Bootstrap geth Rust workspace

docs/adr/0009-ssh-trust-and-ssh-proxy.md

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+# ADR 0009: SSH Trust And SSH Proxy
+
+## Status
+
+Accepted.
+
+## Decision
+
+SSH keys are admin signing identities and ecosystem integration points. SSH is
+not a geth transport. Future SSH proxy support will carry SSH protocol bytes over
+authorized Iroh streams, and OpenSSH will still perform normal login auth.
+
+## Consequences
+
+Knowing an Iroh EndpointID is insufficient to reach sshd. Geth authorization must
+allow `ssh_proxy.connect` before any SSH/admin endpoint is opened.