Architecture decisions

Accepted ADRs are immutable records. A later decision supersedes an earlier record rather than rewriting its historical context.

1. Dual license and contract versioning (licensing superseded by ADR 0017)
2. Direct Arrow for the initial Xatu reader
3. Verified Beacon API finality
4. Direct Reth P2P boundary
5. SQLite transaction overlay
6. Durable bounded historical runtime
7. Native runtime first; Firehose at the edge
8. Native API as the v1 integration boundary
9. Native consensus P2P finality
10. Persistent P2P and late archive reconciliation
11. Process-wide execution P2P manager
12. Two-tier execution peer startup
13. SQLite execution peer store
14. Opportunistic execution peer qualification
15. Single-owner execution Discv4
16. Requested coverage in output snapshots
17. MIT license

The links use the documentation build ref: previews point to main, while production docs point to the exact release tag carried by site-production.