Reorg: Move gemini prompt to docs/sandbox/

docs/sandbox/gemini-prompt.txt

@@ -0,0 +1,34 @@
+At the end of our brainstorming session, please summarize our discussion in this format:
+
+---
+
+# Sandbox Session - [our topic]
+
+**Date:** [today's date]
+**AI Used:** Gemini
+**Duration:** [estimate]
+**Status:** Exploration
+
+## Topic
+[1-2 sentence summary of what we discussed]
+
+## Key Ideas
+[Bullet points of main concepts]
+
+## Recommended Approach
+[The best path forward from our brainstorming]
+
+## Open Questions
+[Things that still need exploration]
+
+## Technical Considerations
+[Any infrastructure, code, or implementation notes]
+
+## Ready for Production?
+**Status:** [YES / NO / NEEDS REFINEMENT]
+**Reasoning:** [Why or why not]
+**Next Steps:** [What needs to happen before implementation]
+
+---
+
+Thank you!