Bootstrap geth Rust workspace

docs/adr/0010-crsqlite-db-sync.md

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+# ADR 0010: cr-sqlite DB Sync
+
+## Status
+
+Accepted.
+
+## Decision
+
+Database sync will use local SQLite databases with cr-sqlite. Changes from
+`crsql_changes` will be exchanged over Iroh and applied through cr-sqlite, with
+schema hash gating and resource authorization.
+
+## Consequences
+
+The MVP stores DB resource metadata and leaves synchronization as explicit future
+work.