add template (#203)

Co-authored-by: Devon <[email protected]>

Author: cassieemb

.github/ISSUE_TEMPLATE/prime_documentation_handoff.md

@@ -0,0 +1,53 @@
+---
+name: API Documentation Handoff from Prime to DevEx
+about: Formal handoff from the Prime team to DevEx for finalizing and publishing API documentation updates.
+title: "[Prime Documentation Handoff] <Short Description of Change>"
+labels: team/developer-experience, area/rest-api, status/needs-triage
+assignees: ''
+
+---
+
+## Ticket & PR References
+- **Internal Ticket:** references [ticket]
+- **API PR:** references [open PR]
+
+---
+
+## Background
+
+**Summary of Change:**  
+Briefly explain what was added, changed, or removed in the API and why.
+
+**Deployment Timing:**  
+When are the changes expected to go live?
+
+**Breaking Change:**  
+Is this a breaking change? If so, what is the impact and how should it be communicated?
+
+---
+
+## Handoff Checklist
+
+- [ ] API changes have been reviewed and approved by the Prime team.
+- [ ] TypeSpec/documentation builds successfully.
+- [ ] Preview looks correct and matches expectations.
+
+<details>
+<summary>Additional context (if any of the above items are unchecked)</summary>
+
+<!-- Add details here if there are known issues, blockers, or questions related to the docs. -->
+
+</details>
+
+---
+
+## Next Steps
+
+- [ ] Prime will monitor this ticket for any follow-up questions or issues.
+- [ ] DevEx can proceed with documentation adjustments, merging, and publishing when ready.
+
+<!-- Add any relevant context or expectations around timing, testing, or coordination. 
+If documentation should not be merged immediately — for example, if it depends on a specific deployment date or another task being completed first — please include those details here. -->
+
+
+