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omnigraph/docs/constants.md

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Refactor AGENTS.md from encyclopedia to map; move spec into docs/ Splits the 990-line AGENTS.md into a 184-line map (architecture, where-to-find index, always-on invariants, capability matrix, maintenance contract) plus 18 new docs/*.md files holding the deep content per topic (storage, schema and query languages, indexes, embeddings, branches/commits, runs, merge, changes, execution, policy, server, CLI reference, audit, errors, CI, constants, v0.3.1 notes). Adds scripts/check-agents-md.sh and a check_agents_md CI job that verifies every docs/ link in AGENTS.md resolves and every doc in the canonical set is linked. CLAUDE.md remains a symlink to AGENTS.md. Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
2026-04-28 23:31:08 +02:00
# Constants & Tunables (cheat sheet)
| Name | Value | Where |
|---|---|---|
| `MANIFEST_DIR` | `__manifest` | `db/manifest/layout.rs` |
| Commit graph dir | `_graph_commits.lance` | `db/commit_graph.rs` |
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
| 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 |
Refactor AGENTS.md from encyclopedia to map; move spec into docs/ Splits the 990-line AGENTS.md into a 184-line map (architecture, where-to-find index, always-on invariants, capability matrix, maintenance contract) plus 18 new docs/*.md files holding the deep content per topic (storage, schema and query languages, indexes, embeddings, branches/commits, runs, merge, changes, execution, policy, server, CLI reference, audit, errors, CI, constants, v0.3.1 notes). Adds scripts/check-agents-md.sh and a check_agents_md CI job that verifies every docs/ link in AGENTS.md resolves and every doc in the canonical set is linked. CLAUDE.md remains a symlink to AGENTS.md. Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
2026-04-28 23:31:08 +02:00
| Schema apply lock | `__schema_apply_lock__` | `db/mod.rs` |
docs: surface MR-766 publisher OCC in storage / errors / constants - storage.md: document the row-level CAS annotation on `__manifest.object_id` and the `expected_table_versions` OCC contract on `ManifestBatchPublisher::publish`. - errors.md: list `ManifestConflictDetails` and its variants alongside `ManifestError`. - constants.md: add `PUBLISHER_RETRY_BUDGET = 5`. Per AGENTS.md "Maintenance contract": new schema construct, new constant, and new typed error shape all need to ship with the source change.
2026-04-29 07:56:18 +00:00
| Manifest publisher retry budget | `PUBLISHER_RETRY_BUDGET = 5` | `db/manifest/publisher.rs` |
Add internal-schema versioning + auto-migration for __manifest The on-disk shape of `__manifest` is reconciled with the binary via a single stamp + dispatcher in `db/manifest/migrations.rs`: - `INTERNAL_MANIFEST_SCHEMA_VERSION = 2` declares the shape this binary writes. - The on-disk stamp `omnigraph:internal_schema_version` lives in the manifest dataset's schema-level metadata (Lance `update_schema_metadata`). - `migrate_internal_schema(&mut dataset)` walks `match`-arm steps forward from the on-disk stamp until it matches the binary, then returns. Idempotent. - `init_manifest_repo` stamps the current version at creation; the publisher's open-for-write path runs pending migrations before reading state. Reads stay side-effect-free. - Forward-version protection: a stamp higher than the binary's known version triggers a clear "upgrade omnigraph first" error so an old binary cannot clobber a newer schema. Self-heals existing pre-MR-766 deployments by auto-applying the v1→v2 step: the `lance-schema:unenforced-primary-key` annotation on `__manifest.object_id` that engages Lance's row-level CAS at commit time. New repos created via `init` are stamped at v2 immediately and don't need migration. Adding a future on-disk shape change is one constant bump, one match arm in `migrate_internal_schema`, and one test — no new branches in unrelated code paths. Code outside the migration module never inspects the stamp. New tests in `manifest/tests.rs`: - `test_init_stamps_internal_schema_version` - `test_publish_migrates_pre_stamp_manifest_to_current_version` - `test_publish_rejects_manifest_stamped_at_future_version` Docs: `docs/storage.md`, `docs/maintenance.md`, `docs/constants.md` updated per the AGENTS.md maintenance contract.
2026-04-29 11:44:14 +00:00
| Internal manifest schema version | `INTERNAL_MANIFEST_SCHEMA_VERSION = 2` | `db/manifest/migrations.rs` |
Refactor AGENTS.md from encyclopedia to map; move spec into docs/ Splits the 990-line AGENTS.md into a 184-line map (architecture, where-to-find index, always-on invariants, capability matrix, maintenance contract) plus 18 new docs/*.md files holding the deep content per topic (storage, schema and query languages, indexes, embeddings, branches/commits, runs, merge, changes, execution, policy, server, CLI reference, audit, errors, CI, constants, v0.3.1 notes). Adds scripts/check-agents-md.sh and a check_agents_md CI job that verifies every docs/ link in AGENTS.md resolves and every doc in the canonical set is linked. CLAUDE.md remains a symlink to AGENTS.md. Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
2026-04-28 23:31:08 +02:00
| 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 |
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