docs: initialize stewardship wiki

Home.md

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+# jammerremix Wiki
+
+## Stewardship Status
+
+This wiki was initialized during the 2026-05-20 stewardship pass.
+
+- Repo was empty before README initialization.
+- Restrict work to lawful, authorized, shielded test environments.
+- Do not publish credentials, private captures, keys, or live target data.
+
+## Next Steps
+
+Document exact hardware, firmware source, build process, safety limits, license, and release artifact policy before uploading project files.