Add skill: wgs84-to-j2000

skills/wgs84-to-j2000/README.md

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+# wgs84-to-j2000
+
+Convert WGS84 ECEF coordinates to J2000 ECI using exact inverse formula p1 equals R transpose at p2 and v1 equals R transpose at v2 plus omega cross p2 for centimeter level accuracy with Earth Orientation Parameters IAU 2000A precession nutation model support.
+
+## Installation
+
+```bash
+refly skill install skp-tue60rfgnuqgrdre9w0m1bwm
+```
+
+## Triggers
+
+- wgs84 to j2000
+- ecef to ecef
+- WGS84转J2000
+- inverse conversion
+- 逆坐标转换
+
+## Tags
+
+`orbital` `astronomy` `space` `gnss` `coordinate` `eop` `inverse` `precision`
+
+## Author
+
+jsy96
+
+## Links
+
+- [View on Refly](https://refly.ai/skill/skp-tue60rfgnuqgrdre9w0m1bwm)

skills/wgs84-to-j2000/SKILL.md

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+---
+name: wgs84-to-j2000
+description: Convert WGS84 ECEF coordinates to J2000 ECI using exact inverse formula p1 equals R transpose at p2 and v1 equals R transpose at v2 plus omega cross p2 for centimeter level accuracy with Earth Orientation Parameters IAU 2000A precession nutation model support.
+skillId: skp-tue60rfgnuqgrdre9w0m1bwm
+workflowId: see-workflow-mapping
+triggers:
+  - wgs84 to j2000
+  - ecef to ecef
+  - WGS84转J2000
+  - inverse conversion
+  - 逆坐标转换
+tags:
+  - orbital
+  - astronomy
+  - space
+  - gnss
+  - coordinate
+  - eop
+  - inverse
+  - precision
+version: 1.0.0
+---
+
+# wgs84-to-j2000
+
+Convert WGS84 ECEF coordinates to J2000 ECI using exact inverse formula p1 equals R transpose at p2 and v1 equals R transpose at v2 plus omega cross p2 for centimeter level accuracy with Earth Orientation Parameters IAU 2000A precession nutation model support.
+
+## Installation
+
+```bash
+refly skill install skp-tue60rfgnuqgrdre9w0m1bwm
+```
+
+## Usage
+
+After installation, run the skill using your installation ID:
+
+```bash
+refly skill run <installationId> --input '{}'
+```
+
+The installation ID is returned when you run `refly skill install`.