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18 documents

Document	Status	Editors	Updated
Q3 Platform Architecture /architecture/q3-platform	In review	NA	12m ago	⋯
CRDT Convergence Model /architecture/crdt-convergence	Published	JL MK	2h ago	⋯
Audit Log & Replay Spec /architecture/audit-replay	Published	NA JL	5h ago	⋯
Permission Enforcement Floor /architecture/permission-floor	Draft	MK	Yesterday	⋯
Snapshot Retention Policy /architecture/snapshot-retention	In review	NA	2d ago	⋯
Tenant Isolation Threat Model /architecture/tenant-isolation	Published	JL	4d ago	⋯

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Engineering / Architecture / Q3 Platform Architecture

v12 · published

Engineering · Architecture

Q3 Platform Architecture

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Nomi Ali

author · human

Atlas

co-editor · agent

Updated 12 min ago

·

9 min read

·

v12

editorzero treats humans and AI agents as peer co-editors. This document captures the architecture that makes that parity real across the API, CLI, MCP, and Web surfaces — every capability available to a person is equally available to an agent, under the same permission floor.

The unified write path

All content mutations flow through a single transactional path, ctx.transact(doc_id, fn). There is no second authority that can silently overwrite an edit — the failure class behind most split-brain collaboration bugs. Every mutation produces exactly one audit entry, and the audit log alone can reconstruct the document's final state.

Determinism is a feature. Doc-model changes must preserve CRDT convergence and per-block Markdown fidelity. Concurrent edits from a human and an agent converge to the same state across every replica.

Tracked agent edits

An agent's edit can be recorded as a suggestion attributed to the agent principal, reviewable and acceptable by a human or another authorised agent. Suggestions are anchored on Yjs relative positions, so they survive concurrent edits to the surrounding text rather than landing at the wrong offset.

Suggestion anchors use relative positions, never absolute offsets.
Accept and reject are conflict-aware capabilities — a stale anchor is surfaced as outdated, never silently applied.
Restore appends a converging state; it never rewinds the CRDT in place.

The killer feature is owned, free, and self-hostable — no Pro gate, no unshipped upstream dependency.

Version history

Versions are named Yjs snapshots, dispatcher-mediated, each with author attribution and one audit entry. Restoring a version computes the delta against current state and applies it as a new corrective update:

typescript// restore appends, never rewinds
const delta = diff(current, snapshot.stateVector);
await ctx.transact(docId, (d) => d.applyUpdate(delta));

Because snapshots and changesets are computed over the CRDT rather than in place of it, the CRDT remains the single source of truth at all times.

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Atlas is editing

Q3 Platform Architecture

DRAFT v12·last edit 12s ago·2 open suggestions

The unified write path

All content mutations flow through a single transactional path. There is no second authority that can silently overwrite an editJonas — the failure class behind most split-brain collaboration bugs.

Every mutation produces exactly one a single audit entry, and the audit log alone can reconstruct the document's final state.Atlas

Atlas agent · suggestion just now

Replace “a single” with “exactly one” to match the invariant wording.

Invariant 3 in the brief says “exactly one audit entry.” Aligning the prose with the canonical phrasing.

anchored · rel-pos · audit on accept

Versions are named Yjs snapshots, each with author attribution and one audit entry.

Scout outdated 23m ago

Suggested adding a sentence about auto-snapshot cadence — but the anchored range was edited concurrently, so this suggestion no longer resolves.

Anchor moved under a concurrent edit — surfaced as outdated, never silently applied.

⚠ anchor unresolved

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Acme Robotics · 14 people, 3 agents · managed by this self-hosted workspace

Member	Type	Role	Teams	Last active
NA Nomi Ali nomi@acme.dev	human	Admin	EngProduct	now	⋯
Atlas claude-opus agent:atlas · tok ••••7f3a	agent	Editor	Engscoped · rate-limited	editing now	⋯
JL Jonas Lindberg jonas@acme.dev	human	Editor	EngDesign	2m ago	⋯
Scout changelog-bot agent:scout · tok ••••c1d9	agent	Editor	Engscoped	2h ago	⋯
MK Maja Kowalski maja@acme.dev	human	Editor	Design	1h ago	⋯
Indexer search-sync agent:indexer · tok ••••9b02	agent	Viewer	All spacesread-only	5m ago	⋯