Public Access
Records the decisions the milestone plan already made, with their costs stated rather than only their benefits: - 0001 e2ee-trust-model: key hierarchy, the AAD-to-row binding that stops the server moving ciphertext between rows, and the four-layer public-key trust story. States plainly that revocation is not retroactive, that Connect cannot be a security boundary, and that the IdP becomes a key-distribution trust root. - 0002 minimal-apis: feature modules with explicit registration; capability negotiation instead of Asp.Versioning, since client and server upgrade independently when self-hosted. - 0003 sync-protocol: single write path, revision cursors, and the bigserial pre-commit sequence gap that silently corrupts sync — plus the per-vault advisory lock that fixes it and the test that must prove it. - 0004 relay-authorization: relay forwards bytes rather than terminating SSH, so zero-knowledge survives; server-resolved target IPs in the ticket to defeat DNS rebinding; why host addresses must be plaintext when relay is enabled. - 0005 no-application-layer: why the usual Application/mediator layer earns nothing here, with the trigger that would make us revisit it. - 0006 observability-stack: OTel plus built-in ILogger; liveness excludes dependencies so a database blip cannot restart the container and kill live SSH sessions. Also adds a README covering layout, build, enforced conventions and milestones.