Add stewardship readiness asset: docs/ROADMAP.md

docs/ROADMAP.md

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+# Roadmap
+<!-- stewardship-standard: roadmap-v1 -->
+
+## Now
+
+- Confirm the project purpose in the README.
+- Confirm build, run, or flash instructions on a clean machine.
+- Classify license status and upstream provenance.
+- Close the stewardship readiness checklist issue.
+
+## Next
+
+- Add project-specific tests or verification steps.
+- Publish the first verified release only after provenance and security review.
+- Replace placeholder wiki notes with project-specific architecture or hardware details.
+
+## Later
+
+- Add examples, screenshots, wiring diagrams, or demo media where useful.
+- Decide whether duplicate or experimental branches should be archived.