omnigraph/docs/dev/index.md
Andrew Altshuler 3e8f103804
docs(cluster): RFC-005 — server boots from cluster state (Phase 5 design) (#174)
The axiom-15 mode switch: omnigraph-server --cluster <dir> (mutually
exclusive with uri/--target/--config, zero omnigraph.yaml reads) serves the
APPLIED revision — graph set from state, query/policy content from the
content-addressed catalog at applied digests, cluster-scoped policy bundles
as the server-level Cedar engine. The load-bearing finding: state is not yet
serving-sufficient (policy applies_to bindings live only in cluster.yaml), so
slice 5A records binding metadata into the applied revision at apply time —
without it, boot-from-state silently becomes the merged read axiom 15
forbids. Fail-fast readiness table (missing state, pending sidecars, missing
blobs, unbound policies all refuse boot with remedies), the expose-all
mcp.expose bridge with its Phase 6 sunset, the operator migration path (exit
criterion 7), and 5A/5B/5C sequencing. The existing boot pipeline
(GraphStartupConfig -> registry -> routing/auth) is reused as-is — a new
source, not a new pipeline.

Co-authored-by: Claude Fable 5 <noreply@anthropic.com>
2026-06-10 15:22:12 +03:00

4.4 KiB

Developer Docs

Audience: contributors, maintainers, and coding agents

This is the contributor-facing entry point. These docs explain architecture, invariants, implementation contracts, test ownership, and upstream Lance constraints. User-facing behavior should still be documented through docs/user/index.md and the relevant public reference docs.

Required For Every Non-Trivial Change

Need Read
Architectural rules, known gaps, deny-list invariants.md
Upstream Lance source-of-truth index lance.md
Existing test coverage and test placement testing.md

Architecture And Storage

Area Read
System structure, L1/L2 framing, component diagrams architecture.md
On-disk layout, manifest schema, URI behavior storage.md
Direct-publish writes, D2, staged writes, recovery sidecars writes.md
Query execution, mutation execution, loader flow execution.md
Index lifecycle and graph topology indexes indexes.md
Branch and commit internals branches-commits.md
Three-way merge implementation and conflicts merge.md
Diff/change-feed implementation changes.md
Branch protection policy branch-protection.md
CODEOWNERS source of truth codeowners.md

Language, Runtime, And Boundaries

Area Read
Schema grammar, catalog, migration planner schema-language.md
Query grammar, IR, lints, mutation restrictions query-language.md
Embedding client and @embed integration embeddings.md
Cedar policy surface and server gating policy.md
Server auth, OpenAPI, endpoint handlers server.md
Error taxonomy and serialization errors.md
Constants and tunables constants.md
Transaction model public contract transactions.md

Project Operations

Area Read
CI and release workflows ci.md
Install and deployment packaging install.md, deployment.md
Release history releases/

Contribution & Governance

Area Read
How to contribute (external) CONTRIBUTING.md
Governance model, roles, decision authority GOVERNANCE.md
Public contribution RFC track rfcs/

The docs/rfcs/ track is the public, externally-authorable RFC process. The maintainer/internal RFCs below (rfc-00N-*.md) are a separate, team-owned track; don't conflate the two.

Active Implementation Plans

Working documents for in-flight feature work. Removed when the work lands.

Area Read
Schema-lint chassis v1 (MR-694) — --allow-data-loss, soft/hard drops schema-lint-v1-plan.md
Inline + stored queries, request/response envelope, MCP (MR-656 / MR-976 / MR-969) rfc-001-queries-envelope-mcp.md
Config & CLI architecture — layered config, client targeting, file naming (MR-973 / MR-974 / MR-981) rfc-002-config-cli-architecture.md
MCP server surface — full tool parity, stored queries, modular auth (MR-969 / MR-956 / MR-974) rfc-003-mcp-server-surface.md
Future cluster control plane — declarative as-code config, JSON state ledger, reconciler cluster-config-specs.md, cluster-axioms.md, cluster-config-implementation-spec.md
Cluster graph & schema apply — Phase 4 sidecars, roll-forward recovery, approval artifacts rfc-004-cluster-graph-schema-apply.md
Server boots from cluster state — Phase 5 mode switch, applied-revision serving rfc-005-server-cluster-boot.md

Boundary

Developer docs may mention implementation details, stale gaps, upstream Lance blockers, and review rules. User docs should not require that context unless the detail changes the public contract.