, each
+      Licensor hereby grants to You a perpetual, worldwide,
+      non-exclusive, no-charge, royalty-free, irrevocable (except as
+      stated in this section 6, or where terminated by the Licensor
+      for cause) patent license to Make, have Made, use, offer to
+      sell, sell, import, and otherwise transfer the Covered Source
+      and Products, where such licence applies only to those patent
+      claims licensable by such Licensor that are necessarily
+      infringed by exercising rights under the Covered Source as
+      Conveyed by that Licensor.
+
+  6.2 If You institute patent litigation against any entity (including
+      a cross-claim or counterclaim in a lawsuit) alleging that the
+      Covered Source or a Product constitutes direct or contributory
+      patent infringement, or You seek any declaration that a patent
+      licensed to You under this Licence is invalid or unenforceable
+      then any rights granted to You under this Licence shall
+      terminate as of the date such process is initiated.
+
+
+================================================================================
+
+This hardware is licensed under CERN-OHL-P v2.
+
+You may redistribute and modify this hardware and make products
+using it under the terms of the CERN-OHL-P v2 (https://ohwr.org/cern_ohl_p_v2.txt).
+
+This hardware is distributed WITHOUT ANY EXPRESS OR IMPLIED WARRANTY,
+INCLUDING OF MERCHANTABILITY, SATISFACTORY QUALITY AND FITNESS FOR A
+PARTICULAR PURPOSE. Please see the CERN-OHL-P v2 for applicable conditions.
+
+Source location: https://github.com/MissCrispenCakes/On-body-haptics
+
+As per CERN-OHL-P v2 section 4, should You produce hardware based on
+this design, You must maintain the Source Location visible in the
+documentation for the Product or on the Product itself.

README.md

@@ -198,7 +198,19 @@ pip install -r requirements.txt
 
 ## 📄 License
 
-This project is licensed under the MIT License - see the [LICENSE](LICENSE) file for details.
+This project uses **dual licensing** to cover both software and hardware:
+
+### Software License
+**MIT License** - All software, firmware, and code are licensed under the MIT License.
+- See [LICENSE](LICENSE) for details
+- Includes: Arduino firmware, Python code, Node.js server, test scripts
+
+### Hardware License
+**CERN-OHL-P v2** (CERN Open Hardware License - Permissive) - All hardware designs are licensed under CERN-OHL-P v2.
+- See [LICENSE-HARDWARE](LICENSE-HARDWARE) for details
+- Includes: PCB designs (KiCad), Gerber files, 3D enclosures (STL/OpenSCAD), schematics, BOM
+
+This ensures both software and hardware freedom while using licenses designed for their respective domains.
 
 ## 🙏 Acknowledgments