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omnigraph/docs/constants.md
Ragnor Comerford a61e82f47a
MR-794 step 2: docs — runs/invariants/architecture/execution + cleanup 
Refresh user-facing and agent-facing docs for the staged-write rewire
and clean up stale Run-state-machine references that survived MR-771.

MR-794-specific updates:
* docs/runs.md — remove "Known limitation: mid-query partial failure"
  section; document the in-memory accumulator + D₂ rule + the
  LoadMode::Overwrite residual.
* docs/invariants.md §VI.25 — flip from aspirational/open to
  upheld for inserts/updates. Within-query read-your-writes is now
  load-bearing for the publisher CAS contract.
* docs/architecture.md — add "Mutation atomicity — in-memory
  accumulator (MR-794)" subsection with per-op flow; refresh the
  engine + state diagrams to drop RunRegistry and add MutationStaging.
* docs/execution.md — rewrite the mutation flow sequence diagram
  for the staged-write path; updated the LoadMode table to call
  out per-mode commit semantics; rewrote load vs ingest.
* docs/query-language.md — document the D₂ parse-time rule.
* docs/errors.md — add the D₂ BadRequest rejection path.
* docs/testing.md — extend the runs.rs row to cover the new MR-794
  contract tests; add the staged_writes.rs row.
* docs/releases/v0.4.1.md (new) — release note covering the rewire,
  test additions, residuals, and files changed.
* AGENTS.md (CLAUDE.md symlink) — update the atomic-per-query
  description and the L2 capability matrix row.

Stale-reference cleanup (MR-771 leftovers):
* docs/storage.md — drop live _graph_runs.lance / _graph_run_actors.lance
  from the layout diagram and prose; mark legacy.
* docs/branches-commits.md — move __run__<id> to a legacy note;
  remove publish_run from the publish-trigger list.
* docs/audit.md — refresh _as API list (drop begin_run_as / publish_run_as);
  legacy RunRecord.actor_id moved to a historical note.
* docs/constants.md — mark run registry / branch-prefix rows as legacy.
* docs/cli.md — replace the legacy omnigraph run * quickstart block
  with omnigraph commit list/show.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
2026-05-01 10:43:19 +02:00

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Constants & Tunables (cheat sheet)

Name Value Where
MANIFEST_DIR __manifest db/manifest/layout.rs
Commit graph dir _graph_commits.lance db/commit_graph.rs
Run registry dir (legacy, removed MR-771) _graph_runs.lance inert post-v0.4.0; reclaimed by MR-770
Run branch prefix (legacy, removed MR-771) __run__ filtered by is_internal_run_branch defense-in-depth
Schema apply lock __schema_apply_lock__ db/mod.rs
Manifest publisher retry budget PUBLISHER_RETRY_BUDGET = 5 db/manifest/publisher.rs
Internal manifest schema version INTERNAL_MANIFEST_SCHEMA_VERSION = 2 db/manifest/migrations.rs
Merge stage batch MERGE_STAGE_BATCH_ROWS = 8192 exec/merge.rs
Maintenance concurrency OMNIGRAPH_MAINTENANCE_CONCURRENCY=8 db/omnigraph/optimize.rs
Graph index cache size 8 (LRU) runtime_cache.rs
Default body limit 1 MB omnigraph-server/lib.rs
Ingest body limit 32 MB omnigraph-server/lib.rs
Engine embed model gemini-embedding-2-preview omnigraph/embedding.rs
Compiler embed model text-embedding-3-small omnigraph-compiler/embedding.rs
Embed timeout 30 000 ms both clients
Embed retries 4 both clients
Embed retry backoff 200 ms both clients
LANCE memory pool default 1 GB (raised in v0.3.0) runtime