# Sprint 185 - Replay Core · 185.A) Shared Replay Primitives

[Replay Core] 185.A) Shared Replay Primitives  
Depends on: Sprint 160 Export & Evidence  
Summary: Stand up a shared replay library, hashing/cononicalisation helpers, and baseline documentation for deterministic bundles.

Task ID | State | Task description | Owners (Source)
--- | --- | --- | ---
REPLAY-CORE-185-001 | TODO | Scaffold `StellaOps.Replay.Core` with manifest schema types, canonical JSON rules, Merkle utilities, and DSSE payload builders; add `AGENTS.md`/`TASKS.md` for the new library; cross-reference `docs/replay/DETERMINISTIC_REPLAY.md` section 3 when updating the library charter. | BE-Base Platform Guild (`src/__Libraries/StellaOps.Replay.Core`)
REPLAY-CORE-185-002 | TODO | Implement deterministic bundle writer (tar.zst, CAS naming) and hashing abstractions, updating `docs/modules/platform/architecture-overview.md` with a “Replay CAS” subsection that documents layout/retention expectations. | Platform Guild (src/__Libraries/StellaOps.Replay.Core)
REPLAY-CORE-185-003 | TODO | Define Mongo collections (`replay_runs`, `replay_bundles`, `replay_subjects`) and indices, then author `docs/data/replay_schema.md` detailing schema fields, constraints, and offline sync strategy. | Platform Data Guild (src/__Libraries/StellaOps.Replay.Core)
DOCS-REPLAY-185-003 | TODO | Author `docs/data/replay_schema.md` detailing `replay_runs`, `replay_bundles`, `replay_subjects` collections, index guidance, and offline sync strategy aligned with Replay CAS. | Docs Guild, Platform Data Guild (docs)
DOCS-REPLAY-185-004 | TODO | Expand `docs/replay/DEVS_GUIDE_REPLAY.md` with integration guidance for consuming services (Scanner, Evidence Locker, CLI) and add checklist derived from `docs/replay/DETERMINISTIC_REPLAY.md` Section 11. | Docs Guild (docs)

> 2025-11-03: Replay CAS section published in `docs/modules/platform/architecture-overview.md` §5 — owners can move REPLAY-CORE-185-001/002 to **DOING** once library scaffolding begins.