Documentation snapshot 0.1

Status: current development baseline Code line: main / planned v0.1.x API major: v1 Identity: integer IDs (ADR-0002) Migration baseline: consolidated first-release schema (ADR-0004)

This snapshot includes the Go service mesh, React federation shell, spec-first API, PostgreSQL schema ownership, Redis Streams, health/observability controls, and the documentation/governance baseline. Upgrade instructions begin in UPGRADING.md; the complete immutable snapshot is the eventual v0.1.x Git tag.